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• bond0:0 + define virtual IP

  - by yael

  hi all in my linux server I have the follwoing: Linux Version - RedHat-Linux- 5.3.0.0 (this linux server only only one LAN) more /etc/sysconfig/network-scripts/ifcfg-bond0:0 DEVICE=bond0:0 ONBOOT=yes BOOTPROTO=static IPADDR=10.10.10.12 NETMASK=255.255.255.0 ifconfig -a bond0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 UP BROADCAST MASTER MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) bond0:0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 inet addr:10.10.10.12 Bcast:1.1.1.255 Mask:255.255.255.0 UP BROADCAST MASTER MULTICAST MTU:1500 Metric:1 eth0 Link encap:Ethernet HWaddr 00:0E:0C:C7:F8:92 inet addr:1.1.1.1 Bcast:1.1.1.255 Mask:255.255.255.0 inet6 addr: fe80::20e:cff:fec7:f892/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:8600 errors:0 dropped:0 overruns:0 frame:0 TX packets:4764 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:717979 (701.1 KiB) TX bytes:598620 (584.5 KiB) Memory:b8820000-b8840000 my problems: why I get HWaddr 00:00:00:00:00:00 and not the real MAC address I cant ping to other server with 10.10.10.11 from my server is it posible to define bond0:0 when I have only one LAN (eth0) other info: more /etc/modprobe.conf alias eth0 e1000e alias eth1 e1000e alias eth2 e1000e alias eth3 e1000e alias scsi_hostadapter mptbase alias scsi_hostadapter1 mptsas alias scsi_hostadapter2 ata_piix alias bond0 bonding alias bond1 bonding

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• nslookup gives wrong ip for my domain

  - by Werulz

  I am having some problem in trying to setup DNS for my domain on my server. This tutorial normally works fine for me but when i tried to lookup my domain it gives the following output Server: 4.2.2.1 Address: 4.2.2.1#53 Non-authoritative answer: 119.100.79.64.in-addr.arpa name = server.leech4ever.com. Authoritative answers can be found from: The server and the address are wrong according to the tutorial Here is tutorial http://webcache.googleusercontent.com/search?q=cache:rR7Z4YU4GI0J:www.broexperts.com/2012/03/linux-dns-bind-configuration-on-centos-6-2/+broexperts+bind&cd=1&hl=en&ct=clnk&gl=mu /etc/hosts 127.0.0.1 localhost 64.79.100.119 server.leech4ever.com server /etc/resolve.conf search leech4ever.com nameserver 64.79.100.119 /etc/resolv.conf nameserver 4.2.2.1 nameserver 4.2.2.2 How to solve this problem guys.....The tutorial was flawless until i did a server restore

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• ProFTPd: Multiple Domain VirtualHosts on one IP address

  - by Badger

  I have a webserver that we are giving a consultant FTP access to. For one domain hosted on that server he needs access to a "dev" directory and for a different domain hosted on that server he needs access to a different directory. I am trying to set this up with VirtualHosts, but I am having issues. Here is the VirtualHost bit of my proftpd.conf file: <VirtualHost www.example2.com> ServerName "Example 2" DefaultRoot /var/www/example2/dev </VirtualHost> <VirtualHost www.example1.com> ServerName "Example 1" DefaultServer on DefaultRoot /var/www/example1 </VirtualHost> When I FTP to either domain I always get the first VirtualHost, even if I FTP to the second domain.

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• Apache Request IP Based Security

  - by connec

  I run an Apache server on my home system that I've made available over the internet as I'm not always at my home system. Naturally I don't want all my home server files public, so until now I've simply had: Order allow, deny Deny from all Allow from 127.0.0.1 in my core configuration and just Allow from all in the htaccess of any directories I wanted publicly viewable. However I've decided a better system would be to centralise all the access control and just require authentication (HTTP basic) for requests not to 127.0.0.1/localhost. Is this achievable with Apache/modules? If so how would I go about it? Cheers.

