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  • internet connection occasionally stops, but can still ping .com sites

    - by rj
    hi, every half hour or so, for 1-2 minutes my browser will stop navigating to sites, "waiting for ... to respond.." within 2 minutes i will be able to connect to sites and browse like normal again. weird thing is, while i cannot connect to sites, i get ping replies from any .com i type in. this happens on my home wireless network, using FF and IE on a win7 desktop AND FF on an ubuntu laptop the network is wpa2 secured, these are the only connections.

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  • Unable to ping to outside network from behind a Linux router

    - by Supratik
    Hi My system is behind a Linux firewall, where eth0 is connected to internet and eth1 is connected to my LAN. The issue is I am not able to ping to outside my network. The iptables rule I have used here as below. iptables -t nat -A POSTROUTING -s 192.168.1.0/24 -p icmp -j SNAT --to-source $PUBLICIP Please correct me if I am doing anything wrong here. Warm Regards Supratik

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  • Gentoo box can't cURL or ping after restarting net.eth1

    - by Curlybraces
    Hi all, the following is completely baffling me. We currently have a gentoo box which acts as our LAMP, DNS, DHCP server. This is assigned a static IP on the network. This server is connected directly to the internet via a BT BusinessHub Router. The server is also connected to a patch panel/switch port which connects the remaining office (around 10 PC's) to the server. Everything has been plain sailing until the other day when the server was restarted. For some reason now only portions of network accessibility is available depending on which ethernet device was last restarted. Restarting net.eth0 allows the office server to cURL, ping, etc but stops all networked PC's from accessing the internet. Then restarting net.eth1 restores all internet to the network but stops the server from curling, pinging, etc again. However, even when the server can't ping, curl, etc, I can still remote SSH and remote MySQL connect from the server command line to other external servers that we own. Here's my route map (router is 192.168.1.254): Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo 0.0.0.0 192.168.1.254 0.0.0.0 UG 0 0 0 eth1 Here's my /etc/conf.d/net: iface_eth0="192.168.1.99 broadcast 192.168.1.255 netmask 255.255.255.0" iface_eth1="dhcp" None of the above have ever been changed however. Things have just ceased to operate correctly, which makes me think it's a freshly added Iptables rule. Here's the Iptables Filter table: Chain INPUT (policy ACCEPT) target prot opt source destination DROP tcp -- ##.##.##.## anywhere tcp dpt:ssh ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED ACCEPT all -- anywhere anywhere ACCEPT tcp -- anywhere anywhere tcp dpt:2199 ACCEPT tcp -- anywhere anywhere tcp dpt:3199 ACCEPT tcp -- ##.###.###.## anywhere tcp dpt:http ACCEPT tcp -- ###.###.##.## anywhere tcp dpt:2199 ACCEPT tcp -- ##.###.###.### anywhere tcp dpt:http ACCEPT tcp -- ##.###.##.## anywhere tcp dpt:http ACCEPT tcp -- ##.###.###.### anywhere tcp dpt:3128 ACCEPT udp -- ##.###.###.### anywhere udp dpt:3128 ACCEPT tcp -- ##.###.###.### anywhere tcp dpt:http ACCEPT tcp -- ##.###.###.### anywhere tcp dpt:https Chain FORWARD (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere ##.###.###.## DROP all -- anywhere ##.###.###.## ACCEPT all -- anywhere anywhere state NEW,ESTABLISHED Chain OUTPUT (policy ACCEPT) target prot opt source destination ACCEPT udp -- anywhere anywhere udp spt:2199 ACCEPT udp -- anywhere anywhere udp spt:4817 ACCEPT udp -- anywhere anywhere udp spt:4819 ACCEPT udp -- anywhere anywhere udp spt:3199 Help gratefully appreciated.

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  • VPN says connected but cannot ping tunnel ip

    - by Owl
    I have a VPN set up on a Symantec Gateway 320 and the status of the VPN is connected but the feature it provides is not working which means it is not actually connected..The only way to test it other than trying to use it in the program that utilizes it is to ping the remote subnet IP we use. mask numbers match, no settings have been changed it just stopped working.

