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  • Trouble connecting a Ubuntu system to IPv6 tunnel over NAT

    - by John Millikin
    I'm trying to set up an IPv6 tunnel, via Hurricane Electric's tunnel-broker service. I've configured my system using their example commands: # $ipv4a = tunnel server's IPv4 IP # $ipv4b = user's IPv4 IP # $ipv6a = tunnel server's side of point-to-point /64 allocation # $ipv6b = user's side of point-to-point /64 allocation ip tunnel add he-ipv6 mode sit remote $ipv4a local $ipv4b ttl 255 ip link set he-ipv6 up ip addr add $ipv6b dev he-ipv6 ip route add ::/0 dev he-ipv6 And have configured my desktop to be in my NAT router's DMZ. The router is running Tomato firmware. But I can't ping any IPv6 services: $ ping6 -I he-ipv6 '2001:470:1f04:454::1' PING 2001:470:1f04:454::1(2001:470:1f04:454::1) from 2001:470:1f04:454::2 he-ipv6: 56 data bytes From 2001:470:1f04:454::2 icmp_seq=1 Destination unreachable: Address unreachable From 2001:470:1f04:454::2 icmp_seq=2 Destination unreachable: Address unreachable I can ping my local address: $ ping6 -I he-ipv6 '2001:470:1f04:454::2' PING 2001:470:1f04:454::2(2001:470:1f04:454::2) from 2001:470:1f04:454::2 he-ipv6: 56 data bytes 64 bytes from 2001:470:1f04:454::2: icmp_seq=1 ttl=64 time=0.037 ms 64 bytes from 2001:470:1f04:454::2: icmp_seq=2 ttl=64 time=0.039 ms I don't know much about routing, but results I found online suggested the output of ip -6 route and ip addr could be useful: $ ip -6 route 2001:470:1f04:454::/64 via :: dev he-ipv6 proto kernel metric 256 mtu 1480 advmss 1420 hoplimit 4294967295 fe80::/64 dev virbr0 proto kernel metric 256 mtu 1500 advmss 1440 hoplimit 4294967295 fe80::/64 dev eth1 proto kernel metric 256 mtu 1500 advmss 1440 hoplimit 4294967295 fe80::/64 via :: dev he-ipv6 proto kernel metric 256 mtu 1480 advmss 1420 hoplimit 4294967295 default dev he-ipv6 metric 1024 mtu 1480 advmss 1420 hoplimit 4294967295 $ ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 100 link/ether 00:1c:c0:a1:98:b2 brd ff:ff:ff:ff:ff:ff inet 192.168.1.10/24 brd 192.168.1.255 scope global eth1 inet6 fe80::21c:c0ff:fea1:98b2/64 scope link valid_lft forever preferred_lft forever 3: virbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN link/ether 36:4c:33:ab:0d:c6 brd ff:ff:ff:ff:ff:ff inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0 inet6 fe80::344c:33ff:feab:dc6/64 scope link valid_lft forever preferred_lft forever 4: vboxnet0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000 link/ether 00:76:62:6e:65:74 brd ff:ff:ff:ff:ff:ff 5: pan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN link/ether 7e:29:5e:7c:ba:93 brd ff:ff:ff:ff:ff:ff 6: sit0: <NOARP> mtu 1480 qdisc noop state DOWN link/sit 0.0.0.0 brd 0.0.0.0 7: he-ipv6@NONE: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1480 qdisc noqueue state UNKNOWN link/sit 24.130.225.239 peer 72.52.104.74 inet6 2001:470:1f04:454::2/64 scope global valid_lft forever preferred_lft forever inet6 fe80::1882:e1ef/128 scope link valid_lft forever preferred_lft forever

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  • iptables syn flood countermeasure