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• monitoring TCP/IP performance on Solaris

  - by Andy Faibishenko

  I am trying to tune a high message traffic system running on Solaris. The architecture is a large number (600) of clients which connect via TCP to a big Solaris server and then send/receive relatively small messages (.5 to 1K payload) at high rates. The goal is to minimize the latency of each message processed. I suspect that the TCP stack of the server is getting overwhelmed by all the traffic. What are some commands/metrics that I can use to confirm this, and in case this is true, what is the best way to alleviate this bottleneck?

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• configuring linux server firewall to allow acces on a certain range of IP addresses

  - by eggman20

  Hi Guys, I'm new to linux server. I'm currently trying to get an Ubuntu 10.10 server up and running for the first time and I'm using Webmin for administration. I'm stuck on the setting up the firewall. What I need to do is to ONLY allow a range of IPs (e.g 128.171.21.1 - 128.171.21.100) to access the HTTP server and Webmin. I've seen a lot of tutorials but none of them fits what I needed. Thanks in advance!

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• Seem to have banned my IP from my server

  - by Rob

  I can't seem to figure out the problem. I've checked the deny list in CSF, and even stopped it completely, as well IPTables. Somehow I'm still blocked from accessing my server. Currently I can access it from other IPs, so I'm pretty sure that's the problem (though I could be wrong, of course. I'm no expert) So any suggestions on what it might be, and how I could fix it, would be heavily appreciated.

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• bond0:0 + define virtual IP

  - by yael

  in my Linux server I have the following: Linux Version - RedHat-Linux- 5.3.0.0 (this Linux server only only one LAN) more /etc/sysconfig/network-scripts/ifcfg-bond0:0 DEVICE=bond0:0 ONBOOT=yes BOOTPROTO=static IPADDR=10.10.10.12 NETMASK=255.255.255.0 ifconfig -a bond0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 UP BROADCAST MASTER MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) bond0:0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 inet addr:10.10.10.12 Bcast:1.1.1.255 Mask:255.255.255.0 UP BROADCAST MASTER MULTICAST MTU:1500 Metric:1 eth0 Link encap:Ethernet HWaddr 00:0E:0C:C7:F8:92 inet addr:1.1.1.1 Bcast:1.1.1.255 Mask:255.255.255.0 inet6 addr: fe80::20e:cff:fec7:f892/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:8600 errors:0 dropped:0 overruns:0 frame:0 TX packets:4764 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:717979 (701.1 KiB) TX bytes:598620 (584.5 KiB) Memory:b8820000-b8840000 my problems: why I get HWaddr 00:00:00:00:00:00 and not the real MAC address I cant ping to other server with 10.10.10.11 from my server is it possible to define bond0:0 when I have only one LAN (eth0) other info: more /etc/modprobe.conf alias eth0 e1000e alias eth1 e1000e alias eth2 e1000e alias eth3 e1000e alias scsi_hostadapter mptbase alias scsi_hostadapter1 mptsas alias scsi_hostadapter2 ata_piix alias bond0 bonding alias bond1 bonding

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• configuring linux server firewall to allow acces on a certain range of IP addresses

  - by eggman20

  Hi Guys, I'm not sure if this is the right place to ask this but I'm currently trying to get an Ubuntu 10.10 server up and running for the first time and I'm using Webmin for administration. I'm stuck on the setting up the firewall. What I need to do is to ONLY allow a range of IPs (e.g 128.171.21.1 - 128.171.21.100) to access the HTTP server and Webmin. I've seen a lot of tutorials but none of them fits what I needed. Thanks in advance!