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  • Ping script with loop and save in a txt

    - by matthias
    Hello, i try to make an Ping script with vbs. I need a Script, that ping (no ping limit, the program will run all the time) a computername in the network every 2 seconds and save the results in a txt file. For Example: 06/08/2010 - 13:53:22 | The Computer "..." is online 06/08/2010 - 13:53:24 | The Computer "..." is offline Now i try a little bit: strComputer = "TestPC" Set objPing = GetObject("winmgmts:{impersonationLevel=impersonate}")._ ExecQuery("select * from Win32_PingStatus where address = '"_ & strComputer & "'") For Each objStatus in objPing If IsNull(objStatus.StatusCode) Or objStatus.StatusCode <> 0 Then .......... Next And than i don't know how to make it. (I'm new with vbs :-)) I hope some one can help me. Greeting, matthias

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  • Socket ping-pong performance

    - by Kamil_H
    I have written two simple programs (tried it in C++ and C#). This is pseudo code: -------- Client --------------- for(int i = 0; i < 200.000; i++) { socket_send("ping") socket_receive(buff) } --------- Server ------------- while(1) { socket_receive(buff) socket_send("pong") } I tried it on Windows. Execution time of client is about 45 seconds. Can somebody explain me why this takes so long? I understand that if there were real network connection between client and server the time of one 'ping-pong' would be: generate_ping + send_via_network + generate_pong + send_via_network but here everything is done in 'local' mode. Is there any way to make this inter process ping-pong faster using network sockets (I'm not asking about shared memory for example :) )

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  • Build SUM based daily record

    - by ximarin
    I have a problem building an aggregate function. Here's my problem: I have a table like this id action day isSum difference 1 ping 2012-01-01 1 500 (this is the sum of the differences from last year) 2 ping 2012-01-01 0 -2 3 ping 2012-01-02 0 1 4 ping 2012-01-03 0 -4 5 ping 2012-01-04 0 -2 6 ping 2012-01-05 0 3 7 ping 2012-01-06 0 2 8 ping 2012-01-01 1 0 (this is the sum of the differences from last year, now for pong) 9 pong 2012-01-01 0 -5 10 pong 2012-01-02 0 2 11 pong 2012-01-03 0 -2 12 pong 2012-01-04 0 -8 13 pong 2012-01-05 0 3 14 pong 2012-01-06 0 4 I now need to select the action, day and the summarized difference since 01-01 for every day, so that my result looks like this action day total ping 2012-01-01 498 ping 2012-01-02 499 ping 2012-01-03 495 ping 2012-01-04 493 ping 2012-01-05 496 ping 2012-01-06 498 pong 2012-01-01 - 5 pong 2012-01-02 - 3 pong 2012-01-03 - 5 pong 2012-01-04 -13 pong 2012-01-05 -10 pong 2012-01-06 - 6 How can I do this? there a are a lot of datasets (~1 million), so the query needs to be pretty cheap. I don't know how the use sum to get daily sums for daily records depending on the action-column.

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  • Hanging of host network connections when starting KVM guest on bridge