    - by Penegal
    I'm trying to adjust my iptables firewall to increase the security of my server, and I found something a bit problematic here : I have to set INPUT policy to ACCEPT and, in addition, to have a rule saying iptables -I INPUT -i eth0 -j ACCEPT. Here comes my script (launched manually for tests) : #!/bin/sh IPT=/sbin/iptables echo "Clearing firewall rules" $IPT -F $IPT -Z $IPT -t nat -F $IPT -t nat -Z $IPT -t mangle -F $IPT -t mangle -Z $IPT -X echo "Defining logging policy for dropped packets" $IPT -N LOGDROP $IPT -A LOGDROP -j LOG -m limit --limit 5/min --log-level debug --log-prefix "iptables rejected: " $IPT -A LOGDROP -j DROP echo "Setting firewall policy" $IPT -P INPUT DROP # Deny all incoming connections $IPT -P OUTPUT ACCEPT # Allow all outgoing connections $IPT -P FORWARD DROP # Deny all forwaring echo "Allowing connections from/to lo and incoming connections from eth0" $IPT -I INPUT -i lo -j ACCEPT $IPT -I OUTPUT -o lo -j ACCEPT #$IPT -I INPUT -i eth0 -j ACCEPT echo "Setting SYN flood countermeasures" $IPT -A INPUT -p tcp -i eth0 --syn -m limit --limit 100/second --limit-burst 200 -j LOGDROP echo "Allowing outgoing traffic corresponding to already initiated connections" $IPT -A OUTPUT -p ALL -m state --state ESTABLISHED,RELATED -j ACCEPT echo "Allowing incoming SSH" $IPT -A INPUT -p tcp --dport 22 -m state --state NEW -m recent --set --name SSH -j ACCEPT echo "Setting SSH bruteforce attacks countermeasures (deny more than 10 connections every 10 minutes)" $IPT -A INPUT -p tcp --dport 22 -m recent --update --seconds 600 --hitcount 10 --rttl --name SSH -j LOGDROP echo "Allowing incoming traffic for HTTP, SMTP, NTP, PgSQL and SolR" $IPT -A INPUT -p tcp --dport 25 -i eth0 -j ACCEPT $IPT -A INPUT -p tcp --dport 80 -i eth0 -j ACCEPT $IPT -A INPUT -p udp --dport 123 -i eth0 -j ACCEPT $IPT -A INPUT -p tcp --dport 5433 -i eth0.2654 -s 172.16.0.2 -j ACCEPT $IPT -A INPUT -p udp --dport 5433 -i eth0.2654 -s 172.16.0.2 -j ACCEPT $IPT -A INPUT -p tcp --dport 8983 -i eth0.2654 -s 172.16.0.2 -j ACCEPT $IPT -A INPUT -p udp --dport 8983 -i eth0.2654 -s 172.16.0.2 -j ACCEPT echo "Allowing outgoing traffic for ICMP, SSH, whois, SMTP, DNS, HTTP, PgSQL and SolR" $IPT -A OUTPUT -p tcp --dport 22 -j ACCEPT $IPT -A OUTPUT -p tcp --dport 25 -o eth0 -j ACCEPT $IPT -A OUTPUT -p tcp --dport 43 -o eth0 -j ACCEPT $IPT -A OUTPUT -p tcp --dport 53 -o eth0 -j ACCEPT $IPT -A OUTPUT -p udp --dport 53 -o eth0 -j ACCEPT $IPT -A OUTPUT -p tcp --dport 80 -o eth0 -j ACCEPT $IPT -A OUTPUT -p udp --dport 80 -o eth0 -j ACCEPT #$IPT -A OUTPUT -p tcp --dport 5433 -o eth0 -d 176.31.236.101 -j ACCEPT #$IPT -A OUTPUT -p udp --dport 5433 -o eth0 -d 176.31.236.101 -j ACCEPT #$IPT -A OUTPUT -p tcp --dport 8983 -o eth0 -d 176.31.236.101 -j ACCEPT #$IPT -A OUTPUT -p udp --dport 8983 -o eth0 -d 176.31.236.101 -j ACCEPT $IPT -A OUTPUT -p tcp --sport 5433 -o eth0.2654 -j ACCEPT $IPT -A OUTPUT -p udp --sport 5433 -o eth0.2654 -j ACCEPT $IPT -A OUTPUT -p tcp --sport 8983 -o eth0.2654 -j ACCEPT $IPT -A OUTPUT -p udp --sport 8983 -o eth0.2654 -j ACCEPT $IPT -A OUTPUT -p icmp -j ACCEPT echo "Allowing outgoing FTP backup" $IPT -A OUTPUT -p tcp --dport 20:21 -o eth0 -d 91.121.190.78 -j ACCEPT echo "Dropping and logging everything else" $IPT -A INPUT -s 0/0 -j LOGDROP $IPT -A OUTPUT -j LOGDROP $IPT -A FORWARD -j LOGDROP echo "Firewall loaded." echo "Maintaining new rules for 3 minutes for tests" sleep 180 $IPT -nvL echo "Clearing firewall rules" $IPT -F $IPT -Z $IPT -t nat -F $IPT -t nat -Z $IPT -t mangle -F $IPT -t mangle -Z $IPT -X $IPT -P INPUT ACCEPT $IPT -P OUTPUT ACCEPT $IPT -P FORWARD ACCEPT When I launch this script (I only have a SSH access), the shell displays every message up to Maintaining new rules for 3 minutes for tests, the server is unresponsive during the 3 minutes delay and then resume normal operations. The only solution I found until now was to set $IPT -P INPUT ACCEPT and $IPT -I INPUT -i eth0 -j ACCEPT, but this configuration does not protect me of any attack, which is a great shame for a firewall. I suspect that the error comes from my script and not from iptables, but I don't understand what's wrong with my script. Could some do-gooder explain me my error, please? EDIT: here comes the result of iptables -nvL with the "accept all input" ($IPT -P INPUT ACCEPT and $IPT -I INPUT -i eth0 -j ACCEPT) solution : Chain INPUT (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 1 52 ACCEPT all -- eth0 * 0.0.0.0/0 0.0.0.0/0 0 0 ACCEPT all -- lo * 0.0.0.0/0 0.0.0.0/0 0 0 LOGDROP tcp -- eth0 * 0.0.0.0/0 0.0.0.0/0 tcp flags:0x17/0x02 limit: avg 100/sec burst 200 0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 state NEW recent: SET name: SSH side: source 0 0 LOGDROP tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 recent: UPDATE seconds: 600 hit_count: 10 TTL-Match name: SSH side: source 0 0 ACCEPT tcp -- eth0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:25 0 0 ACCEPT tcp -- eth0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 0 0 ACCEPT udp -- eth0 * 0.0.0.0/0 0.0.0.0/0 udp dpt:123 0 0 ACCEPT tcp -- eth0.2654 * 172.16.0.2 0.0.0.0/0 tcp dpt:5433 0 0 ACCEPT udp -- eth0.2654 * 172.16.0.2 0.0.0.0/0 udp dpt:5433 0 0 ACCEPT tcp -- eth0.2654 * 172.16.0.2 0.0.0.0/0 tcp dpt:8983 0 0 ACCEPT udp -- eth0.2654 * 172.16.0.2 0.0.0.0/0 udp dpt:8983 0 0 LOGDROP all -- * * 0.0.0.0/0 0.0.0.0/0 Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 0 0 LOGDROP all -- * * 0.0.0.0/0 0.0.0.0/0 Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 0 0 ACCEPT all -- * lo 0.0.0.0/0 0.0.0.0/0 2 728 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED 0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 0 0 ACCEPT tcp -- * eth0 0.0.0.0/0 0.0.0.0/0 tcp dpt:25 0 0 ACCEPT tcp -- * eth0 0.0.0.0/0 0.0.0.0/0 tcp dpt:43 0 0 ACCEPT tcp -- * eth0 0.0.0.0/0 0.0.0.0/0 tcp dpt:53 0 0 ACCEPT udp -- * eth0 0.0.0.0/0 0.0.0.0/0 udp dpt:53 0 0 ACCEPT tcp -- * eth0 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 0 0 ACCEPT udp -- * eth0 0.0.0.0/0 0.0.0.0/0 udp dpt:80 0 0 ACCEPT tcp -- * eth0.2654 0.0.0.0/0 0.0.0.0/0 tcp spt:5433 0 0 ACCEPT udp -- * eth0.2654 0.0.0.0/0 0.0.0.0/0 udp spt:5433 0 0 ACCEPT tcp -- * eth0.2654 0.0.0.0/0 0.0.0.0/0 tcp spt:8983 0 0 ACCEPT udp -- * eth0.2654 0.0.0.0/0 0.0.0.0/0 udp spt:8983 0 0 ACCEPT icmp -- * * 0.0.0.0/0 0.0.0.0/0 0 0 ACCEPT tcp -- * eth0 0.0.0.0/0 91.121.190.78 tcp dpts:20:21 0 0 LOGDROP all -- * * 0.0.0.0/0 0.0.0.0/0 Chain LOGDROP (5 references) pkts bytes target prot opt in out source destination 0 0 LOG all -- * * 0.0.0.0/0 0.0.0.0/0 limit: avg 5/min burst 5 LOG flags 0 level 7 prefix `iptables rejected: ' 0 0 DROP all -- * * 0.0.0.0/0 0.0.0.0/0 EDIT #2 : I modified my script (policy ACCEPT, defining authorized incoming packets then logging and dropping everything else) to write iptables -nvL results to a file and to allow only 10 ICMP requests per second, logging and dropping everything else. The result proved unexpected : while the server was unavailable to SSH connections, even already established, I ping-flooded it from another server, and the ping rate was restricted to 10 requests per second. During this test, I also tried to open new SSH connections, which remained unanswered until the script flushed rules. Here comes the iptables stats written after these tests : Chain INPUT (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 600 35520 ACCEPT all -- lo * 0.0.0.0/0 0.0.0.0/0 6 360 LOGDROP tcp -- eth0 * 0.0.0.0/0 0.0.0.0/0 tcp flags:0x17/0x02 limit: avg 100/sec burst 200 0 0 LOGDROP tcp -- eth0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 STRING match "w00tw00t.at.ISC.SANS." ALGO name bm TO 65535 0 0 LOGDROP tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 STRING match "Host: anoticiapb.com.br" ALGO name bm TO 65535 0 0 LOGDROP tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 STRING match "Host: www.anoticiapb.com.br" ALGO name bm TO 65535 105 8820 ACCEPT icmp -- * * 0.0.0.0/0 0.0.0.0/0 limit: avg 10/sec burst 5 830 69720 LOGDROP icmp -- * * 0.0.0.0/0 0.0.0.0/0 0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 state NEW recent: SET name: SSH side: source 0 0 LOGDROP tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 recent: UPDATE seconds: 600 hit_count: 10 TTL-Match name: SSH side: source 0 0 ACCEPT tcp -- eth0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:25 0 0 ACCEPT tcp -- eth0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 0 0 ACCEPT udp -- eth0 * 0.0.0.0/0 0.0.0.0/0 udp dpt:80 0 0 ACCEPT udp -- eth0 * 0.0.0.0/0 0.0.0.0/0 udp dpt:123 0 0 ACCEPT tcp -- eth0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:443 0 0 ACCEPT tcp -- eth0.2654 * 172.16.0.1 0.0.0.0/0 tcp spt:5433 0 0 ACCEPT udp -- eth0.2654 * 172.16.0.1 0.0.0.0/0 udp spt:5433 0 0 ACCEPT tcp -- eth0.2654 * 172.16.0.1 0.0.0.0/0 tcp spt:8983 0 0 ACCEPT udp -- eth0.2654 * 172.16.0.1 0.0.0.0/0 udp spt:8983 16 1684 LOGDROP all -- * * 0.0.0.0/0 0.0.0.0/0 Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 0 0 LOGDROP all -- * * 0.0.0.0/0 0.0.0.0/0 Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 600 35520 ACCEPT all -- * lo 0.0.0.0/0 0.0.0.0/0 0 0 LOGDROP tcp -- * eth0 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 owner UID match 33 0 0 LOGDROP udp -- * eth0 0.0.0.0/0 0.0.0.0/0 udp dpt:80 owner UID match 33 116 11136 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED 0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 0 0 ACCEPT tcp -- * eth0 0.0.0.0/0 0.0.0.0/0 tcp dpt:25 0 0 ACCEPT tcp -- * eth0 0.0.0.0/0 0.0.0.0/0 tcp dpt:53 0 0 ACCEPT udp -- * eth0 0.0.0.0/0 0.0.0.0/0 udp dpt:53 0 0 ACCEPT tcp -- * eth0 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 0 0 ACCEPT udp -- * eth0 0.0.0.0/0 0.0.0.0/0 udp dpt:80 0 0 ACCEPT tcp -- * eth0.2654 0.0.0.0/0 0.0.0.0/0 tcp dpt:5433 0 0 ACCEPT udp -- * eth0.2654 0.0.0.0/0 0.0.0.0/0 udp dpt:5433 0 0 ACCEPT tcp -- * eth0.2654 0.0.0.0/0 0.0.0.0/0 tcp dpt:8983 0 0 ACCEPT udp -- * eth0.2654 0.0.0.0/0 0.0.0.0/0 udp dpt:8983 0 0 ACCEPT icmp -- * * 0.0.0.0/0 0.0.0.0/0 0 0 ACCEPT tcp -- * eth0 0.0.0.0/0 0.0.0.0/0 tcp dpt:43 0 0 ACCEPT tcp -- * eth0 0.0.0.0/0 91.121.190.18 tcp dpts:20:21 7 1249 LOGDROP all -- * * 0.0.0.0/0 0.0.0.0/0 Chain LOGDROP (11 references) pkts bytes target prot opt in out source destination 35 3156 LOG all -- * * 0.0.0.0/0 0.0.0.0/0 limit: avg 1/sec burst 5 LOG flags 0 level 7 prefix `iptables rejected: ' 859 73013 DROP all -- * * 0.0.0.0/0 0.0.0.0/0 Here comes the log content added during this test : Mar 28 09:52:51 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=52 TOS=0x00 PREC=0x00 TTL=51 ID=55666 DF PROTO=TCP SPT=57504 DPT=22 WINDOW=501 RES=0x00 ACK URGP=0 Mar 28 09:52:51 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=52 TOS=0x00 PREC=0x00 TTL=51 ID=55667 DF PROTO=TCP SPT=57504 DPT=22 WINDOW=501 RES=0x00 ACK URGP=0 Mar 28 09:52:51 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=64 TOS=0x00 PREC=0x00 TTL=51 ID=55668 DF PROTO=TCP SPT=57504 DPT=22 WINDOW=501 RES=0x00 ACK URGP=0 Mar 28 09:52:51 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=64 TOS=0x00 PREC=0x00 TTL=51 ID=55669 DF PROTO=TCP SPT=57504 DPT=22 WINDOW=501 RES=0x00 ACK URGP=0 Mar 28 09:52:52 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=64 TOS=0x00 PREC=0x00 TTL=51 ID=55670 DF PROTO=TCP SPT=57504 DPT=22 WINDOW=501 RES=0x00 ACK URGP=0 Mar 28 09:52:54 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=64 TOS=0x00 PREC=0x00 TTL=51 ID=55671 DF PROTO=TCP SPT=57504 DPT=22 WINDOW=501 RES=0x00 ACK URGP=0 Mar 28 09:52:58 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=64 TOS=0x00 PREC=0x00 TTL=51 ID=55672 DF PROTO=TCP SPT=57504 DPT=22 WINDOW=501 RES=0x00 ACK URGP=0 Mar 28 09:52:59 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=176.31.236.101 DST=176.31.238.3 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=7430 SEQ=6 Mar 28 09:52:59 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=176.31.236.101 DST=176.31.238.3 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=7430 SEQ=7 Mar 28 09:52:59 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=176.31.236.101 DST=176.31.238.3 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=7430 SEQ=8 Mar 28 09:52:59 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=176.31.236.101 DST=176.31.238.3 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=7430 SEQ=9 Mar 28 09:52:59 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=176.31.236.101 DST=176.31.238.3 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=7430 SEQ=59 Mar 28 09:53:00 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=176.31.236.101 DST=176.31.238.3 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=7430 SEQ=152 Mar 28 09:53:01 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=176.31.236.101 DST=176.31.238.3 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=7430 SEQ=246 Mar 28 09:53:02 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=176.31.236.101 DST=176.31.238.3 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=7430 SEQ=339 Mar 28 09:53:03 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=176.31.236.101 DST=176.31.238.3 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=7430 SEQ=432 Mar 28 09:53:04 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=176.31.236.101 DST=176.31.238.3 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=7430 SEQ=524 Mar 28 09:53:05 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=176.31.236.101 DST=176.31.238.3 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=7430 SEQ=617 Mar 28 09:53:06 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=176.31.236.101 DST=176.31.238.3 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=7430 SEQ=711 Mar 28 09:53:07 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=176.31.236.101 DST=176.31.238.3 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=7430 SEQ=804 Mar 28 09:53:08 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=176.31.236.101 DST=176.31.238.3 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=7430 SEQ=897 Mar 28 09:53:16 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:c0:62:6b:e3:5c:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=60 TOS=0x00 PREC=0x00 TTL=51 ID=61402 DF PROTO=TCP SPT=57637 DPT=22 WINDOW=5840 RES=0x00 SYN URGP=0 Mar 28 09:53:19 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:c0:62:6b:e3:5c:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=60 TOS=0x00 PREC=0x00 TTL=51 ID=61403 DF PROTO=TCP SPT=57637 DPT=22 WINDOW=5840 RES=0x00 SYN URGP=0 Mar 28 09:53:21 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=64 TOS=0x00 PREC=0x00 TTL=51 ID=55674 DF PROTO=TCP SPT=57504 DPT=22 WINDOW=501 RES=0x00 ACK URGP=0 Mar 28 09:53:25 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:c0:62:6b:e3:5c:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=60 TOS=0x00 PREC=0x00 TTL=51 ID=61404 DF PROTO=TCP SPT=57637 DPT=22 WINDOW=5840 RES=0x00 SYN URGP=0 Mar 28 09:53:37 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=116 TOS=0x00 PREC=0x00 TTL=51 ID=55675 DF PROTO=TCP SPT=57504 DPT=22 WINDOW=501 RES=0x00 ACK PSH URGP=0 Mar 28 09:53:37 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=116 TOS=0x00 PREC=0x00 TTL=51 ID=55676 DF PROTO=TCP SPT=57504 DPT=22 WINDOW=501 RES=0x00 ACK PSH URGP=0 Mar 28 09:53:37 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=180 TOS=0x00 PREC=0x00 TTL=51 ID=55677 DF PROTO=TCP SPT=57504 DPT=22 WINDOW=501 RES=0x00 ACK PSH URGP=0 Mar 28 09:53:38 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=180 TOS=0x00 PREC=0x00 TTL=51 ID=55678 DF PROTO=TCP SPT=57504 DPT=22 WINDOW=501 RES=0x00 ACK PSH URGP=0 Mar 28 09:53:39 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=180 TOS=0x00 PREC=0x00 TTL=51 ID=55679 DF PROTO=TCP SPT=57504 DPT=22 WINDOW=501 RES=0x00 ACK PSH URGP=0 Mar 28 09:53:39 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:c0:62:6b:e3:5c:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=60 TOS=0x00 PREC=0x00 TTL=51 ID=5055 DF PROTO=TCP SPT=57638 DPT=22 WINDOW=5840 RES=0x00 SYN URGP=0 Mar 28 09:53:41 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=180 TOS=0x00 PREC=0x00 TTL=51 ID=55680 DF PROTO=TCP SPT=57504 DPT=22 WINDOW=501 RES=0x00 ACK PSH URGP=0 Mar 28 09:53:42 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:c0:62:6b:e3:5c:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=60 TOS=0x00 PREC=0x00 TTL=51 ID=5056 DF PROTO=TCP SPT=57638 DPT=22 WINDOW=5840 RES=0x00 SYN URGP=0 Mar 28 09:53:45 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:10:8c:cf:28:39:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=180 TOS=0x00 PREC=0x00 TTL=51 ID=55681 DF PROTO=TCP SPT=57504 DPT=22 WINDOW=501 RES=0x00 ACK PSH URGP=0 Mar 28 09:53:48 localhost kernel: iptables rejected: IN=eth0 OUT= MAC=00:25:90:54:d7:88:c0:62:6b:e3:5c:80:08:00 SRC=194.51.74.245 DST=176.31.238.3 LEN=60 TOS=0x00 PREC=0x00 TTL=51 ID=5057 DF PROTO=TCP SPT=57638 DPT=22 WINDOW=5840 RES=0x00 SYN URGP=0 If I correctly interpreted these results, they say that ICMP rules were correctly interpreted by iptables, but SSH rules were not. This does not make any sense... Does somebody understand where my error comes from? EDIT #3 : After some more tests, I found out that commenting the SYN flood countermeasure removes the problem. I continue researches in this way but, meanwhile, if somebody sees my anti SYN flood rule error...