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• Can't ping Ip over bridge

  - by tmn29a

  I'm unable to ping another host over a bridge I created, I can't see the error -.- It's a remote machine running debian stable with some backports for which I want to set up DHCP on the new Subnet 172.30.xxx.xxx to be used for KVM-Guests. ifconfig : bond0 Link encap:Ethernet HWaddr e4:11:5b:d4:94:30 inet addr:10.54.2.84 Bcast:10.54.2.127 Mask:255.255.255.192 inet6 addr: fe80::e611:5bff:fed4:9430/64 Scope:Link UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1 RX packets:34277 errors:0 dropped:0 overruns:0 frame:0 TX packets:18379 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:2638709 (2.5 MiB) TX bytes:2887894 (2.7 MiB) br0 Link encap:Ethernet HWaddr f2:fc:4d:7f:15:f0 inet addr:172.30.254.66 Bcast:172.30.254.127 Mask:255.255.255.192 inet6 addr: fe80::f0fc:4dff:fe7f:15f0/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:252 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:10800 (10.5 KiB) Pings : ping -I br0 172.30.xxx.65 PING 172.30.xxx.65 (172.30.xxx.65) from 172.30.xxx.66 br0: 56(84) bytes of data. --- 172.30.xxx.65 ping statistics --- 3 packets transmitted, 0 received, 100% packet loss, time 2017ms ping -I bond0 172.30.254.65 PING 172.30.xxx.65 (172.30.xxx.65) from 10.54.2.84 bond0: 56(84) bytes of data. 64 bytes from 172.30.x.65: icmp_req=1 ttl=64 time=0.599 ms 64 bytes from 172.30.x.65: icmp_req=2 ttl=64 time=0.575 ms 64 bytes from 172.30.x.65: icmp_req=3 ttl=64 time=0.565 ms --- 172.30.x.65 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 1999ms rtt min/avg/max/mdev = 0.565/0.579/0.599/0.031 ms Route : Destination Gateway Genmask Flags Metric Ref Use Iface 172.30.x.64 * 255.255.255.192 U 0 0 0 br0 10.54.x.64 * 255.255.255.192 U 0 0 0 bond0 default 10.54.x.65 0.0.0.0 UG 0 0 0 bond0 default 172.30.x.65 0.0.0.0 UG 0 0 0 br0 The Interface : cat /etc/network/interfaces auto lo br0 iface lo inet loopback # Bonding Interface auto bond0 iface bond0 inet static address 10.54.x.84 netmask 255.255.255.192 network 10.54.x.64 gateway 10.54.x.65 slaves eth0 eth1 bond_mode active-backup bond_miimon 100 bond_downdelay 200 bond_updelay 200 iface br0 inet static bridge_ports bond0 address 172.30.x.66 broadcast 172.30.x.127 netmask 255.255.x.192 gateway 172.30.x.65 bridge_maxwait 0 If you need more info please ask. Thanks for your help !

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• HOw to enable shell login for particular user in one ip

  - by Master

  I have blocked FTP 21 port on server. NOw every connection will be via SFTP via ssh. Initially i had /etc/hosts.deny -- sshd:all But i had to remove that otherwise sftp was not working. How can i secure my shell login so that if someone login via root or userbac(root previleges) Then i need private key but not for other users Or any other to secure my system Thanks

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• Can not connect to service with my public IP, only with localhost

  - by Sanoj

  I have installed Linux Mint 8 (based on ubuntu). And I have setup a webserver on port 8098. I can connect to my webserver with http://127.0.0.1:8098, but when I try to connect to http://192.168.1.107:8098 from the same machine or another machine it doesn't work. How can I get this working? Is there any default firewall settings that I have to change?

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• DNS Update 'stuck'

  - by Postus

  I have a dedicated server with Debian and ISPconfig on it And a domain example.it I did a error while setting the dns for the first time I've tried to set it to ns1.example.it IP.IP.IP.IP myDedicnumber.kimsufi.com IP.IP.IP.IP But it got stuck it shows "Current Status: on hold" its been 7days already. I've tried contacting ovh but they just told me to set my dns to something diffrent but I can't as this operation is blocking any changes to the DNS records. Is there anything that I could do accept bug OVH?