    - by Chris Phillips
    Hi, I've a KVM system upon which I'm running a network bridge directly between all VM's and a bond0 (eth0, eth1) on the host OS. As such, all machines are presented on the same subnet, available outside of the box. The bond is doing mode 1 active / passive, with an arp_ip_target set to the default gateway, which has caused some issues in itself, but I can't see the bond configs mattering here myself. I'm seeing odd things most times when I stop and start a guest on the platform, in that on the host I lose network connectivity (icmp, ssh) for about 30 seconds. I don't lose connectivity on the other already running VM's though... they can always ping the default GW, but the host can't. I say "about 30 seconds" but from some tests it actually seems to be 28 seconds usually (or at least, I lose 28 pings...) and I'm wondering if this somehow relates to the bridge config. I'm not running STP on the bridge at all, and the forwarding delay is set to 1 second, path cost on the bond0 lowered to 10 and port priority of bond0 also lowered to 1. As such I don't think that the bridge should ever be able to think that bond0 is not connected just fine (as continued guest connectivity implies) yet the IP of the host, which is on the bridge device (... could that matter?? ) becomes unreachable. I'm fairly sure it's about the bridged networking, but at the same time as this happens when a VM is started there are clearly loads of other things also happening so maybe I'm way off the mark. Lack of connectivity: # ping 10.20.11.254 PING 10.20.11.254 (10.20.11.254) 56(84) bytes of data. 64 bytes from 10.20.11.254: icmp_seq=1 ttl=255 time=0.921 ms 64 bytes from 10.20.11.254: icmp_seq=2 ttl=255 time=0.541 ms type=1700 audit(1293462808.589:325): dev=vnet6 prom=256 old_prom=0 auid=42949672 95 ses=4294967295 type=1700 audit(1293462808.604:326): dev=vnet7 prom=256 old_prom=0 auid=42949672 95 ses=4294967295 type=1700 audit(1293462808.618:327): dev=vnet8 prom=256 old_prom=0 auid=42949672 95 ses=4294967295 kvm: 14116: cpu0 unimplemented perfctr wrmsr: 0x186 data 0x130079 kvm: 14116: cpu0 unimplemented perfctr wrmsr: 0xc1 data 0xffdd694a kvm: 14116: cpu0 unimplemented perfctr wrmsr: 0x186 data 0x530079 64 bytes from 10.20.11.254: icmp_seq=30 ttl=255 time=0.514 ms 64 bytes from 10.20.11.254: icmp_seq=31 ttl=255 time=0.551 ms 64 bytes from 10.20.11.254: icmp_seq=32 ttl=255 time=0.437 ms 64 bytes from 10.20.11.254: icmp_seq=33 ttl=255 time=0.392 ms brctl output of relevant bridge: # brctl showstp brdev brdev bridge id 8000.b2e1378d1396 designated root 8000.b2e1378d1396 root port 0 path cost 0 max age 19.99 bridge max age 19.99 hello time 1.99 bridge hello time 1.99 forward delay 0.99 bridge forward delay 0.99 ageing time 299.95 hello timer 0.50 tcn timer 0.00 topology change timer 0.00 gc timer 0.04 flags vnet5 (3) port id 8003 state forwarding designated root 8000.b2e1378d1396 path cost 100 designated bridge 8000.b2e1378d1396 message age timer 0.00 designated port 8003 forward delay timer 0.00 designated cost 0 hold timer 0.00 flags vnet0 (2) port id 8002 state forwarding designated root 8000.b2e1378d1396 path cost 100 designated bridge 8000.b2e1378d1396 message age timer 0.00 designated port 8002 forward delay timer 0.00 designated cost 0 hold timer 0.00 flags bond0 (1) port id 0001 state forwarding designated root 8000.b2e1378d1396 path cost 10 designated bridge 8000.b2e1378d1396 message age timer 0.00 designated port 0001 forward delay timer 0.00 designated cost 0 hold timer 0.00 flags I do see the new port listed as learning, but in line with the forward delay, only for 1 or 2 seconds when polling the brctl output on a loop. All pointers, tips or stabs in the dark appreciated.

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  • i cant ping to my DMZ zone from the local inside PC

    - by Big Denzel
    HI everybody. Can anyone please help me on the following issue. I got a Cisco Asa 5520 configured at my network. I cant ping to my DMZ interface from a local inside network PC. so the only way a ping the DMZ is right from the Cisco ASA firewall, there i can pint to all 3 interfaces, Inside, Outside and DMZ,,,, But no PC from the Inside Network can access the DMZ. Can please any one help? I thank you all in advance Bellow is my Cisco ASA 5520 Firewall show run; ASA-FW# sh run : Saved : ASA Version 7.0(8) ! hostname ASA-FW enable password encrypted passwd encrypted names dns-guard ! interface GigabitEthernet0/0 description "Link-To-GW-Router" nameif outside security-level 0 ip address 41.223.156.109 255.255.255.248 ! interface GigabitEthernet0/1 description "Link-To-Local-LAN" nameif inside security-level 100 ip address 10.1.4.1 255.255.252.0 ! interface GigabitEthernet0/2 description "Link-To-DMZ" nameif dmz security-level 50 ip address 172.16.16.1 255.255.255.0 ! interface GigabitEthernet0/3 shutdown no nameif no security-level no ip address ! interface Management0/0 description "Local-Management-Interface" no nameif no security-level ip address 192.168.192.1 255.255.255.0 ! ftp mode passive access-list OUT-TO-DMZ extended permit tcp any host 41.223.156.107 eq smtp access-list OUT-TO-DMZ extended permit tcp any host 41.223.156.106 eq www access-list OUT-TO-DMZ extended permit icmp any any log access-list OUT-TO-DMZ extended deny ip any any access-list inside extended permit tcp any any eq pop3 access-list inside extended permit tcp any any eq smtp access-list inside extended permit tcp any any eq ssh access-list inside extended permit tcp any any eq telnet access-list inside extended permit tcp any any eq https access-list inside extended permit udp any any eq domain access-list inside extended permit tcp any any eq domain access-list inside extended permit tcp any any eq www access-list inside extended permit ip any any access-list inside extended permit icmp any any access-list dmz extended permit ip any any access-list dmz extended permit icmp any any access-list cap extended permit ip 10.1.4.0 255.255.252.0 172.16.16.0 255.255.25 5.0 access-list cap extended permit ip 172.16.16.0 255.255.255.0 10.1.4.0 255.255.25 2.0 no pager logging enable logging buffer-size 5000 logging monitor warnings logging trap warnings mtu outside 1500 mtu inside 1500 mtu dmz 1500 no failover asdm image disk0:/asdm-508.bin no asdm history enable arp timeout 14400 global (outside) 1 interface nat (inside) 1 0.0.0.0 0.0.0.0 static (dmz,outside) tcp 41.223.156.106 www 172.16.16.80 www netmask 255.255.255 .255 static (dmz,outside) tcp 41.223.156.107 smtp 172.16.16.25 smtp netmask 255.255.2 55.255 static (inside,dmz) 10.1.0.0 10.1.16.0 netmask 255.255.252.0 access-group OUT-TO-DMZ in interface outside access-group inside in interface inside access-group dmz in interface dmz route outside 0.0.0.0 0.0.0.0 41.223.156.108 1 timeout xlate 3:00:00 timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02 timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 timeout mgcp-pat 0:05:00 sip 0:30:00 sip_media 0:02:00 timeout uauth 0:05:00 absolute http server enable http 10.1.4.0 255.255.252.0 inside no snmp-server location no snmp-server contact snmp-server enable traps snmp authentication linkup linkdown coldstart crypto ipsec security-association lifetime seconds 28800 crypto ipsec security-association lifetime kilobytes 4608000 telnet timeout 5 ssh timeout 5 console timeout 0 management-access inside ! ! match default-inspection-traffic ! ! policy-map global_policy class inspection_default inspect dns maximum-length 512 inspect ftp inspect h323 h225 inspect h323 ras inspect netbios inspect rsh inspect rtsp inspect skinny inspect esmtp inspect sqlnet inspect sunrpc inspect tftp inspect sip inspect xdmcp ! service-policy global_policy global Cryptochecksum: : end ASA-FW# Please Help. Big Denzel

