Ping is a mechanism to see if a remote host is reachable via an IP network

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measure server speed and deduct the network latency

I want to measure the login via htaccess to some servers (how fast is processed by the server) and I want to ignore the time lost on the newtork. So should i deduct the ping latency once or twice? Or ...
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1k views

I can't ping from my server to google.com, how can I diagnose issue?

I'm on my server and I can't ping anything outside. I tried for example google.com. How can I diagnose this issue? I can ping my localhost (ping works) This is my traceroute to google.com: ...
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6answers
949 views

ping response time

I have two sites hosted on two different data-centres. Recently one site has become very slow. The ping response from application server to DB server is not fast enough. How do I investigate the ...
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12k views

Can ping IP address and nslookup hostname but cannot ping hostname

On a windows 2003 server I can nslookup www.google.com which returns Server: localhost Address: 127.0.0.1 Non-authoritative answer: Name: www.l.google.com Addresses: 74.125.79.104, ...
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44 views

Cannot ping centos7 host

I am doing this for the first time, so I may be missing something very basic. I installed Centos 7 on a new server and have successfully gotten the connectivity working. Now I want to be able to ssh ...
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60 views

Why woud ping fail but not traceroute

For a few days now I started making the interesting observation of a machine intermittently not responding to an ICMP ping, while it still responds to an ICMP based traceroute (specifically set via ...
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2answers
2k views

Can browse, but can't ping

I am behind a corporate network. I am unable to use git, since it can't resolve server names fatal: Unable to look up someserver.org (port 9418) (No such host is known. ) I can't ping that server ...
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191 views

Did you see similar icmp ever? [closed]

ping ya.ru PING ya.ru (213.180.193.3) 56(84) bytes of data. 64 bytes from www.yandex.ru (213.180.193.3): icmp_req=1 ttl=60 time=97.6 ms 64 bytes from www.yandex.ru (213.180.193.3): icmp_req=2 ttl=60 ...
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683 views

Windows XP VMs on ESXis not pinging each other

I'm running a virual environment of this sort. There's a UCS box that has several VMs. I've setup 3 Virtual ESXi VMs and vCenter Server appliance. Using the appliance, I installed 3 WinXP VMs on the ...
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405 views

IPv6: ping6 from foreign host works, but cannot ping6 on same host [ubuntu 12.04]

I have a strange issue with ipv6 on Ubuntu 12.04. There are two hosts, directly connected to the internet. Both have assigned a /64 network. They are properly configured with a /128 endpoint each and ...
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2answers
6k views

Intel 82579LM Gbit Ethernet Controller - magic packet (WOL) right after ping is not working

I am experiencing a very annoying and mysterious behavior when sending magic packets (for Wake On LAN) shortly after pinging an Intel 82579LM GigaBit Ethernet Controller (the onboard ethernet ...
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974 views

Is it bad that latency for our internal LAN varies greatly within the 15 - 40 ms range?

I've always thought the "typical" latency for a small office wired Ethernet network would be <5 ms. However, pinging the default gateway yields an average of 14 ms, and any host is around 30 ms. ...
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411 views

My server doesn't receive responses from pings

if I SSH into my server, and I try to ping another server, I never see the responses. This seems to happen only on urls. I've been able to ping a couple ip addresses. I first noticed this problem ...
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2answers
6k views

PING: timed out, host unreachable and succes all at once

Is there any logical explanation for this output? I can understand all of the three different results, but all three in one single run of PING? Could my router be defective? I have no internet ...
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1answer
3k views

Icinga/Nagios to ping different machine on local network

I have 3 machines, all remote IPs and all of them running nsclient++ with remote and local IP addresses: 46.*.*.1/192.168.1.1 46.*.*.2/192.168.1.2 46.*.*.3/192.168.1.3 I want nagios/icinga to ...
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63 views