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  • W2k8, Sybase Driver, Permissions

    - by Clustermagnet
    Trying to get a .net (32bit) app running on a Windows 2008 server. My experience in the Windows world is quite limited. Is this related to the Full/Medium trust settings? Have been Googling for quite some time. Appreciate your feedback! Seeing the following error: Required permissions cannot be acquired. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Security.Policy.PolicyException: Required permissions cannot be acquired. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [PolicyException: Required permissions cannot be acquired.] System.Security.SecurityManager.ResolvePolicy(Evidence evidence, PermissionSet reqdPset, PermissionSet optPset, PermissionSet denyPset, PermissionSet& denied, Boolean checkExecutionPermission) +7606467 System.Security.SecurityManager.ResolvePolicy(Evidence evidence, PermissionSet reqdPset, PermissionSet optPset, PermissionSet denyPset, PermissionSet& denied, Int32& securitySpecialFlags, Boolean checkExecutionPermission) +57 [FileLoadException: Could not load file or assembly 'Sybase.Data.AseClient, Version=1.155.1000.0, Culture=neutral, PublicKeyToken=26e0f1529304f4a7' or one of its dependencies. Failed to grant minimum permission requests. (Exception from HRESULT: 0x80131417)] System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection) +0 System.Reflection.Assembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection) +43 System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +127 System.Reflection.Assembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +142 System.Reflection.Assembly.Load(String assemblyString) +28 System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +46 [ConfigurationErrorsException: Could not load file or assembly 'Sybase.Data.AseClient, Version=1.155.1000.0, Culture=neutral, PublicKeyToken=26e0f1529304f4a7' or one of its dependencies. Failed to grant minimum permission requests. (Exception from HRESULT: 0x80131417)] System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +613 System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory() +203 System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo ai) +105 System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection compConfig) +178 System.Web.Compilation.WebDirectoryBatchCompiler..ctor(VirtualDirectory vdir) +163 System.Web.Compilation.BuildManager.BatchCompileWebDirectoryInternal(VirtualDirectory vdir, Boolean ignoreErrors) +53 System.Web.Compilation.BuildManager.BatchCompileWebDirectory(VirtualDirectory vdir, VirtualPath virtualDir, Boolean ignoreErrors) +175 System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath) +86 System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) +261 System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) +101 System.Web.Compilation.BuildManager.GetVirtualPathObjectFactory(VirtualPath virtualPath, HttpContext context, Boolean allowCrossApp, Boolean noAssert) +126 System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath(VirtualPath virtualPath, Type requiredBaseType, HttpContext context, Boolean allowCrossApp, Boolean noAssert) +62 System.Web.UI.PageHandlerFactory.GetHandlerHelper(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath) +33 System.Web.UI.PageHandlerFactory.GetHandler(HttpContext context, String requestType, String virtualPath, String path) +37 System.Web.MaterializeHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +307 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155 Version Information: Microsoft .NET Framework Version:2.0.50727.4959; ASP.NET Version:2.0.50727.4955

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  • missing files after reassemble of RAID-5

    - by Kris_R
    I had to open my file-server's housing on Sunday to replace a faulty fan. What I didn't see was that one of the sata-cables was not properly connected. The 1st thing I did after a reboot was a check of the RAID status and it showed immediately that one drive is missing. Till this moment the device was not used (however it was mounted, so I'm not 100% sure that system did nothing). I stopped md0 and re-plugged the cable: mdadm --stop /dev/md0 poweroff After another reboot I checked the removed drive: mdadm --examine /dev/sdd1 ... Checksum : 3276bc1d - correct Events : 315782 Layout : left-symmetric Chunk Size : 32K Number Major Minor RaidDevice State this 0 8 49 0 active sync /dev/sdd1 0 0 8 49 0 active sync /dev/sdd1 1 1 8 65 1 active sync /dev/sde1 2 2 8 33 2 active sync /dev/sdc1 3 3 8 17 3 active sync /dev/sdb1 I was a bit surprised that it was shown as active (even if earlier mdadm said, that this device was removed from array) and its checksum was OK. I recreated RAID with: mdadm --assemble /dev/md0 --scan The command mdadm --detail /dev/md0 showed that all drives were running and system was in "clean" state. I mounted the device md0 and then came hic-cup. I wanted to work on one of the last files that I had been using before all the situation and it was not there. In another place I missed actually all files from the directory where I was working. As far as I can see most of the files that are older than a few days are intact but some newer ones are missing. Now the big question: what would be your advice? Is there a way to get these data? I thought about removing the drive that was earlier labeled by mdadm and rebuild array with another empty HDD. I've found that after re-assemble the "broken" drive has another label (changed from sdd to sdb). Can this have influence on rebuilt process? If yes, how to reassemble the array properly? I'm sure the SATA-cables are connected still in the same order to the controller. p.s. Please no advises like "restore from backup". I'm doing back-ups on Sunday's night and this happened in the late afternoon, so backup is not really options for me. p.s.s. I asked this question on Unix&Linux but no answer came up during last two days. I'm getting quite anxious. Sorry for duplicating if any of you reading the other forum.

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  • NTPD seems to delete all network interfaces

    - by Aurelin
    We have a couple of virtual interfaces configured on eth0 on a CentOS, and every now and then, they went down seemingly out of the blue. Now after going through the log files, I found out that apparently ntpd deletes all eth0 interfaces, and that dhclient automatically brings eth0 back up. The virtual interfaces, however, stay down which causes several of our websites to be inaccessible. Can someone explain to me why ntpd deletes interfaces? Can / should that be turned off, or can / should I configure dhclient to bring the virtual interfaces back up automatically, too? EDIT// The log files that I should've posted : Nov 12 13:10:28 raptor dhclient[20048]: DHCPREQUEST on eth0 to 255.255.255.255 port 67 (xid=0x6a825e97) Nov 12 13:10:42 raptor dhclient[20048]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 (xid=0x24554092) Nov 12 13:10:42 raptor dhclient[20048]: DHCPOFFER from 96.126.108.78 Nov 12 13:10:42 raptor dhclient[20048]: DHCPREQUEST on eth0 to 255.255.255.255 port 67 (xid=0x24554092) Nov 12 13:10:42 raptor dhclient[20048]: DHCPACK from 96.126.108.78 (xid=0x24554092) Nov 12 13:10:42 raptor ntpd[2109]: Deleting interface #31 eth0, 50.116.50.97#123, interface stats: received=3255, sent=3256, dropped=0, active_time=1559394 secs Nov 12 13:10:42 raptor ntpd[2109]: Deleting interface #32 eth0:0, 50.116.53.56#123, interface stats: received=3, sent=0, dropped=0, active_time=1559391 secs Nov 12 13:10:42 raptor ntpd[2109]: Deleting interface #33 eth0:1, 66.175.211.192#123, interface stats: received=2, sent=0, dropped=0, active_time=1559389 secs Nov 12 13:10:42 raptor ntpd[2109]: Deleting interface #34 eth0:2, 50.116.53.95#123, interface stats: received=3, sent=0, dropped=0, active_time=1559387 secs Nov 12 13:10:42 raptor ntpd[2109]: Deleting interface #35 eth0:3, 97.107.132.32#123, interface stats: received=2, sent=0, dropped=0, active_time=1559385 secs Nov 12 13:10:42 raptor ntpd[2109]: Deleting interface #36 eth0:4, 50.116.56.201#123, interface stats: received=2, sent=0, dropped=0, active_time=1559383 secs Nov 12 13:10:42 raptor ntpd[2109]: Deleting interface #37 eth0:5, 66.175.212.121#123, interface stats: received=2, sent=0, dropped=0, active_time=1559381 secs Nov 12 13:10:42 raptor ntpd[2109]: Deleting interface #38 eth0:6, 66.175.215.137#123, interface stats: received=2, sent=0, dropped=0, active_time=1559379 secs Nov 12 13:10:44 raptor NET[1573]: /sbin/dhclient-script : updated /etc/resolv.conf Nov 12 13:10:44 raptor dhclient[20048]: bound to 50.116.50.97 -- renewal in 32692 seconds. Nov 12 13:10:45 raptor ntpd[2109]: Listening on interface #39 eth0, 50.116.50.97#123 Enabled The eth0 config : DEVICE="eth0" ONBOOT="yes" BOOTPROTO="dhcp" IPV6INIT="no" IPADDR=50.116.50.97 NETMASK=255.255.255.0 GATEWAY=50.116.50.1 And the virtual interfaces (I posted the first one only, they look the same for the most part) : # Configuration for eth0:0 DEVICE=eth0:0 BOOTPROTO=none # This line ensures that the interface will be brought up during boot. ONBOOT=yes # eth0:0 IPADDR=50.116.53.56 NETMASK=255.255.255.0

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  • Apache2 & .htaccess : Apache ignoring AccessFile

    - by Elyx0
    Hi there here is my server configuration: DEBIAN 32Bits / PHP 5 / Apache Server version: Apache/2.2.3 - Server built: Mar 22 2008 09:29:10 The AccessFiles : grep -ni AccessFileName * apache2.conf:134:AccessFileName .htaccess apache2.conf:667:AccessFileName .httpdoverride All the AllowOverride statements in my apache2/ folder. mods-available/userdir.conf:6: AllowOverride Indexes AuthConfig Limit mods-available/userdir.conf:16: AllowOverride FileInfo AuthConfig Limit mods-enabled/userdir.conf:6: AllowOverride Indexes AuthConfig Limit mods-enabled/userdir.conf:16: AllowOverride FileInfo AuthConfig Limit sites-enabled/default:8: AllowOverride All sites-enabled/default:14: AllowOverride All sites-enabled/default:19: AllowOverride All sites-enabled/default:24: AllowOverride All sites-enabled/default:42: AllowOverride All The sites-enabled/default file : 1 <VirtualHost *> 2 ServerAdmin [email protected] 3 ServerName mysite.com 4 ServerAlias mysite.com 5 DocumentRoot /var/www/mysite.com/ 6 <Directory /> 7 Options FollowSymLinks 8 AllowOverride All 9 Order Deny,Allow 10 Deny from all 11 </Directory> 12 <Directory /var/www/mysite.com/> 13 Options Indexes FollowSymLinks MultiViews 14 AllowOverride All 15 Order allow,deny 16 allow from all 17 </Directory> 18 <Directory /var/www/mysite.com/test/> 19 AllowOverride All 20 </Directory> 21 22 ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ 23 <Directory "/usr/lib/cgi-bin"> 24 AllowOverride All 25 Options ExecCGI -MultiViews +SymLinksIfOwnerMatch 26 Order allow,deny 27 Allow from all 28 </Directory> 29 30 ErrorLog /var/log/apache2/error.log 31 32 # Possible values include: debug, info, notice, warn, error, crit, 33 # alert, emerg. 34 LogLevel warn 35 36 CustomLog /var/log/apache2/access.log combined 37 ServerSignature Off 38 39 Alias /doc/ "/usr/share/doc/" 40 <Directory "/usr/share/doc/"> 41 Options Indexes MultiViews FollowSymLinks 42 AllowOverride All 43 Order deny,allow 44 Deny from all 45 Allow from 127.0.0.0/255.0.0.0 ::1/128 46 </Directory> 47 48 49 50 51 52 53 54 </VirtualHost> If i change any Allow from all in Deny from all , it works whenever i put it. I've got one .htaccess at /mysite.com/.htaccess & one at /mysite.com/test/.htaccess with: Order Deny,Allow Deny from all Neither of them work i can still see my website. I've got mod_rewrite enabled but i don't think it does anything here. I've tried almost everything :/ It works on my local environnement (MAMP) but fails when on my Debian server.