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  • Nagios check_host_alive and check_ping not showing host as down

    - by Kyle
    I am using the check_host_alive command to send 5 packets every minute to all my routers at remote locations. I noticed today I received a notification from The AT&T Global Client Support Center that a router was down (which can take 5-30 minutes to send these notices out) and never received a notice from Nagios. I went onto Nagios and it is was showing the host as alive with a latency of 0ms. This tells me it is seeing the automated response from my router in the data center that, "TTL expired in transit" as a reply from the remote router. Is there anyway for me to tell nagios to check where the reply is comming from? I feel like other people have to of had this issue... I tested it with the check_ping command and it produced the same results. I have the command defined has %hostname% and the proper IP in the host definition, and it works fine for telling me the latency is high. Any ideas are welcome, I have already exercised my Google skills with no results. EDIT: root@IM-UBTU:/# /usr/local/nagios/libexec/check_ping -H 192.168.250.1 -w 100.0,10% -c 200.0,20% -vvv CMD: /bin/ping -n -U -w 10 -c 5 192.168.250.1 Output: PING 192.168.250.1 (192.168.250.1) 56(84) bytes of data. Output: From 10.69.10.2 icmp_seq=1 Time to live exceeded It knows something is wrong why doesn't it give me a warning?

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  • Cannot access virtual machine via ping from the physical host machine

    - by Kenni
    I'm installing a FreeBSD Server on VirtualBox. I set up the IP address (192.168.10.5) for the virtual server to run a mail server and the host computer(Windows 7) with 192.168.10.184. The two machines cannot communicate or connect to each other. I cannot ping from the virtual machine to the host and vice versa. The host machine connects to a LAN. I want the mail server to run frm a VMachine. I think it's a problem with the network configuration of the virtual machine.

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  • Can't ping other machines in my network

    - by judahgabriel
    I've got 3 machines on my network, all running Windows 7. None of them can ping each other, can't see each other on the network, can't see shares, can't remote desktop, can't see any homegroups. They are all on the same workgroup. They are all connected to the same wireless, WPA2 secured network. They all worked together nicely until I added a password to my wireless network. After that, and after reconnecting all the machines to the password-protected network, they can't see each other. Any ideas what could be wrong?

