Can Ping But Cannot Go In
Jun 6, 2008
My server DC technician change the cable to another switch in another rack. all in sudden, my server went 'offline'.
the weird thing is,
I can ping the server IP
When I plug my KVM,
I can ping google.com from my server
But when I lynx google.com, it keep saying
HTTP requests sent; waiting for response._
When I open my putty and SSH, it keep waiting.
When I try to ssh from another server, it keep waiting
$ ssh school@xxx.xxx.xxx.xx
[nothing happen]
$ ping xxx.xxx.xxx.xx
PING xxx.xxx.xxx.xx (xxx.xxx.xxx.xx) 56(84) bytes of data.
64 bytes from xxx.xxx.xxx.xx: icmp_seq=1 ttl=63 time=1.10 ms
64 bytes from xxx.xxx.xxx.xx: icmp_seq=2 ttl=63 time=0.864 ms
64 bytes from xxx.xxx.xxx.xx: icmp_seq=3 ttl=63 time=0.854 ms
- I can ping my server from MS DOS
- I can ping my server from Iptools.com
- I can ping my server from another server
But..
- I cannot ssh into my server
- I cannot ssh into my server from another server
Inside my server..
- I can ping google.com, yahoo.com, other servers
- But I cannot lynx and open all websites
When I restart network, it shows [refer attachment] captured from my KVM
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Nov 2, 2008
15ms ping vs 40ms ping vs 170ms ping
Which you think is still acceptable for a website?
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Oct 23, 2008
PING
Whats that?
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Feb 5, 2007
after my server down, i ask for reboot then the server up again.
but i cant access SSH via my main ip, but i can access SSH via second ip. when i ping main ip, all is request time, but my second ip can ping.
ok main ip cannot use, so i use second ip the main problem come i cant do yum update kernel, will show this error
Quote:
Setting up Update Process
Setting up repositories
Cannot find a valid baseurl for repo: update
Error: Cannot find a valid baseurl for repo: update
when i try run socks5 proxy in my server, it running, but when i use it for my personal pc, the socks5 it not run....just show proxy is offline.
when i do wget some direct links
it always show, but never download
Quote:
[root@xxxx ~]# wget ftp://ftp.is.co.za/mirror/centos/4.4...4E.12.i386.rpm
--11:39:24-- ftp://ftp.is.co.za/mirror/centos/4.4...4E.12.i386.rpm
=> `squid-2.5.STABLE6-3.4E.12.i386.rpm'
Resolving ftp.is.co.za...
so i try to go check resolv.conf, but don have problem, my other 2 same server also dont have problem with this dns server.
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Jan 13, 2007
I just moved from PowerVPS to EuroVPS, being located in Europe myself, and was of course hoping for much better ping times. Also EuroVPS advertise themselves with a 30ms ping to most of Europe.
Anyway after my VPS was installed I compared the pings:EuroVPS (85.17.48.162) average ping: 335ms
PowerVPS (69.65.106.19) average ping: 129ms
335ms is of course ridiculously high, and after writing them a support ticket they told me it's probably a latency problem with my ISP
Can you please post the ping you get for 85.17.48.162 (preferably people located in Europe)?
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Mar 25, 2009
I have configured Nagios on my network 10+ Servers (Linux+Windows) now when i check through http://localhost/nagios everything is ok but only ping command is giving following message :-
Unknown
bin/ping -n -U -w 10 -c 5 x.x.x.x
CRITICAL - Could not interpret output from ping command
and mail me "server down " message
So what is the issue ?
I am able to run this command through command line
./check_ping -H {server} -w 100.0,20% -c 500,50% -p 5
PING OK - Packet loss = 0%
./check_ping -H x.x.x.x -w 300.0,80% -c 500.0,100% -p 5
PING OK - Packet loss = 0%
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Jul 13, 2008
I'm running my own OpenVZ server with a few VPS's running on it and have a small network issue.
I can't ping any VE from the HN. All the other networking is working ok (strangely I can ping the HN from the VE) apart from this. It's a simple setup with one network card connected to the internet.
OpenVZ the latest stable version running on CentOS 5.2
I'm pretty sure it's not a firewall problem but is something to do with arp or routing and one of the settings in sysctl.conf
Has anyone else seen this?
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Feb 10, 2009
Does it matter?
I did a few tests
Pinging lunarpages.com [74.50.4.210] with 32 bytes of data:
Average = 191ms
Pinging hostmonster.com [74.220.195.150] with 32 bytes of data:
Average = 191ms
Pinging godaddy.com [97.74.104.201] with 32 bytes of data:
Average = 175ms
Pinging rackspace.com [72.32.191.88] with 32 bytes of data:
Average = 150ms
Pinging siteground.com [209.85.102.36] with 32 bytes of data:
Average = 148ms
Pinging hostgator.com [74.54.219.185] with 32 bytes of data:
Average = 147ms
Pinging ipowerweb.com [66.96.130.200] with 32 bytes of data:
Average = 113ms
The pages load really fast @ ipowerweb
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May 5, 2009
i've only ever used pings to test if a host is up or down.
But what other information am i looking for in ping tests. For e.g., the time in ms the TTL etc etc?