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  • sftp and public keys

    - by Lizard
    I am trying to sftp into an a server hosted by someone else. To make sure this worked I did the standard sftp [email protected] i was promted with the password and that worked fine. I am setting up a cron script to send a file once a week so have given them our public key which they claim to have added to their authorized_keys file. I now try sftp [email protected] again and I am still prompted for a password, but now the password doesn't work... Connecting to [email protected]... [email protected]'s password: Permission denied, please try again. [email protected]'s password: Permission denied, please try again. [email protected]'s password: Permission denied (publickey,password). Couldn't read packet: Connection reset by peer I did notice however that if I simply pressed enter (no password) it logged me in fine... So here are my questions: Is there a way to check what privatekey/pulbickey pair my sftp connection is using? Is it possible to specify what key pair to use? If all is setup correctly (using correct key pair and added to authorized files) why am I being asked to enter a blank password? Thanks for your help in advance! UPDATE I have just run sftp -vvv [email protected] .... debug1: Authentications that can continue: publickey,password debug3: start over, passed a different list publickey,password debug3: preferred gssapi-with-mic,publickey,keyboard-interactive,password debug3: authmethod_lookup publickey debug3: remaining preferred: keyboard-interactive,password debug3: authmethod_is_enabled publickey debug1: Next authentication method: publickey debug1: Offering public key: /root/.ssh/id_rsa debug3: send_pubkey_test debug2: we sent a publickey packet, wait for reply debug1: Server accepts key: pkalg ssh-rsa blen 277 debug2: input_userauth_pk_ok: SHA1 fp 45:1b:e7:b6:33:41:1c:bb:0f:e3:c1:0f:1b:b0:d5:e4:28:a3:3f:0e debug3: sign_and_send_pubkey debug1: read PEM private key done: type RSA debug1: Authentications that can continue: publickey,password debug1: Trying private key: /root/.ssh/id_dsa debug3: no such identity: /root/.ssh/id_dsa debug2: we did not send a packet, disable method debug3: authmethod_lookup password debug3: remaining preferred: ,password debug3: authmethod_is_enabled password debug1: Next authentication method: password It seems to suggest that it tries to use the public key... What am I missing?

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  • High Server Load cannot figure out why

    - by Tim Bolton
    My server is currently running CentOS 5.2, with WHM 11.34. Currently, we're at 6.43 to 12 for a load average. The sites that we're hosting are taking a lot time to respond and resolve. top doesn't show anything out of the ordinary and iftop doesn't show a lot of traffic. We have many resellers, and some not so good at writing code, how can we find the culprit? vmstat output: vmstat procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------ r b swpd free buff cache si so bi bo in cs us sy id wa st 0 2 84 78684 154916 1021080 0 0 72 274 0 14 6 3 80 12 0 top output (ordered by %CPU) top - 21:44:43 up 5 days, 10:39, 3 users, load average: 3.36, 4.18, 4.73 Tasks: 222 total, 3 running, 219 sleeping, 0 stopped, 0 zombie Cpu(s): 5.8%us, 2.3%sy, 0.2%ni, 79.6%id, 11.8%wa, 0.0%hi, 0.2%si, 0.0%st Mem: 2074580k total, 1863044k used, 211536k free, 174828k buffers Swap: 2040212k total, 84k used, 2040128k free, 987604k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 15930 mysql 15 0 138m 46m 4380 S 4 2.3 1:45.87 mysqld 21772 igniteth 17 0 23200 7152 3932 R 4 0.3 0:00.02 php 1586 root 10 -5 0 0 0 S 2 0.0 11:45.19 kjournald 21759 root 15 0 2416 1024 732 R 2 0.0 0:00.01 top 1 root 15 0 2156 648 560 S 0 0.0 0:26.31 init 2 root RT 0 0 0 0 S 0 0.0 0:00.35 migration/0 3 root 34 19 0 0 0 S 0 0.0 0:00.32 ksoftirqd/0 4 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/0 5 root RT 0 0 0 0 S 0 0.0 0:02.00 migration/1 6 root 34 19 0 0 0 S 0 0.0 0:00.11 ksoftirqd/1 7 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/1 8 root RT 0 0 0 0 S 0 0.0 0:01.29 migration/2 9 root 34 19 0 0 0 S 0 0.0 0:00.26 ksoftirqd/2 10 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/2 11 root RT 0 0 0 0 S 0 0.0 0:00.90 migration/3 12 root 34 19 0 0 0 R 0 0.0 0:00.20 ksoftirqd/3 13 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/3 top output (ordered by CPU time) top - 21:46:12 up 5 days, 10:41, 3 users, load average: 2.88, 3.82, 4.55 Tasks: 217 total, 1 running, 216 sleeping, 0 stopped, 0 zombie Cpu(s): 3.7%us, 2.0%sy, 2.0%ni, 67.2%id, 25.0%wa, 0.0%hi, 0.1%si, 0.0%st Mem: 2074580k total, 1959516k used, 115064k free, 183116k buffers Swap: 2040212k total, 84k used, 2040128k free, 1090308k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ TIME COMMAND 32367 root 16 0 215m 212m 1548 S 0 10.5 62:03.63 62:03 tailwatchd 1586 root 10 -5 0 0 0 S 0 0.0 11:45.27 11:45 kjournald 1576 root 10 -5 0 0 0 S 0 0.0 2:37.86 2:37 kjournald 27722 root 16 0 2556 1184 800 S 0 0.1 1:48.94 1:48 top 15930 mysql 15 0 138m 46m 4380 S 4 2.3 1:48.63 1:48 mysqld 2932 root 34 19 0 0 0 S 0 0.0 1:41.05 1:41 kipmi0 226 root 10 -5 0 0 0 S 0 0.0 1:34.33 1:34 kswapd0 2671 named 25 0 74688 7400 2116 S 0 0.4 1:23.58 1:23 named 3229 root 15 0 10300 3348 2724 S 0 0.2 0:40.85 0:40 sshd 1580 root 10 -5 0 0 0 S 0 0.0 0:30.62 0:30 kjournald 1 root 17 0 2156 648 560 S 0 0.0 0:26.32 0:26 init 2616 root 15 0 1816 576 480 S 0 0.0 0:23.50 0:23 syslogd 1584 root 10 -5 0 0 0 S 0 0.0 0:18.67 0:18 kjournald 4342 root 34 19 27692 11m 2116 S 0 0.5 0:18.23 0:18 yum-updatesd 8044 bollingp 15 0 3456 2036 740 S 1 0.1 0:15.56 0:15 imapd 26 root 10 -5 0 0 0 S 0 0.0 0:14.18 0:14 kblockd/1 7989 gmailsit 16 0 3196 1748 736 S 0 0.1 0:10.43 0:10 imapd iostat -xtk 1 10 output [root@server1 tmp]# iostat -xtk 1 10 Linux 2.6.18-53.el5 12/18/2012 Time: 09:51:06 PM avg-cpu: %user %nice %system %iowait %steal %idle 5.83 0.19 2.53 11.85 0.00 79.60 Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 1.37 118.83 18.70 54.27 131.47 692.72 22.59 4.90 67.19 3.10 22.59 sdb 0.35 39.33 20.33 61.43 158.79 403.22 13.75 5.23 63.93 3.77 30.80 Time: 09:51:07 PM avg-cpu: %user %nice %system %iowait %steal %idle 1.50 0.00 0.50 24.00 0.00 74.00 Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 25.00 2.00 2.00 128.00 108.00 118.00 0.03 7.25 4.00 1.60 sdb 0.00 16.00 41.00 145.00 200.00 668.00 9.33 107.92 272.72 5.38 100.10 Time: 09:51:08 PM avg-cpu: %user %nice %system %iowait %steal %idle 2.00 0.00 1.50 29.50 0.00 67.00 Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 95.00 3.00 33.00 12.00 480.00 27.33 0.07 1.72 1.31 4.70 sdb 0.00 14.00 1.00 228.00 4.00 960.00 8.42 143.49 568.01 4.37 100.10 Time: 09:51:09 PM avg-cpu: %user %nice %system %iowait %steal %idle 13.28 0.00 2.76 21.30 0.00 62.66 Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 21.00 1.00 19.00 16.00 192.00 20.80 0.06 3.55 1.30 2.60 sdb 0.00 36.00 28.00 181.00 124.00 884.00 9.65 121.16 617.31 4.79 100.10 Time: 09:51:10 PM avg-cpu: %user %nice %system %iowait %steal %idle 4.74 0.00 1.50 25.19 0.00 68.58 Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 20.00 3.00 15.00 12.00 136.00 16.44 0.17 7.11 3.11 5.60 sdb 0.00 0.00 103.00 60.00 544.00 248.00 9.72 52.35 545.23 6.14 100.10 Time: 09:51:11 PM avg-cpu: %user %nice %system %iowait %steal %idle 1.24 0.00 1.24 25.31 0.00 72.21 Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 75.00 4.00 28.00 16.00 416.00 27.00 0.08 3.72 2.03 6.50 sdb 2.00 9.00 124.00 17.00 616.00 104.00 10.21 3.73 213.73 7.10 100.10 Time: 09:51:12 PM avg-cpu: %user %nice %system %iowait %steal %idle 1.00 0.00 0.75 24.31 0.00 73.93 Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 24.00 1.00 9.00 4.00 132.00 27.20 0.01 1.20 1.10 1.10 sdb 4.00 40.00 103.00 48.00 528.00 212.00 9.80 105.21 104.32 6.64 100.20 Time: 09:51:13 PM avg-cpu: %user %nice %system %iowait %steal %idle 2.50 0.00 1.75 23.25 0.00 72.50 Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 125.74 3.96 46.53 15.84 689.11 27.92 0.20 4.06 2.41 12.18 sdb 2.97 0.00 91.09 84.16 419.80 471.29 10.17 85.85 590.78 5.66 99.11 Time: 09:51:14 PM avg-cpu: %user %nice %system %iowait %steal %idle 0.75 0.00 0.50 24.94 0.00 73.82 Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 88.00 1.00 7.00 4.00 380.00 96.00 0.04 4.38 3.00 2.40 sdb 3.00 7.00 111.00 44.00 540.00 208.00 9.65 18.58 581.79 6.46 100.10 Time: 09:51:15 PM avg-cpu: %user %nice %system %iowait %steal %idle 11.03 0.00 3.26 26.57 0.00 59.15 Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 145.00 7.00 53.00 28.00 792.00 27.33 0.15 2.50 1.55 9.30 sdb 1.00 0.00 155.00 0.00 800.00 0.00 10.32 2.85 18.63 6.46 100.10 [root@server1 tmp]# MySQL Show Full Processlist mysql> show full processlist; +------+---------------+-----------+-----------------------+----------------+------+----------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Id | User | Host | db | Command | Time | State | Info | +------+---------------+-----------+-----------------------+----------------+------+----------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | 1 | DB_USER_ONE | localhost | DB_ONE | Query | 3 | waiting for handler insert | INSERT DELAYED INTO defers (mailtime,msgid,email,transport_method,message,host,ip,router,deliveryuser,deliverydomain) VALUES(FROM_UNIXTIME('1355879748'),'1TivwL-0003y8-8l','[email protected]','remote_smtp','SMTP error from remote mail server after initial connection: host mx1.mail.tw.yahoo.com [203.188.197.119]: 421 4.7.0 [TS01] Messages from 75.125.90.146 temporarily deferred due to user complaints - 4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html','mx1.mail.tw.yahoo.com','203.188.197.119','lookuphost','','') | | 2 | DELAYED | localhost | DB_ONE | Delayed insert | 52 | insert | | | 3 | DELAYED | localhost | DB_ONE | Delayed insert | 68 | insert | | | 911 | DELAYED | localhost | DB_ONE | Delayed insert | 99 | Waiting for INSERT | | | 993 | DB_USER_TWO | localhost | DB_TWO | Sleep | 832 | | NULL | | 994 | DB_USER_ONE | localhost | DB_ONE | Query | 185 | Locked | delete from failures where FROM_UNIXTIME(UNIX_TIMESTAMP(NOW())-1296000) > mailtime | | 1102 | DB_USER_THREE | localhost | DB_THREE | Query | 29 | NULL | commit | | 1249 | DB_USER_FOUR | localhost | DB_FOUR | Query | 13 | NULL | commit | | 1263 | root | localhost | DB_FIVE | Query | 0 | NULL | show full processlist | | 1264 | DB_USER_SIX | localhost | DB_SIX | Query | 3 | NULL | commit | +------+---------------+-----------+-----------------------+----------------+------+----------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ 10 rows in set (0.00 sec)