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  • Can't ping other machines at Linux VPN PPTP server's local lan from outside

    - by Marco Sanchez
    Before anything else, hello guys, this is the first time I ask for something here so I hope someone can give me a hand, please look at the following network diagram: --------------------------------------------------------------- VPN Server Webserver (SuSE SLES11) | | | ------- VPN LAN -------- | Router with Unique IP (With Port Forwarding rules set and VPN through enabled) | PPTP connection over Internet | Workstation (PC or Laptop with Windows) --------------------------------------------------------------- So the idea is for the workstation to connect to the PPTP Server and then be able to access a Web Application on the Webserver, right now I have the PPTP server configured and the VPN works, I can connect to the SLES11 server with no problems from the workstation and I can ping it and everything works fine but if I try to ping the Webserver from the workstation, I can't reach it, I'm making a mistake somewhere but I don't see where, please note that I'm not a network expert and thus I'd greatly appreciate some specific guidance. Here is some info related to the IPs --------------------------------------------------------------- *** SLES11 VPN Server has 2 Network cards: -- eth0 (Internal Network) IP: 192.168.210.5 MASK: 255.55.255.0 -- eth1 (External Network) IP: 192.168.1.105 MASK: 255.55.255.0 *** Webserver has 1 network card -- eth0 (Internal Network) IP: 192.168.210.221 MASK: 255.55.255.0 *** Workstation -- IP info once connection has been established to the VPN PPP adapter Test VPN Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Test VPN Connection Physical Address. . . . . . . . . : DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes IPv4 Address. . . . . . . . . . . : 192.168.210.110(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.255 Default Gateway . . . . . . . . . : 0.0.0.0 DNS Servers . . . . . . . . . . . : 189.209.208.181 (Defined as part of the PPTP Server options config script) 189.209.127.244 Primary WINS Server . . . . . . . : 192.168.210.220 (Defined as part of the PPTP Server options config script) NetBIOS over Tcpip. . . . . . . . : Enabled --------------------------------------------------------------- I also defined the following within IP tables: ------------------------------------------------------------- iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE iptables -A INPUT -i eth0 -p tcp --dport 1723 -j ACCEPT iptables -A INPUT -i eth0 -p gre -j ACCEPT ------------------------------------------------------------- If you need any piece of information from the PPTP server scripts please let me know, the thing is that I can actually connect to the VPN server and access its services and everything but after that I can't reach any other computer on that LAN. Any help would be greatly appreciated and thanks in advance

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  • Unable to ping remote server Nagios

    - by williamsowen
    We've recently set up Nagios on one of our Amazon EC2 instances to act as a monitoring server to our other instances. nrpe was installed on our staging server stager and appears to be working fine: monitoring_server~: /usr/lib/nagios/plugins/check_nrpe -H xx.xx.xx.xx -p 5666 NRPE v2.12 The issue is - when viewing the remote server stager within the Nagios admin screen - it appears to be 'DOWN'. The check_ping command reveals: monitoring_server~: /usr/lib/nagios/plugins/check_ping -H 'xx.xx.xx.xx' -w 5000,100% -c 5000,100% -p 1 PING CRITICAL - Packet loss = 100%|rta=5000.000000ms;5000.000000;5000.000000;0.000000 pl=100%;100;100;0 Can anyone provide some direction on how to get this working? Not sure what else to do

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  • Server 2003 answers ping, but wont serve http, ftp,smtp or pop3

    - by Manfred
    After reboot, my server wont respond to any incoming request until it is rebooted again. Then, about 5-6 hrs later, any website on it will return a ping, but it will not serve the page, nor will it serve ftp, pop3 or smtp requests. The System log shows W3SVC errors 1014 and 1074, which relate to an Application pool not replying; I have one phpAdmin app pool which I have stopped - it is showing a solitary website as the default App, but the server no longer serves php extensions, and I can't transfer the default website to another pool to kill the whole app pool. I would appreciate your help.

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  • Windows 7 can ping but can't see device on other subnet

    - by user192702
    I have 2 Windows 7 on 2 different subnets but 1 of them is unable to reach a NAS. The topology is as follow. Any idea why this is the case? Is there some Windows settings I need to apply? Subnet 1 - PC 1 - NAS Subnet 2 - PC 2 PC 1 is able to do the following: - Load the admin page on the browser. - Show the NAS under Windows Explorer - Network. - Access the NAS when typed in \\ in Windows Explorer. PC 2 is unable to do any of the above 3. It can however ping the NAS and get a response.