How can i test pinging my server from different locations around the world?
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Jul 8, 2008
i install one xen guest ( centos5)
i run yum update and result is :
-bash-3.1# yum update
Loading "installonlyn" plugin
Setting up Update Process
Setting up repositories
Could not retrieve mirrorlist http://mirrorlist.centos.org/?releas...86&repo=extras error was
[Errno 4] IOError: <urlopen error (-3, 'Temporary failure in name resolution')>
Error: Cannot find a valid baseurl for repo: extras
i use of middle config :
/etc/sysconfig/network-scripts/ifcfg-eth0 TYPE=Ethernet
DEVICE=eth0
BOOTPROTO=static
BROADCAST=192.168.0.255
IPADDR=192.168.0.13
IPV6ADDR=
IPV6PREFIX=
NETMASK=255.255.255.0
NETWORK=192.168.0.0
ONBOOT=yes /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=myhost.l3i.ca
GATEWAY=192.168.0.1 /etc/resolv.conf (DNS resolver)
nameserver 4.2.2.1
nameserver 4.2.2.2
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Jul 23, 2008
My sites are up when I go to http and there is no slowdown but my monitors (panopta and pingdom) say that there is an outage in ping (only in ping, http is up). I tried pinging the server and there are packet loss up to 100% but the site is still up. I also used other online pinging tools (all-nettools.com, dnsstuff.com, etc.) and host unreachable.
I tried contacting the provider but they say there are no network problem at this time. So I found this other site that's also hosted on the same provider and I can access their site but fails on ping.
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Jul 26, 2008
My server ping keeps disconnecting
However my ssh & website is smooth running!
When i type "service iptables stop", the ping runs just smoothly.
I have CSF installed in the server, like any other server using default configurations. I believe it has something to do with selinux? (or not?)
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Oct 26, 2008
i think 216.245.208.x and 216.245.215.x DOWN, but limestonenetworks tell me :"problems well outside of our network, and I would highly suggest contacting your ISP for support on this matter" ....
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May 27, 2007
Must an IP address have to be pingable for apache to be seen.
I've set up an apache server at home and I noticed that if I block ping requests, no one can see i externally.
If I enable ping requests people can visit my site/server.
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Mar 11, 2007
I have 2 CPanel servers. I wanted to transfer multiple accounts via WHM but it gives me error that I cannot SSH into the other server.
I tried to ping the 2nd server from 1st server and it gives me:
root@s [~]# ping xxx.xxx.xxx.7
PING xxx.xxx.xxx.7 (xxx.xxx.xxx.7) 56(84) bytes of data.
ping: sendmsg: Operation not permitted
ping: sendmsg: Operation not permitted
ping: sendmsg: Operation not permitted
ping: sendmsg: Operation not permitted
cping: sendmsg: Operation not permitted
I added both server IP into allowed list inside my APF firewall on each server as well.
I rebooted both server earlier before, but it is still not solving my problem.
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Jul 25, 2007
Can I have some of you ping 24fans.net and let me know what your results are? Also where you're located would be good.
My ISP is being crappy and my dsl line is basically down ever few minutes. They're supposed to fix it tomorrow.
My current results are:
Reply from 70.84.145.91: bytes=32 time=66ms TTL=51
Reply from 70.84.145.91: bytes=32 time=59ms TTL=51
Reply from 70.84.145.91: bytes=32 time=65ms TTL=51
Reply from 70.84.145.91: bytes=32 time=58ms TTL=51
This doesn't really have anything to do with my dsl being crappy, but rather I'm just curious as to what kind of responses people are getting around the world.
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Jun 21, 2007
I have a problem with my server, that i can't not ping
Quote:
[root@server apf-0.9.6-2]# ping yahoo.com
ping: unknown host yahoo.com
But i can log in the ssh. i just installed apf, i check conf.apf to made sure there are port 80, but it still can't ping.
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Oct 7, 2009
So I'm wondering what if anything I can do to get a better ping from my 1and1 server.
It's located in Wayne, PA and my ping floats around 70ms and I'm in South Lake Tahoe, CA. I only ask because there are servers with Peer1 hosted in New York, NY that give me a ping around 20ms.
Thanks for any help or advice.
Its a Windows Server 2008 Web Box.
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Aug 20, 2009
A website,which i can't access,but i used the ping and tracert instruct. the result tell me the IP and route is right.later,a use a Proxy site to access that site,it can. who knows the reason?
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Aug 13, 2008
I installed net query tool from this site
http://virtech.org/tools/
They say in order for ping and trace to work, you must chmod those executables on the server itself to 755. Is this safe or a security risk? The odd thing is, ping and trace works fine from dnsstuff.com or any other network tool site.
What is the location of those executables?