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  • Android emulator performance on linux

    - by Rado
    I installed the android SDK and eclipse plugin on my laptop, but I was surprised to find out that the emulator eats up 100% of one of my cpu cores. I have exactly the same setup on a desktop machine that does not have this issue. Both computers are running arch linux and both were updated yesterday. Granted, the desktop has better hardware than the laptop, but I was expecting to get closer to 50% cpu usage than 100% on the laptop. Both android virtual devices have the same specs: CPU: ARM Target: Android 2.3.3 - API Level 10 Skin: WVGA800 SD Card: 512M hw.lcd.density: 240 vm.heapSize: 24 hw.ramSize: 256 Laptop host has Intel Core 2 T7200 @ 2GHz cpu with 2Gb RAM. Desktop host has AMD Phenom II X4 940 @ 3GHz cpu with 8Gb RAM. The android emulator uses only 1 core and here are the CPU usage results: Laptop: Cpu0 : 22.8%us, 76.5%sy, 0.0%ni, 0.3%id, 0.0%wa, 0.0%hi, 0.3%si, 0.0%st Cpu1 : 11.2%us, 2.4%sy, 0.0%ni, 86.4%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 2055484k total, 1860304k used, 195180k free, 5276k buffers Swap: 2000088k total, 106872k used, 1893216k free, 350780k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2026 xyz 20 0 396m 207m 7192 R 100 10.3 4:11.58 emulator-arm Desktop: Cpu0 : 0.7%us, 0.0%sy, 0.0%ni, 99.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu1 : 1.3%us, 0.0%sy, 0.0%ni, 98.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu2 : 5.0%us, 1.3%sy, 0.0%ni, 91.9%id, 1.7%wa, 0.0%hi, 0.0%si, 0.0%st Cpu3 : 0.3%us, 0.3%sy, 0.0%ni, 99.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 7666324k total, 6506808k used, 1159516k free, 1650960k buffers Swap: 8988348k total, 0k used, 8988348k free, 2867300k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2811 xyz 20 0 392m 220m 6276 S 8 2.9 0:33.58 emulator-arm Is there any way I can improve the emulator performance on the laptop? [UPDATE] I ran the emulator with the same settings, on the same laptop under Win7 and after starting up, it didn't use 100% of a CPU core unlike under linux. Also, I tried running the emulator from a terminal in Linux and I get this message when I don't get it under the desktop Linux host: Could not configure '/dev/hpet' to have a 1024Hz timer. This is not a fatal error, but for better emulation accuracy type: 'echo 1024 /proc/sys/dev/hpet/max-user-freq' as root. I'm not really familiar with rtc or hpet, but it doesn't seem that max-user-freq setting does anything, I still get the same warning.

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  • Linux buffer cache effect on IO writes?

    - by Patrick LeBoutillier
    I'm copying large files (3 x 30G) between 2 filesystems on a Linux server (kernel 2.6.37, 16 cores, 32G RAM) and I'm getting poor performance. I suspect that the usage of the buffer cache is killing the I/O performance. To try and narrow down the problem I used fio directly on the SAS disk to monitor the performance. Here is the output of 2 fio runs (the first with direct=1, the second one direct=0): Config: [test] rw=write blocksize=32k size=20G filename=/dev/sda # direct=1 Run 1: test: (g=0): rw=write, bs=32K-32K/32K-32K, ioengine=sync, iodepth=1 Starting 1 process Jobs: 1 (f=1): [W] [100.0% done] [0K/205M /s] [0/6K iops] [eta 00m:00s] test: (groupid=0, jobs=1): err= 0: pid=4667 write: io=20,480MB, bw=199MB/s, iops=6,381, runt=102698msec clat (usec): min=104, max=13,388, avg=152.06, stdev=72.43 bw (KB/s) : min=192448, max=213824, per=100.01%, avg=204232.82, stdev=4084.67 cpu : usr=3.37%, sys=16.55%, ctx=655410, majf=0, minf=29 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued r/w: total=0/655360, short=0/0 lat (usec): 250=99.50%, 500=0.45%, 750=0.01%, 1000=0.01% lat (msec): 2=0.01%, 4=0.02%, 10=0.01%, 20=0.01% Run status group 0 (all jobs): WRITE: io=20,480MB, aggrb=199MB/s, minb=204MB/s, maxb=204MB/s, mint=102698msec, maxt=102698msec Disk stats (read/write): sda: ios=0/655238, merge=0/0, ticks=0/79552, in_queue=78640, util=76.55% Run 2: test: (g=0): rw=write, bs=32K-32K/32K-32K, ioengine=sync, iodepth=1 Starting 1 process Jobs: 1 (f=1): [W] [100.0% done] [0K/0K /s] [0/0 iops] [eta 00m:00s] test: (groupid=0, jobs=1): err= 0: pid=4733 write: io=20,480MB, bw=91,265KB/s, iops=2,852, runt=229786msec clat (usec): min=16, max=127K, avg=349.53, stdev=4694.98 bw (KB/s) : min=56013, max=1390016, per=101.47%, avg=92607.31, stdev=167453.17 cpu : usr=0.41%, sys=6.93%, ctx=21128, majf=0, minf=33 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued r/w: total=0/655360, short=0/0 lat (usec): 20=5.53%, 50=93.89%, 100=0.02%, 250=0.01%, 500=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.12% lat (msec): 100=0.38%, 250=0.04% Run status group 0 (all jobs): WRITE: io=20,480MB, aggrb=91,265KB/s, minb=93,455KB/s, maxb=93,455KB/s, mint=229786msec, maxt=229786msec Disk stats (read/write): sda: ios=8/79811, merge=7/7721388, ticks=9/32418456, in_queue=32471983, util=98.98% I'm not knowledgeable enough with fio to interpret the results, but I don't expect the overall performance using the buffer cache to be 50% less than with O_DIRECT. Can someone help me interpret the fio output? Are there any kernel tunings that could fix/minimize the problem? Thanks a lot,

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  • Slow Memcached: Average 10ms memcached `get`

    - by Chris W.
    We're using Newrelic to measure our Python/Django application performance. Newrelic is reporting that across our system "Memcached" is taking an average of 12ms to respond to commands. Drilling down into the top dozen or so web views (by # of requests) I can see that some Memcache get take up to 30ms; I can't find a single use of Memcache get that returns in less than 10ms. More details on the system architecture: Currently we have four application servers each of which has a memcached member. All four memcached members participate in a memcache cluster. We're running on a cloud hosting provider and all traffic is running across the "internal" network (via "internal" IPs) When I ping from one application server to another the responses are in ~0.5ms Isn't 10ms a slow response time for Memcached? As far as I understand if you think "Memcache is too slow" then "you're doing it wrong". So am I doing it wrong? Here's the output of the memcache-top command: memcache-top v0.7 (default port: 11211, color: on, refresh: 3 seconds) INSTANCE USAGE HIT % CONN TIME EVICT/s GETS/s SETS/s READ/s WRITE/s cache1:11211 37.1% 62.7% 10 5.3ms 0.0 73 9 3958 84.6K cache2:11211 42.4% 60.8% 11 4.4ms 0.0 46 12 3848 62.2K cache3:11211 37.5% 66.5% 12 4.2ms 0.0 75 17 6056 170.4K AVERAGE: 39.0% 63.3% 11 4.6ms 0.0 64 13 4620 105.7K TOTAL: 0.1GB/ 0.4GB 33 13.9ms 0.0 193 38 13.5K 317.2K (ctrl-c to quit.) ** Here is the output of the top command on one machine: ** (Roughly the same on all cluster machines. As you can see there is very low CPU utilization, because these machines only run memcache.) top - 21:48:56 up 1 day, 4:56, 1 user, load average: 0.01, 0.06, 0.05 Tasks: 70 total, 1 running, 69 sleeping, 0 stopped, 0 zombie Cpu(s): 0.0%us, 0.0%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.3%st Mem: 501392k total, 424940k used, 76452k free, 66416k buffers Swap: 499996k total, 13064k used, 486932k free, 181168k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 6519 nobody 20 0 384m 74m 880 S 1.0 15.3 18:22.97 memcached 3 root 20 0 0 0 0 S 0.3 0.0 0:38.03 ksoftirqd/0 1 root 20 0 24332 1552 776 S 0.0 0.3 0:00.56 init 2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd 4 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kworker/0:0 5 root 20 0 0 0 0 S 0.0 0.0 0:00.02 kworker/u:0 6 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/0 7 root RT 0 0 0 0 S 0.0 0.0 0:00.62 watchdog/0 8 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 cpuset 9 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 khelper ...output truncated...

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  • Email can't be sent to my domain

    - by Jack W-H
    Hi Folks, Basically I have my domain howcode.com bought at DomainMonster.com. I have set it all up to point to MediaTemple nameservers and everything works - mostly - fine. I have registered an email address [email protected]. The setup is, I presume, working correctly. I can successfully send emails with the account. And I presume I can receive them - but the problem is, nobody can send them to me. Emailing from a regular, non-Googlemail account appears to work fine but it never arrives in the inbox. But when you email from a GoogleMail address, an error message is instantly returned saying this: Delivery to the following recipient failed permanently: [email protected] Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 550 550 relay not permitted (state 14). ----- Original message ----- Received: by 10.216.91.12 with SMTP id g12mr3673969wef.77.1271503997091; Sat, 17 Apr 2010 04:33:17 -0700 (PDT) Return-Path: Received: from [192.168.0.3] (client-81-98-94-79.cht-bng-014.adsl.virginmedia.net [81.98.94.79]) by mx.google.com with ESMTPS id x1sm29451927wbx.19.2010.04.17.04.33.15 (version=TLSv1/SSLv3 cipher=RC4-MD5); Sat, 17 Apr 2010 04:33:16 -0700 (PDT) From: Jack Webb-Heller Mime-Version: 1.0 (Apple Message framework v1078) Content-Type: multipart/alternative; boundary=Apple-Mail-7--1008464685 Subject: Re: Hi Date: Sat, 17 Apr 2010 12:33:14 +0100 In-Reply-To: <[email protected] To: Jack Webb-Heller References: <[email protected] Message-Id: <[email protected] X-Mailer: Apple Mail (2.1078) Does this work? On 17 Apr 2010, at 12:32, Jack Webb-Heller wrote: Hi I thought this may be something to do with my MX DNS settings. They are setup like so: MX name: howcode.com TTL: 43200 Type: MX Data: 10 mail.howcode.com. The A-Record for mail.howcode.com is setup like this: Name: mail.howcode.com TTL: 43200 Type: A Data: 205.186.187.129 Is this what's going wrong with the issue? Thanks very much Jack

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  • Unusual Apache->Tomcat caching issue.