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  • Can't ping IPs for devices not part of Windows Domain

    - by GiddyUpHorsey
    I have a home network with a Trendnet wireless router and a Windows Domain. The DNS server is on a Windows 2000 Server and is configured to forward queries to DNS servers provided by the ISP. The router provides DHCP and is configured with the Windows 2000 Server as the DNS server. When I connect iPhones to the network over WiFi, the router can ping the iPhones through its browser based admin interface, but Windows machines that are part of the Windows Domain cannot. A laptop was connected to the network over WiFi that wasn't joined to the domain and it could see the iPhones. All machines either have a fixed or DHCP allocated IP on the 192.168.0.* subnet. How do I configure the DNS server or the Windows Domain so that Windows machines can see the iPhones?

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  • Server not responding to SSH and HTTP but ping works

    - by yes123
    Hello guys, I requested an hard reboot because none of ssh and http worked. Ping worked normally. Which logs should i check to understand what was the problem? Thanks! (debian 6 on lamp) Edit: my memory and swap: Mem: 4040068k total, 1114920k used, 2925148k free, 109212k buffers Swap: 1051384k total, 0k used, 1051384k free, 283820k cached 4 GB ram (and more than 1TB of HDD) The cause is from 2 days ago: look how the usage of swap goes +60% in less than 10hours My control panel reports this as top 5 memory usage process: If every apache2 process is 190MB large that sux because IF i do TOP i have 262 sleeping process most of them are apache2! My apache mpm_prefork settings are: <IfModule mpm_prefork_module> StartServers 5 MinSpareServers 5 MaxSpareServers 10 ServerLimit 1500 MaxClients 1500 MaxRequestsPerChild 2000 </IfModule> KeepAlive On MaxKeepAliveRequests 100 KeepAliveTimeout 4

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  • Dns works, can ping, but cannot load web pages in browser

    - by user1224595
    Yesterday I changed routers, and my desktop computer started acting up. I could ping websites, and nslookup was able to resolve names to addresses, but neither chrome, firefox, nor ie could load any webpages. None of my other computers connected to the same wireless router have any problems. I connect my desktop to the router through a cheap wifi dongle. I did a wireshark capture of the browser request, and I have uploaded the pcap here. https://drive.google.com/file/d/0B7AsPdhWc-SwbTV0bUJLQXo4UUE/edit?usp=sharing One strange thing I noticed was the spamming of ssdp packets. I am not super familiar with networking, but it seems that it is not a problem with the router, as dns works, and so does dhcp (the desktop is assigned an address correctly). Any help would be appreciated.

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  • Ping reply not getting to LAN machines but getting in Linux router Gateway

    - by Kevin Parker
    I have configured Ubuntu 12.04 as Gateway machine.its having two interfaces eth0 with ip 192.168.122.39(Static) and eth1 connected to modem with ip address 192.168.2.3(through DHCP). ip-forwarding is enabled in router box. Client machine is configured as: ip address 192.168.122.5 and gateway 192.168.122.39 Client machines can ping router box(192.168.122.39).but when pinged 8.8.8.8 reply is not reaching Client machines but in the tcpdump output on gateway i can see echo request for 8.8.8.8 but never echo reply.Is this because of 122.5 not forwarding request to 2.0 network.Can u please help me in fixing this.

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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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  • A "tinkered" PC can ping by IP, not by hostname. How to fix?

    - by aitchnyu
    Like this: root@tis-server:~# ping www.google.com ping: unknown host www.google.com root@tis-server:~# ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data. 64 bytes from 8.8.8.8: icmp_req=1 ttl=55 time=50.3 ms 64 bytes from 8.8.8.8: icmp_req=2 ttl=55 time=65.4 ms It was tinkered by somebody else and I (and him!) cant trace his actions. The graphical connection manager also refuses to work thanks to the tinkering. It also makes route add default gw 192.168.0.1 necessary for each reboot to atleast ping by IP. How do I fix this? It is Ubuntu 11.10 As requested: Output of ifconfig: eth0 Link encap:Ethernet HWaddr 48:5b:39:ae:21:98 inet addr:192.168.0.100 Bcast:0.0.0.0 Mask:255.255.255.0 inet6 addr: fe80::4a5b:39ff:feae:2198/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:13194 errors:0 dropped:0 overruns:0 frame:0 TX packets:5156 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1420596 (1.4 MB) TX bytes:827295 (827.2 KB) Interrupt:42 Base address:0x2000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:4817 errors:0 dropped:0 overruns:0 frame:0 TX packets:4817 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:377732 (377.7 KB) TX bytes:377732 (377.7 KB) Output of resolv.conf: Output of /etc/network/interfaces: GNU nano 2.2.6 File: /etc/network/interfaces auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 192.168.0.100 netmask 255.255.255.0

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