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Aug 10, 2008
I have two servers both in a same vlan. Both may access Internet and be acceessed from Internet I setup db server and web server internal IP each as follows:
step 1: on web server:
vi /etc/sysconfig/network-scripts/ifcfg-eth0:0
add following:
DEVICE=eth0:0
BOOTPROTO=static
BROADCAST=192.168.1.255
IPADDR=192.168.1.5
NETMASK=255.255.255.248
NETWORK=192.168.1.0/24
ONBOOT=yes
TYPE=Ethernet
save and /etc/init.d/network restart
step 2: on db server:
vi /etc/sysconfig/network-scripts/ifcfg-eth0:0
add following:
DEVICE=eth0:0
BOOTPROTO=static
BROADCAST=192.168.1.255
IPADDR=192.168.1.10
NETMASK=255.255.255.248
NETWORK=192.168.1.0/24
ONBOOT=yes
TYPE=Ethernet
save and /etc/init.d/network restart
I used ifconfig to check both status, both of them are up. both of them may ping google, but when I try to ping their each other through internal IP, nothing returns.
I used command tracert to follow, found all packages were sent to Internet rather than an internal IP.
My host tells me to do it by making NAT, I have no idea on it. Anyone may help me out on how to do with NAT?
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Jul 25, 2009
Should I block ping request to my servers from WAN?
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Oct 15, 2009
I am hosting some sites with innohosting and it seems they are loading slow. This could be because of my internet so im not sure.
My ping is below. What is considered good?
64 bytes from 67.220.209.81: icmp_seq=0 ttl=39 time=87.104 ms
64 bytes from 67.220.209.81: icmp_seq=1 ttl=39 time=89.647 ms
64 bytes from 67.220.209.81: icmp_seq=2 ttl=39 time=110.035 ms
64 bytes from 67.220.209.81: icmp_seq=3 ttl=39 time=130.241 ms
64 bytes from 67.220.209.81: icmp_seq=4 ttl=39 time=139.109 ms
64 bytes from 67.220.209.81: icmp_seq=5 ttl=39 time=163.304 ms
64 bytes from 67.220.209.81: icmp_seq=6 ttl=39 time=96.559 ms
64 bytes from 67.220.209.81: icmp_seq=7 ttl=39 time=96.478 ms
64 bytes from 67.220.209.81: icmp_seq=8 ttl=39 time=103.415 ms
64 bytes from 67.220.209.81: icmp_seq=10 ttl=39 time=111.042 ms
64 bytes from 67.220.209.81: icmp_seq=11 ttl=39 time=118.234 ms
64 bytes from 67.220.209.81: icmp_seq=12 ttl=39 time=94.255 ms
64 bytes from 67.220.209.81: icmp_seq=13 ttl=39 time=86.390 ms
64 bytes from 67.220.209.81: icmp_seq=14 ttl=39 time=95.784 ms
64 bytes from 67.220.209.81: icmp_seq=15 ttl=39 time=89.193 ms
I have a lot of sites with big graphics that need to load fast.
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Jan 28, 2009
i am hosting a GunZ Server on a VPS,
i wana to open 2 servers, ( Quest / clan ) 2 names,
but, i can'T open the 2, only 1 if i opened the 2 one of them is getting for all palyers 999 ping ( Agent Error )...
well this is may caused by AE, how can i fix this?
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Apr 12, 2009
When I talked with my friends who are into computer stuff, they'd say that it is important that the provider that I am about to host my site with, has good ping response so that my site will load faster.
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Jun 10, 2009
Basically I registered with a new host. They sent me the details with obviously includes the IP address. I tested the IP address on just-ping.com and it came back with all of them having between 80% to 100% packet loss. Surely this is not normal is it? I havent moved my domain yet but it doesnt look good does it? Should I cancel?
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Feb 20, 2008
I'm getting slow server response times I've been struggling with this for quite some while.
Here is what I know so far:
1. My website divinelightingdotcom through justping returns average 60-80% packets lost for all locations but Santa Clara, which usually has 0-20% loss.
2. My VPS is in Dallas
3. My ISP is also in Dallas, yet justping their website returns 0 packets lost
4a. When I ping my site from Atlanta, the avg trip is 44 ms
4b. However, the first access of my website through a browser usually takes about 5-10 seconds to respond
4c. I assume that my customers have this same experience (if so, this is killing me on my sponsored search advertising)
5. subsequent navigation through the website is usually acceptably fast.
6. wait an hour or so, and the initial page load has 5-10 second response delay again (can be any page on the site)
7. perhaps related, WinMTR from my location in Atlanta shows an comcast IP in virginia that consistently has 20% loss. I have opened a trouble ticket with Comcast.
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Jun 17, 2008
I was on this site a while ago and someone shared a link to a site that would ping a given IP from multiple locations around the globe and give the output. Does anyone know of a site that would do this?
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Aug 14, 2008
Which DC have good ping for India,lot of us based dc have big ping value in india,any one suggest good one.
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Jul 28, 2008
for a server to run a lightweight game server. It will require about 15-20KB/sec bandwidth. Fairly low ram requirements, and very little disk requirements.
My issue is, i need it to have VERY VERY low ping rates. Users will be connecting from Europe and US. Where can i go for something that would fill these needs? I've tried Amazon EC2, but its flaky sometimes..
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Apr 11, 2008
my server is running with a static ip. while im going through this trial and error process of registering my name servers i should at least be able to ping my server from a remote computer shouldnt i? it just keeps timing out but i figured at least that much should work.
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