    - by iftrue
    Right now, I have an Apache setup sitting in front of Tomcat to handle caching. This setup has been given to an external service to manage, and since the transition, I've noticed odd behavior. Specifically, when I request a swf file from the web server, I hit the Apache cache (good), but occasionally I'll receive a truncated file. Once I receive this truncated file, the cache will NOT refresh until I manually delete the cache and let the swf pull down from tomcat again. The external service claims that the configuration is fine, but I don't see any way this could be happening aside from improper configuration. Now, there are two apache and two tomcat servers under a load balancer, and occasionally one apache cache will break while another does not (leading to 50% of all requests getting bad, truncated data). Where should I start looking to debug this issue? What could POSSIBLY be causing this odd behavior? Edit: Inspecting the logs, tomcat throws this: java.io.IOException: Bad file number at java.io.FileInputStream.readBytes(Native Method) at java.io.FileInputStream.read(FileInputStream.java:199) at java.io.BufferedInputStream.read1(BufferedInputStream.java:256) at java.io.BufferedInputStream.read(BufferedInputStream.java:317) at java.io.FilterInputStream.read(FilterInputStream.java:90) at org.apache.catalina.servlets.DefaultServlet.copyRange(DefaultServlet.java:1968) at org.apache.catalina.servlets.DefaultServlet.copy(DefaultServlet.java:1714) at org.apache.catalina.servlets.DefaultServlet.serveResource(DefaultServlet.java:809) at org.apache.catalina.servlets.DefaultServlet.doGet(DefaultServlet.java:325) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:568) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.ha.session.JvmRouteBinderValve.invoke(JvmRouteBinderValve.java:209) at org.apache.catalina.ha.tcp.ReplicationValve.invoke(ReplicationValve.java:347) at org.terracotta.modules.tomcat.tomcat_5_5.SessionValve55.invoke(SessionValve55.java:57) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190) at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283) at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:767) at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:697) at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:889) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690) at java.lang.Thread.run(Thread.java:619) followed by access_log.2009-12-14.txt:1.2.3.4 - - [14/Dec/2009:00:27:32 -0500] "GET /myApp/mySwf.swf HTTP/1.1" 304 - access_log.2009-12-14.txt:1.2.3.4 - - [14/Dec/2009:01:27:33 -0500] "GET /myApp/mySwf.swf HTTP/1.1" 304 - access_log.2009-12-14.txt:1.2.3.4 - - [14/Dec/2009:01:39:53 -0500] "GET /myApp/mySwf.swf HTTP/1.1" 304 - access_log.2009-12-14.txt:1.2.3.4 - - [14/Dec/2009:02:27:38 -0500] "GET /myApp/mySwf.swf HTTP/1.1" 304 - So apache is caching the bad file size. What could possibly be causing this, and possibly separate, how do I ensure that this exception does not get written to cache?

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  • Linux buffer cache effect on IO writes?

    - by Patrick LeBoutillier
    Hi, I'm copying large files (3 x 30G) between 2 filesystems on a Linux server (kernel 2.6.37, 16 cores, 32G RAM) and I'm getting poor performance. I suspect that the usage of the buffer cache is killing the I/O performance. To try and narrow down the problem I used fio directly on the SAS disk to monitor the performance. Here is the output of 2 fio runs (the first with direct=1, the second one direct=0): Config: [test] rw=write blocksize=32k size=20G filename=/dev/sda # direct=1 Run 1: test: (g=0): rw=write, bs=32K-32K/32K-32K, ioengine=sync, iodepth=1 Starting 1 process Jobs: 1 (f=1): [W] [100.0% done] [0K/205M /s] [0/6K iops] [eta 00m:00s] test: (groupid=0, jobs=1): err= 0: pid=4667 write: io=20,480MB, bw=199MB/s, iops=6,381, runt=102698msec clat (usec): min=104, max=13,388, avg=152.06, stdev=72.43 bw (KB/s) : min=192448, max=213824, per=100.01%, avg=204232.82, stdev=4084.67 cpu : usr=3.37%, sys=16.55%, ctx=655410, majf=0, minf=29 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued r/w: total=0/655360, short=0/0 lat (usec): 250=99.50%, 500=0.45%, 750=0.01%, 1000=0.01% lat (msec): 2=0.01%, 4=0.02%, 10=0.01%, 20=0.01% Run status group 0 (all jobs): WRITE: io=20,480MB, aggrb=199MB/s, minb=204MB/s, maxb=204MB/s, mint=102698msec, maxt=102698msec Disk stats (read/write): sda: ios=0/655238, merge=0/0, ticks=0/79552, in_queue=78640, util=76.55% Run 2: test: (g=0): rw=write, bs=32K-32K/32K-32K, ioengine=sync, iodepth=1 Starting 1 process Jobs: 1 (f=1): [W] [100.0% done] [0K/0K /s] [0/0 iops] [eta 00m:00s] test: (groupid=0, jobs=1): err= 0: pid=4733 write: io=20,480MB, bw=91,265KB/s, iops=2,852, runt=229786msec clat (usec): min=16, max=127K, avg=349.53, stdev=4694.98 bw (KB/s) : min=56013, max=1390016, per=101.47%, avg=92607.31, stdev=167453.17 cpu : usr=0.41%, sys=6.93%, ctx=21128, majf=0, minf=33 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued r/w: total=0/655360, short=0/0 lat (usec): 20=5.53%, 50=93.89%, 100=0.02%, 250=0.01%, 500=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.12% lat (msec): 100=0.38%, 250=0.04% Run status group 0 (all jobs): WRITE: io=20,480MB, aggrb=91,265KB/s, minb=93,455KB/s, maxb=93,455KB/s, mint=229786msec, maxt=229786msec Disk stats (read/write): sda: ios=8/79811, merge=7/7721388, ticks=9/32418456, in_queue=32471983, util=98.98% I'm not knowledgeable enough with fio to interpret the results, but I don't expect the overall performance using the buffer cache to be 50% less than with O_DIRECT. Can someone help me interpret the fio output? Are there any kernel tunings that could fix/minimize the problem? Thanks a lot,

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  • samba 3.5 "force user" doesn't seem to be sticking

    - by myCubeIsMyCell
    After installing a new OS with newer version of samba, I'm having trouble accessing my shares. I can browse to the specific share, but only to the top level. As best I can tell from the logs, it seems the "force user" in the samba config isn't sticking beyond the initial connection. Details below. I installed a new version of CentOS on my storage server. My old CentOS (4?)install had samba version 3.0.33, new CentOS is using 3.5.10. No domain/AD involved ... just home workgroup. no real security... just some shares hidden & some defined as read-only. here's my config: [global] workgroup = WORKGROUP server string = Samba Server Version %v netbios name = luna security = share # logs split per machine log file = /var/log/samba/log.%m log level = 2 # max 50KB per log file, then rotate max log size = 50 winbind use default domain = Yes [strge] comment = please path = /storage browseable = yes read only = no force user = windowsguest force group = users guest ok = yes So... the problem I'm running into is that the 'force user' only seems to hold for the initial connection & I see all the top level folders fine. When I drill into a folder I get access denied - which appears to be due to my windows user info being sent (trys to authenticate xuser - a non-existant user to samba, so maps to nobody & fails). Here's the smb error msg: [2012/11/29 14:30:27.326195, 2] auth/auth.c:314(check_ntlm_password) check_ntlm_password: Authentication for user [xuser] -> [xuser] FAILED with error NT_STATUS_NO_SUCH_USER [2012/11/29 14:30:27.326251, 2] auth/auth.c:314(check_ntlm_password) check_ntlm_password: Authentication for user [nobody] -> [nobody] FAILED with error NT_STATUS_NO_SUCH_USER Most of the top level directories are 755, some 777. Either way, can not access them. If I do a chown -R windowsguest.users ... no change... but if I do a chmod -R to 777 or 755 they become browsable... but still can't create files (even for 777 ones). Not sure what role it plays if any... but had to recreate the user windowsguest under the new os install, uid & gid match old user. Seems the main issue as far as I can tell is that samba isn't maintaining the 'force user' - but I could be wildly off base. Client OS is win7 pro x64. Thanks for any suggestions or advice!

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  • HIGH CPU USAGE + low memory usage

    - by hadi
    as you can see in below , there are high cpu usage by httpd request. please help me to decrease them. thanks. 28577 apache 15 0 99676 53m 3488 S 21 0.2 1:13.67 httpd 28568 apache 15 0 99676 53m 3496 S 19 0.2 1:14.92 httpd 28608 apache 15 0 99676 53m 3428 R 19 0.2 0:28.28 httpd 28615 apache 15 0 99676 53m 3436 R 19 0.2 0:25.33 httpd 28616 apache 15 0 99676 53m 3440 S 19 0.2 0:25.83 httpd 28619 apache 15 0 99676 53m 3436 R 19 0.2 0:26.12 httpd 28635 apache 15 0 97.9m 54m 3416 S 19 0.2 0:24.86 httpd 28558 apache 15 0 97.9m 54m 3432 R 17 0.2 1:40.75 httpd 28560 apache 15 0 97.9m 54m 3496 R 17 0.2 1:40.02 httpd 28621 apache 15 0 97.9m 54m 3420 S 17 0.2 0:25.61 httpd 28641 apache 16 0 97.9m 54m 3428 R 17 0.2 0:21.52 httpd 28642 apache 15 0 99756 53m 3424 R 15 0.2 0:21.46 httpd 28643 apache 15 0 99676 53m 3424 S 15 0.2 0:21.59 httpd 28594 apache 15 0 99756 53m 3428 R 13 0.2 0:44.41 httpd 28618 apache 15 0 99676 53m 3420 S 13 0.2 0:26.15 httpd 28654 apache 15 0 99676 53m 3472 S 13 0.2 0:04.27 httpd 28575 apache 15 0 99756 53m 3436 R 11 0.2 1:14.02 httpd 28576 apache 15 0 99676 53m 3496 S 11 0.2 1:16.79 httpd 28634 apache 15 0 99676 53m 3436 S 11 0.2 0:25.36 httpd 28653 apache 15 0 99676 53m 3424 S 11 0.2 0:04.35 httpd 28574 apache 15 0 99676 53m 3440 S 10 0.2 1:13.05 httpd 28592 apache 15 0 99676 53m 3492 R 10 0.2 0:45.78 httpd 28595 apache 15 0 99676 53m 3432 R 10 0.2 0:47.02 httpd 28617 apache 16 0 99676 53m 3436 S 10 0.2 0:25.32 httpd 28620 apache 15 0 99676 53m 3432 S 10 0.2 0:25.35 httpd 28597 apache 15 0 99676 53m 3428 S 8 0.2 0:43.56 httpd 11345 mysql 15 0 2927m 198m 4472 R 4 0.6 1624:43 mysqld 1 root 15 0 2036 648 552 S 0 0.0 0:16.97 init 2 root RT 0 0 0 0 S 0 0.0 0:48.50 migration/0 3 root 34 19 0 0 0 S 0 0.0 0:26.72 ksoftirqd/0 4 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/0 5 root RT 0 0 0 0 S 0 0.0 0:04.98 migration/1 6 root 34 19 0 0 0 R 0 0.0 0:27.51 ksoftirqd/1 7 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/1 8 root RT 0 0 0 0 S 0 0.0 0:15.42 migration/2 9 root 34 19 0 0 0 S 0 0.0 0:26.50 ksoftirqd/2 10 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/2

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  • l2tp server always 'sent [CCP ResetReq id=0x3]' when got compressed data request

    - by wilbur
    I have built a xl2tpd/ipsec server on my ubuntu 12.04.3, and I managed to make a l2tp vpn connection to the xl2tpd server from my android phone. The xl2tpd log said xl2tpd[10828]: Enabling IPsec SAref processing for L2TP transport mode SAs xl2tpd[10828]: IPsec SAref does not work with L2TP kernel mode yet, enabling forceuserspace=yes xl2tpd[10828]: setsockopt recvref[22]: Protocol not available xl2tpd[10828]: This binary does not support kernel L2TP. xl2tpd[10828]: xl2tpd version xl2tpd-1.2.8 started on atime.me PID:10828 xl2tpd[10828]: Written by Mark Spencer, Copyright (C) 1998, Adtran, Inc. xl2tpd[10828]: Forked by Scott Balmos and David Stipp, (C) 2001 xl2tpd[10828]: Inherited by Jeff McAdams, (C) 2002 xl2tpd[10828]: Forked again by Xelerance (www.xelerance.com) (C) 2006 xl2tpd[10828]: Listening on IP address 0.0.0.0, port 1701 xl2tpd[10828]: control_finish: Peer requested tunnel 39154 twice, ignoring second one. xl2tpd[10828]: Connection established to 117.136.8.59, 43149. Local: 25339, Remote: 39154 (ref=0/0). LNS session is 'default' However I cannot access the web in my browser. The pppd log said rcvd [Compressed data] 00 1d 82 c4 7c 04 d8 09 ... sent [CCP ResetReq id=0x7] I have googled a lot and found that this was mostly caused by a mppe decompression error. I have disabled BSD-Compress compression with nobsdcomp in /etc/ppp/xl2tpd-options but it did not work. I used openswan-2.6.33 and xl2tpd-1.2.8 which were built from source. And my configurations: /etc/ipsec.conf version 2.0 config setup nat_traversal=yes virtual_private=%v4:10.0.0.0/8,%v4:192.168.0.0/16,%v4:172.16.0.0/12 oe=off protostack=netkey conn L2TP-PSK-NAT rightsubnet=vhost:%priv also=L2TP-PSK-noNAT conn L2TP-PSK-noNAT authby=secret pfs=no auto=add keyingtries=3 rekey=no ikelifetime=8h keylife=1h type=transport left=106.186.121.214 leftprotoport=17/1701 right=%any rightprotoport=17/%any /etc/xl2tpd/xl2tpd.conf [global] ipsec saref = yes [lns default] local ip = 10.10.11.1 ip range = 10.10.11.2-10.10.11.245 refuse chap = yes refuse pap = yes require authentication = yes ppp debug = yes pppoptfile = /etc/ppp/xl2tpd-options length bit = yes /etc/ppp/xl2tpd-options require-mschap-v2 ms-dns 8.8.8.8 ms-dns 8.8.4.4 asyncmap 0 auth crtscts lock hide-password modem name l2tpd proxyarp lcp-echo-interval 30 lcp-echo-failure 4 debug nobsdcomp Any suggestions? Thanks in advance.