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• Ping IP: connect: no such process

  - by Matthew

  I am trying to figure out this issue and am getting a weird error. We have two boxes which used to talk to one another on the network. Both are reachable via ssh from a separate network, which means they are able to talk to their default gateways just fine. When we try to ping from the linux machine to the linux machine, we get a bunch of timeouts. When we try to ping from the linux box back, we are getting connect: no such process. I can't seem to find much documentation on this error, though there consistently seem to be references to VPN stuff when googling for this error. The

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• Rebroadcasting videostream from IP-camera

  - by Alexander

  The problem is the following: I have a camera D-Link securicam dcs-2121 (http://www.dlink.com.sg/products/?idproduct=310) it has its own web-server and works perfectly with a few connected users, but what I want is to make a lot amount of users able to connect and watch videostream, built-in server can't get trough many connections. So I need to translate stream to any external server and broadcast from it. What software or maybe service I need to use to this effect? thanks.

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• iptables rules for DNS/Transparent proxy with ip exceptions

  - by SlimSCSI

  I am running a router (A Netgear WNDR3700 if that matters) with dd-wrt. For content filtering I am using OpenDNS. I wanted to make sure a user could not bypass OpenDNS by putting in their own name servers, so I have a rule to catch all DNS traffic. iptables -t nat -A PREROUTING -i br0 -p all --dport 53 -j DNAT --to $LAN_IP I did have one computer on the network I wanted to allow past OpenDNS filters. On that machine I manually set the name servers, and created another rule to allow it to pass iptables -t nat -I PREROUTING -i br0 -s 192.168.1.2 -j ACCEPT This worked well. Today, I installed a transparent proxy (squid) on the router and added these rules: iptables -t nat -A PREROUTING -i br0 -s $LAN_NET -d $LAN_NET -p tcp --dport 80 -j ACCEPT iptables -t nat -A PREROUTING -i br0 -s ! $PROXY_IP -p tcp --dport 80 -j DNAT --to $PROXY_IP:$PROXY_PORT iptables -t nat -I POSTROUTING -o br0 -s $LAN_NET -d $PROXY_IP -p tcp -j SNAT --to $LAN_IP iptables -I FORWARD -i br0 -o br0 -s $LAN_NET -d $PROXY_IP -p tcp --dport $PROXY_PORT -j ACCEPT This also works, however the 192.168.1.2 address does not get routed through squid. How can I have 192.168.1.2 (and maybe others in the future) by-pass the port 53 rules, but not the port 80 rules?

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• Looking for KVM switch (over IP) with good linux client [closed]

  - by B14D3

  I have some ATEN CN6000 and i1708 KVM boxes and clients for them are made for windows and java. Java clients doesnt work neither on win or linux systems(I can run them with JavaRE but they dont connect to KVM box). Client for CN6000 on windows works quite well but a have huge problems with connect to i1708 with win client. So I'm looking for some good replacement. I'm aiming to KVM with linux client. Whether there are such ? What kind of KVMs you are using and have good opinion about them?

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• Apache Conf files: If Hostname=="Web4" Then Use This IP for VirtualHost

  - by jroberts

  I am getting ready to do a "spring cleaning" on the web heads at work. I would really like to put my config files into a git repo, and use the same config files for all the web heads. This is a problem for the sites that are on port 443. Is there anyway to do an if statement or something like that inside the conf file itself? I am trying to avoid writing a script to generate the conf files. Any ideas are greatly appreciated!! Thank you! Jeff

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• win2003 server I cannot browse any ip address

  - by Abdelhadi

  On my server with Windows 2003 Server after a fault in the RAM, I can ping to all IPs but I cannot see it at My Network Places. Could you help me if there is any Windows components to be reinstalled, or any registry entries to be redefined. Or is there any other solution? Thanks

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• Apache Tomcat - Responding for IP However Not for Domain

  - by user3322152

  I have just started setting up a VPS. I installed Tomcat to deploy some test applications on. The problem I am having is the following. An 'A' record has been setup for my website's primary domain as vps.mydomain.com. This is resolving fine for SSH and TS3. When it comes to Tomcat, using vps.mydomain.com:8080 does not result in the default landing page. However, 111.222.333.444:8080 does load the default Tomcat page. I read through the manual and within the server.xml added an Alias; this however has not had any effect. Is there any trickery required in order to get Tomcat to serve my applications or is this likely to be some kind of filtering mechanism for requests placed upon me by my hosting provider?