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  • VPN Connection causes DNS to use wrong DNS server

    - by Bryan
    I have a Windows 7 PC on our company network (which is a member of our Active Directory). Everything works fine until I open a VPN connection to a customer's site. When I do connect, I lose network access to shares on the network, including directories such as 'Application Data' that we have a folder redirection policy for. As you can imagine, this makes working on the PC very difficult, as desktop shortcuts stop working, software stops working properly due to having 'Application Data' pulled from under it. Our network is routed (10.58.5.0/24), with other local subnets existing within the scope of 10.58.0.0/16. The remote network is on 192.168.0.0/24. I've tracked the issue down to being DNS related. As soon as I open the VPN tunnel, all my DNS traffic goes via the remote network, which explains the loss of local resources, but my question is, how can I force local DNS queries to go to our local DNS servers rather than our customers? The output of ipconfig /all when not connected to the VPN is below: Windows IP Configuration Host Name . . . . . . . . . . . . : 7k5xy4j Primary Dns Suffix . . . . . . . : mydomain.local Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : mydomain.local Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : mydomain.local Description . . . . . . . . . . . : Broadcom NetLink (TM) Gigabit Ethernet Physical Address. . . . . . . . . : F0-4D-A2-DB-3B-CA DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::9457:c5e0:6f10:b298%10(Preferred) IPv4 Address. . . . . . . . . . . : 10.58.5.89(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : 31 January 2012 15:55:47 Lease Expires . . . . . . . . . . : 10 February 2012 10:11:30 Default Gateway . . . . . . . . . : 10.58.5.1 DHCP Server . . . . . . . . . . . : 10.58.3.32 DHCPv6 IAID . . . . . . . . . . . : 250629538 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-14-AC-76-2D-F0-4D-A2-DB-3B-CA DNS Servers . . . . . . . . . . . : 10.58.3.32 10.58.3.33 NetBIOS over Tcpip. . . . . . . . : Enabled This is the output of the same command with the VPN tunnel connected: Windows IP Configuration Host Name . . . . . . . . . . . . : 7k5xy4j Primary Dns Suffix . . . . . . . : mydomain.local Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : mydomain.local PPP adapter Customer Domain: Connection-specific DNS Suffix . : customerdomain.com Description . . . . . . . . . . . : CustomerDomain Physical Address. . . . . . . . . : DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes IPv4 Address. . . . . . . . . . . : 192.168.0.85(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.255 Default Gateway . . . . . . . . . : DNS Servers . . . . . . . . . . . : 192.168.0.16 192.168.0.17 Primary WINS Server . . . . . . . : 192.168.0.17 NetBIOS over Tcpip. . . . . . . . : Disabled Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : mydomain.local Description . . . . . . . . . . . : Broadcom NetLink (TM) Gigabit Ethernet Physical Address. . . . . . . . . : F0-4D-A2-DB-3B-CA DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::9457:c5e0:6f10:b298%10(Preferred) IPv4 Address. . . . . . . . . . . : 10.58.5.89(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : 31 January 2012 15:55:47 Lease Expires . . . . . . . . . . : 10 February 2012 10:11:30 Default Gateway . . . . . . . . . : 10.58.5.1 DHCP Server . . . . . . . . . . . : 10.58.3.32 DHCPv6 IAID . . . . . . . . . . . : 250629538 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-14-AC-76-2D-F0-4D-A2-DB-3B-CA DNS Servers . . . . . . . . . . . : 10.58.3.32 10.58.3.33 NetBIOS over Tcpip. . . . . . . . : Enabled Routing table Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 10.58.5.1 10.58.5.89 20 10.58.5.0 255.255.255.0 On-link 10.58.5.89 276 10.58.5.89 255.255.255.255 On-link 10.58.5.89 276 10.58.5.255 255.255.255.255 On-link 10.58.5.89 276 91.194.153.42 255.255.255.255 10.58.5.1 10.58.5.89 21 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 192.168.0.0 255.255.255.0 192.168.0.95 192.168.0.85 21 192.168.0.85 255.255.255.255 On-link 192.168.0.85 276 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 10.58.5.89 276 224.0.0.0 240.0.0.0 On-link 192.168.0.85 276 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 10.58.5.89 276 255.255.255.255 255.255.255.255 On-link 192.168.0.85 276 The binding order for the interfaces is as follows: I've not configured the VPN tunnel to use the default gateway at the remote end, and network comms to nodes on both networks are fine. (i.e. I can ping any node on our network or the remote network). I've modified the PPTP connection properties to use the DNS servers 10.58.3.32 followed by 192.168.0.16, yet the query still goes to 192.168.0.16. Edit: The local resources that disappear are hosted on domain DFS roots, which might (or might not) be relevant.

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  • Download - Upload is too slow on Centos

    - by Mehdi
    My download/upload in server and out of server is too slow (around 50 KB/s !) ! Did I miss some configuration ? Some information: CentOS release 6.3 uptime load average: 0.17, 0.32, 0.37 Memory free -m total used free shared buffers cached Mem: 24009 21988 2021 0 806 18098 -/+ buffers/cache: 3083 20926 Swap: 4095 28 4067 lshw -C network *-network description: Ethernet interface product: 82574L Gigabit Network Connection vendor: Intel Corporation physical id: 0 bus info: pci@0000:02:00.0 logical name: eth0 version: 00 serial: 00:25:90:70:17:4a size: 100MB/s capacity: 1GB/s width: 32 bits clock: 33MHz capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=off broadcast=yes driver=e1000e driverversion=1.9.5-k duplex=full firmware=2.1-2 ip=108.175.8.123 latency=0 link=yes multicast=yes port=twisted pair speed=100MB/s resources: irq:16 memory:fb900000-fb91ffff ioport:e000(size=32) memory:fb920000-fb923fff ethtool ethtool eth0 Settings for eth0: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supports auto-negotiation: Yes Advertised link modes: Not reported Advertised pause frame use: No Advertised auto-negotiation: No Speed: 100Mb/s Duplex: Full Port: Twisted Pair PHYAD: 1 Transceiver: internal Auto-negotiation: off MDI-X: off Supports Wake-on: pumbg Wake-on: g Current message level: 0x00000001 (1) Link detected: yes dmesg |grep e1000e dmesg |grep e1000e e1000e: Intel(R) PRO/1000 Network Driver - 1.9.5-k e1000e: Copyright(c) 1999 - 2012 Intel Corporation. e1000e 0000:02:00.0: Disabling ASPM L0s e1000e 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 e1000e 0000:02:00.0: setting latency timer to 64 e1000e 0000:02:00.0: irq 33 for MSI/MSI-X e1000e 0000:02:00.0: irq 34 for MSI/MSI-X e1000e 0000:02:00.0: irq 35 for MSI/MSI-X e1000e 0000:02:00.0: eth0: (PCI Express:2.5GT/s:Width x1) 00:25:90:70:17:4a e1000e 0000:02:00.0: eth0: Intel(R) PRO/1000 Network Connection e1000e 0000:02:00.0: eth0: MAC: 3, PHY: 8, PBA No: FFFFFF-0FF e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None e1000e 0000:02:00.0: eth0: 10/100 speed: disabling TSO e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None e1000e 0000:02:00.0: eth0: 10/100 speed: disabling TSO e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None e1000e 0000:02:00.0: eth0: 10/100 speed: disabling TSO e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None e1000e 0000:02:00.0: eth0: 10/100 speed: disabling TSO e1000e 0000:02:00.0: eth0: 10/100 speed: disabling TSO e1000e 0000:02:00.0: eth0: Unsupported Speed/Duplex configuration e1000e: eth0 NIC Link is Up 10 Mbps Full Duplex, Flow Control: None e1000e 0000:02:00.0: eth0: 10/100 speed: disabling TSO e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None e1000e 0000:02:00.0: eth0: 10/100 speed: disabling TSO e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None e1000e 0000:02:00.0: eth0: 10/100 speed: disabling TSO e1000e 0000:02:00.0: Disabling ASPM L1 e1000e 0000:02:00.0: eth0: changing MTU from 1500 to 9000 e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None e1000e 0000:02:00.0: eth0: 10/100 speed: disabling TSO e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None e1000e 0000:02:00.0: eth0: 10/100 speed: disabling TSO e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None e1000e 0000:02:00.0: eth0: 10/100 speed: disabling TSO

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  • Email been marked as spam

    - by Rodrigo Ferrari
    Hello friends! Friends, I tried a lot of changes, but no success to send the email correctly formated, I'm using the same domain to send mail and the email pass trough spf and authentication, but has been marked as spam for some accounts using gmail ou google app's. The header's are: Delivered-To: [email protected] Received: by 10.231.208.5 with SMTP id ga5cs194453ibb; Mon, 17 Jan 2011 11:08:33 -0800 (PST) Received: by 10.142.213.18 with SMTP id l18mr4141524wfg.192.1295291312735; Mon, 17 Jan 2011 11:08:32 -0800 (PST) Return-Path: <[email protected]> Received: from hm1315-29.locaweb.com.br (hm1315-29.locaweb.com.br [201.76.49.185]) by mx.google.com with ESMTP id a70si8528144yhd.33.2011.01.17.11.08.32; Mon, 17 Jan 2011 11:08:32 -0800 (PST) Received-SPF: pass (google.com: domain of [email protected] designates 201.76.49.185 as permitted sender) client-ip=201.76.49.185; Authentication-Results: mx.google.com; spf=pass (google.com: domain of [email protected] designates 201.76.49.185 as permitted sender) [email protected] Received: from hm1974.locaweb.com.br (189.126.112.86) by hm1315-38.locaweb.com.br (PowerMTA(TM) v3.5r15) id h6i9r00nvfo8 for <[email protected]>; Mon, 17 Jan 2011 17:08:31 -0200 (envelope-from <[email protected]>) X-Spam-Status: No Received: from bart0020.locaweb.com.br (bart0020.email.locaweb.com.br [200.234.210.22]) by hm1974.locaweb.com.br (Postfix) with ESMTP id 9C03511E00B5; Mon, 17 Jan 2011 17:08:31 -0200 (BRST) X-LocaWeb-COR: locaweb_2009_x-mail Received: from admin.domain.com.br (hm686.locaweb.com.br [200.234.200.116]) (Authenticated sender: [email protected]) by bart0020.locaweb.com.br (Postfix) with ESMTPA id 4B2F08CAFD6B; Mon, 17 Jan 2011 17:08:31 -0200 (BRST) Message-ID: <[email protected]> Date: Mon, 17 Jan 2011 17:08:31 -0200 Subject: Domain - Assunto From: Sistema <[email protected]> Reply-To: rodrigo <[email protected]> To: balucia <[email protected]> MIME-Version: 1.0 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Virus-Scanned: clamav-milter 0.96.5 at hm1974 X-Virus-Status: Clean This header has been marked as spam, I had no more ideas how to fix it and there are people borrowing me about this. Thanks and best regard's.

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  • Resolving CloudFlare DNS related mail delivery problems

    - by Andy Castles
    I recently started using CloudFlare and am having a few teething problems. Our domain is netlanguages.com and while we have a lot of sub-domains listen, we are currently only trialling a few of the servers through the CloudFlare CDN (for example, www.netlanguages.com is enabled for CDN, netlanguages.com is not). The actual CDN service seems to be reliable, but the problem that we are having is with DNS, and specifically with mail delivery. The background is that we have contact forms on our web site which use PHP mail() to send the details to end-users' email addresses, with the "from" address of the messages being [email protected] which is a valid address on our mail server. Most of the mails are arriving correctly, but a few specific people are not receiving them. The webserver uses qmail to deliver the messages, and the qmail log files show us some of the errors that the receiving mail servers return when they reject the mail delivery attempt. Two examples: Connected to 94.100.176.20 but sender was rejected./Remote host said: 421 DNS problem (interdominios.netlanguages.com). Try again later Connected to 213.186.33.29 but sender was rejected./Remote host said: 451 DNS temporary failure (#4.3.0) From what I can tell, the receiving SMTP server is doing a DNS lookup of some description on either the host of the "from" email address (netlanguages.com) or the server name given in the EHLO command of the SMTP conversation (in the first example above, interdominios.netlanguages.com), both of which should resolve to non-CloudFlare IP addresses. I've read that the CloudFlare DNS service is very reliable and fast but both of the problems above seem to point to a problem with remote servers unable to do DNS lookups. I should also point out that we changed our DNS to CloudFlare on 6th Feb, and since then started experiencing these mail delivery problems. On 22nd Feb we moved our DNS away from CloudFlare to see if the issues were related to CloudFlare and after a few hours delivery began to work. Then on 26th Feb I moved the DNS back to CloudFlare again and delivery problems started again. The issues definitely seems to be related to DNS, but I don't know if it's a configuration issue, or something else. Finally, I should say that our two DNS MX records point to non-CDN A record IP addresses, interdominios.netlanguages.com (the web and qmail server) also points to a non-CDN A record IP address. Does anyone know what the problem could be here? Any light you can shed on this will be most appreciated. Many thanks, Andy

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  • Ubuntu unattended-upgrades stops apache

    - by Robbie
    This morning i was alerted to the fact that both apache instances serving my app were not responding to requests from my load balancer. I attempted apachectl restart and it said apache was not running. So, i started apache on both instances and got the service up again. I then followed the logs and worked out that both had performed upgrades via the unattended-upgrades package moments before they stopped responding. /var/log/unattended-upgrades/unattended-upgrades.log 2013-07-02 06:30:51,875 INFO Starting unattended upgrades script 2013-07-02 06:30:51,875 INFO Allowed origins are: ['o=Ubuntu,a=precise-security'] 2013-07-02 06:33:57,771 INFO Packages that are upgraded: accountsservice apache2 apache2-mpm-prefork apache2-utils apache2.2-bin apache2.2-common apparmor apport apt apt-transport-https apt-utils bind9-host binutils dbus dnsutils gnupg gpgv isc-dhcp-client isc-dhcp-common krb5-locales libaccountsservice0 libapt-inst1.4 libapt-pkg4.12 libbind9-80 libc-bin libc-dev-bin libc6 libc6-dev libcurl3-gnutls libdbus-1-3 libdbus-glib-1-2 libdns81 libdrm-intel1 libdrm-nouveau1a libdrm-radeon1 libdrm2 libexpat1 libfreetype6 libgc1c2 libgnutls-dev libgnutls-openssl27 libgnutls26 libgnutlsxx27 libisc83 libisccc80 libisccfg82 liblwres80 libruby1.8 libx11-6 libx11-data libxcb1 libxext6 libxml2 linux-firmware linux-image-virtual linux-libc-dev linux-virtual multiarch-support openssl perl perl-base perl-modules python-apport python-crypto python-keyring python-problem-report python-software-properties ri1.8 ruby1.8 ruby1.8-dev sudo tzdata update-manager-core 2013-07-02 06:33:57,772 INFO Writing dpkg log to '/var/log/unattended-upgrades/unattended-upgrades-dpkg_2013-07-02_06:33:57.772399.log' 2013-07-02 06:36:10,584 INFO All upgrades installed I'm running Ubuntu 12.04 on Amazon EC2 servers. I have unattended-upgrades installed and configured as follows: /etc/apt/apt.conf.d/50unattended-upgrades // Automatically upgrade packages from these (origin:archive) pairs Unattended-Upgrade::Allowed-Origins { "${distro_id}:${distro_codename}-security"; // "${distro_id}:${distro_codename}-updates"; // "${distro_id}:${distro_codename}-proposed"; // "${distro_id}:${distro_codename}-backports"; }; // List of packages to not update Unattended-Upgrade::Package-Blacklist { }; /etc/apt/apt.conf.d/20auto-upgrades APT::Periodic::Update-Package-Lists "1"; APT::Periodic::Unattended-Upgrade "1"; I've struggled to find documentation about what happens to running processes during an upgrade. - Is this expected behaviour? Or should unattended-upgrades restart apache after upgrading it? - What can I do to ensure apache is restarted correctly? Should I just blacklist the apache package?

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  • How to make Horde connect to mysql with UTF-8 character set?

    - by jkj
    How to tell horde 3.3.11 to use UTF-8 for it's mysql connection? The $conf['sql']['charset'] only tells horde what is expected from the database. Horde uses MDB2 to connect to mysql. Is there way to force MDB2 or mysql character_set_client from php.ini? So far I found two workarounds: Force mysql to ignore character set requested by client [mysqld] skip-character-set-client-handshake=1 default-character-set=utf8 Force mysql to run SET NAMES utf8 on every connection [mysqld] init-connect='SET NAMES utf8' Both have drawbacks on multi user mysql server. The first disables converting character sets alltogether and the second one forces every connection to produce UTF-8. [EDIT] Found the problem. The 'charset' parameter was unset the last minute before sending to SQL backend. This is probably due to mysql not being able to digest utf-8 but utf8. Mysql specific mapping is required to make it work. I just worked around it by translating utf-8 - utf8. Won't work with any other databases with this patch though. --- lib/Horde/Share/sql.php.orig 2011-07-04 17:09:33.349334890 +0300 +++ lib/Horde/Share/sql.php 2011-07-04 17:11:06.238636462 +0300 @@ -753,7 +753,13 @@ /* Connect to the sql server using the supplied parameters. */ require_once 'MDB2.php'; $params = $this->_params; - unset($params['charset']); + + if ($params['charset'] == 'utf-8') { + $params['charset'] = 'utf8'; + } else { + unset($params['charset']); + } + $this->_write_db = &MDB2::factory($params); if (is_a($this->_write_db, 'PEAR_Error')) { Horde::fatal($this->_write_db, __FILE__, __LINE__); @@ -792,7 +798,13 @@ /* Check if we need to set up the read DB connection seperately. */ if (!empty($this->_params['splitread'])) { $params = array_merge($params, $this->_params['read']); - unset($params['charset']); + + if ($params['charset'] == 'utf-8') { + $params['charset'] = 'utf8'; + } else { + unset($params['charset']); + } + $this->_db = &MDB2::singleton($params); if (is_a($this->_db, 'PEAR_Error')) { Horde::fatal($this->_db, __FILE__, __LINE__);

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  • Windows cannot find the host name "download.microsoft.com" using DNS

    - by joedotnot
    When trying to download a file found on the Microsoft downloads center that starts with, for example, http://download.microsoft.com/download/6/8/7/(some_GUID)/(some_file_name.ext) i get a timeout with "Internet Explorer cannot display the webpage". More information says: Internet connectivity has been lost. The website is temporarily unavailable. The Domain Name Server (DNS) is not reachable. The Domain Name Server (DNS) does not have a listing for the website's domain. If this is an HTTPS (secure) address, click Tools, click Internet Options, click Advanced, and check to be sure the SSL and TLS protocols are enabled under the security section. Diagnose Connection problems says: Windows cannot find the host name "download.microsoft.com" using DNS Bear with me while i expand on the problem: It all started when i tried to download Windows XP mode for my Windows 7 machine. I went to the virtual PC site, then thru the motions of Windows Genuine Advantage which validated ok, but when it redirects to grab the file just times out with above error. (NB: i also tried with the latest Chrome and Firefox but no use due to the Genuine Advantage stuff, so i decided to stick with IE). I am behind an ADSL2+ modem router connecting via wireless (Win 7 Pro laptop); so i hop over to the desktop connected via ethernet (Vista Business), and same result; begin to think site download.microsoft.com site is down. So i give it a break an read up on EDNS, flushing the cache, hosts file, etc... Try again an hour later on the Win 7 machine, still no go; so i turn off the Win 7 (software) firewall, and lo and behold, i can connect and grab any files from download.microsoft.com; (...nice, so we have a Micro$0ft firewall preventing access to a Micro$0ft website, no wonder my auto-updates kept failing but that's another story). But i still am not happy that the desktop connected via ethernet still cannot get to download.microsoft.com, even though i turned off all firewalls, defenders, anti-virus, etc. What is so special / specific about the url download.microsoft.com, any other site is ok, including www.microsoft.com. Any networking guru know what's REALLY going on, and how can i get the desktop to connect? Ping download.microsoft.com - Ping request could not find host download.microsoft.com. Please check the name and try again. Ping google.com or even www.microsoft.com works gives me an IP address. NB: On the wireless laptop ping download.microsoft.com works, i get xxxx.ms.akamai.net [202.7.177.33].

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  • Apache2 & .htaccess : Apache ignoring AccessFile

    - by Elyx0
    Hi there here is my server configuration: DEBIAN 32Bits / PHP 5 / Apache Server version: Apache/2.2.3 - Server built: Mar 22 2008 09:29:10 The AccessFiles : grep -ni AccessFileName * apache2.conf:134:AccessFileName .htaccess apache2.conf:667:AccessFileName .httpdoverride All the AllowOverride statements in my apache2/ folder. mods-available/userdir.conf:6: AllowOverride Indexes AuthConfig Limit mods-available/userdir.conf:16: AllowOverride FileInfo AuthConfig Limit mods-enabled/userdir.conf:6: AllowOverride Indexes AuthConfig Limit mods-enabled/userdir.conf:16: AllowOverride FileInfo AuthConfig Limit sites-enabled/default:8: AllowOverride All sites-enabled/default:14: AllowOverride All sites-enabled/default:19: AllowOverride All sites-enabled/default:24: AllowOverride All sites-enabled/default:42: AllowOverride All The sites-enabled/default file : 1 <VirtualHost *> 2 ServerAdmin [email protected] 3 ServerName mysite.com 4 ServerAlias mysite.com 5 DocumentRoot /var/www/mysite.com/ 6 <Directory /> 7 Options FollowSymLinks 8 AllowOverride All 9 Order Deny,Allow 10 Deny from all 11 </Directory> 12 <Directory /var/www/mysite.com/> 13 Options Indexes FollowSymLinks MultiViews 14 AllowOverride All 15 Order allow,deny 16 allow from all 17 </Directory> 18 <Directory /var/www/mysite.com/test/> 19 AllowOverride All 20 </Directory> 21 22 ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ 23 <Directory "/usr/lib/cgi-bin"> 24 AllowOverride All 25 Options ExecCGI -MultiViews +SymLinksIfOwnerMatch 26 Order allow,deny 27 Allow from all 28 </Directory> 29 30 ErrorLog /var/log/apache2/error.log 31 32 # Possible values include: debug, info, notice, warn, error, crit, 33 # alert, emerg. 34 LogLevel warn 35 36 CustomLog /var/log/apache2/access.log combined 37 ServerSignature Off 38 39 Alias /doc/ "/usr/share/doc/" 40 <Directory "/usr/share/doc/"> 41 Options Indexes MultiViews FollowSymLinks 42 AllowOverride All 43 Order deny,allow 44 Deny from all 45 Allow from 127.0.0.0/255.0.0.0 ::1/128 46 </Directory> 47 48 49 50 51 52 53 54 </VirtualHost> If i change any Allow from all in Deny from all , it works whenever i put it. I've got one .htaccess at /mysite.com/.htaccess & one at /mysite.com/test/.htaccess with: Order Deny,Allow Deny from all Neither of them work i can still see my website. I've got mod_rewrite enabled but i don't think it does anything here. I've tried almost everything :/ It works on my local environnement (MAMP) but fails when on my Debian server.

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