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• Port forwarding using IP Tables

  - by Darider

  I have a server with a LAN facing address of 192.168.5.100 (eth0) and another LAN facing address of 192.168.6.6 (eth1). On this server I have a Virtualbox instance of fedora running an apache webserver (on port 8080) with a bridged interface to eth1 on the host server with address of 192.168.6.7 Users on the 192.168.6.x network can access the Webserver on the Vbox instance (192.168.6.7) with no problems. My question is what kind of iptables entries or commands should be made/executed so as to allow for users on the 192.168.5.x network to access the webserver on the vbox instance. (I'm hoping their url can be something like: http://192.168.5.100:8080)

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• Fedora 17 transparent Ethernet Bridge not forwarding IP traffic

  - by mcdoomington

  I am running on Fedora 17 with the latest ebtables and have been trying to setup a transparent bridge - using the following script, I send a ping through the bridged host and only see the requests on the bridge (among other traffic from eth0), BUT, arps and arp replies are making it through. My host is setup - Client 192.168.1.10 <-- eth0 -- eth2 192.168.1.20 Ethernet script: #!/bin/sh brctl addbr br0; brctl stp br0 on; brctl addif br0 eth0; brctl addif br0 eth2; (ifdown eth0 1>/dev/null 2>&1;); (ifdown eth2 1>/dev/null 2>&1;); ifconfig eth0 0.0.0.0 up; ifconfig eth2 0.0.0.0 up; echo "1" > /proc/sys/net/ipv4/ip_forward; ebtables -P INPUT DROP ebtables -P FORWARD DROP ebtables -P OUTPUT DROP ebtables -A FORWARD -p ipv4 -j ACCEPT ebtables -A FORWARD -p arp -j ACCEPT Any assistance would be great!

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• Why Remote Desktop Sessions show client internal IP address? [closed]

  - by Varp

  I have Windows Server 2008 r2 with static ip address on WAN interface. I connecting to the server from home from my laptop. Laptop at home is behind nat box. When i connecting to the server from home in Remote Desktop Session Manager i see in client status dialog a local ip address of client behind the nat box not WAN ip address of nat box. I suppose i must see the WAN ip address of the nat box in Remote Desktop Session Manager, isnt it?

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• Ping or accessing WAN IP from LAN results in failure on only one box

  - by ComputerUserGuy

  Morning/evening gents. I purchased a radical domain name today to set up a name for my services and to set up SSL. I configured the SSL fine and all but when I went to my website I couldn't connect. I can connect to the site with any other device in my house and my friend can connect to it as well from outside of the LAN. I am hosting the services with my computer and I can't access the service. Whenever I ping it using the command prompt I get a result of "General Failure.". It saddens me that they couldn't make a better message as it kind of brings me down. I'm not sure what's the deal here as I have all of my firewalls down and my ports are forwarded. Running Windows 7. Thanks for the assistance chaps.

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• Centos IPTables - Allow Traffic for Multiple IP Addresses

  - by compcobalt

  I know that: 211.95.79.186/24, it would allow 211.95.79.0 all the way up to 211.95.79.255. and 211.95.0.0/16, it would allow 211.95.0.0 all the way up to 211.95.255.255. and 192.168.1.30-50, it would allow 192.168.1.30 all the way up to 192.168.1.50 ?? <-- is that correct ? but how do I allow the following: 24.250.0.0 all the way up to 24.250.127.255 ? OR 119.165.128.0 all the way up to 119.165.255.255 ?

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