Measuring latency to a firewalled server

The firewall in front of this server is blocking ping requests. Is is still possible to measure latency to this system? If so, how?
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900 views

Pinging same address multiple times

I am just wondering if it is possible to ping the same ip address from the same source multiple times (ie fast enough so they get pipelined) and still get a valid result. By a valid result, I mean ...
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2answers
7k views

Configuring TMG to allow a connection through the firewall

Here's the basic outline of the problem: I'm trying to ping from 192.168.0.2 to 192.168.10.2, but the ping dies on reaching 192.168.10.1. Obviously TMG is blocking it with the firewall. :) ...
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3answers
4k views

VMWare/VirtualBox: Ping don't work in Host-Only network adapter from windows host to linux guest

Scenario: Windows host running XP SP3 (Virtual) Ubuntu Server 10.04 (fresh install, only selected "LAMP Package" option during installation. Tested on VMWare Player / VirtualBox I can ping by ip ...
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357 views

Enable PC behind router to be pinged

I've got a Windows 7 PC running a webservice accessing the internet through a standard router. I forwarded the required ports in the router accordingly and was able to use the service successfully ...
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486 views

XP - ping changes routing table?

I have got a real strange behaviour with one of my XP-Sp3 machines. Setup: A Server in the lan (192.168.5.0) proviedes access to all roadwarriors in 10.8.0.0 The DCHP has a static route for all ...
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224 views

Win 7 Netbook refuses to ping JetDirect card (all other PCs work)

I have an odd thing occuring here. From a Windows 7 netbook, I cannot ping an HP printer on the network, while all other machines (Win7/Vista) can. And the netbook can also ping everything else on the ...
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1k views

Client A can ping server S, but client B cannot

I moved the question to here from stackoverflow.com http://stackoverflow.com/questions/2917569/unable-to-ping-server-from-client-b-but-able-to-ping-from-client-a-please-help I am trying to configure ...
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608 views

Weird response from ping

I have a server called "Otto" This has an internal IP address of 10.0.10.210 We have had a power failure today, and, although the server room is protected by UPS, things haven't worked properly ...
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30k views

Can't ping certain IP's on same subnet?

Firstly all devices are ON and have an active/working network connection. Secondly the device I'm trying to ping from is pingable from the devices I'm trying to ping! Right, we have a secure VPN ...
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9k views

Issues with Mac OS X pinging

I am trying to ping to IP's and host addresses, and this is the result, I am not sure this is a error but I am attempting to use a vpn and I can't get it to work. Pinging the IP should be working but ...
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594 views

Packet Loss with Cisco 2621 Router

I'm working with a Cisco 2621 and NAT to map ip addresses to machines in my cluster. Starting yesterday, I noticed heavy packet loss (60% loss reported by ping) to one ip address mapped to three ...
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1k views

Juniper firewall - large pings for testing

Is there an way to permit ping packets larger than 1472 through a Juniper SSG520M firewall? "Ping of Death" and "Large Size ICMP Packet" protection has already been disabled under the 'Screening' ...
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424 views

VPN failure between two remote offices

I have three offices all with broadband routers feeding into Server 2003 running Routing and Remote Access that provides the clients with internet access. I have setup VPN connection between site1 ...
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1answer
36 views

Possible route, but denied?

If ISP (A) can be routed to ISP (B), and ISP (B) can be routed to ISP (C) and vice versa, then why ISP (A) and ISP (C) can't be routed through ISP (B) to each other? The packets are routed like this ...
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39 views

Arp request for a non-existing host in a local network

I'm wondering why I get the following result : if I try to access a non-existing host on my local network, for instance using the command ping, I see with the tcpdump arp command that there is every ...
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5k views

Can access website, but can't ping it, nor access via FTP

I'm having a problem connecting to a server by other way than HTTP. Connecting via FTP ends with timeout, as well as pinging: C:\Users\folmert>ping wroclaw-elektryk.pl Pinging ...
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2k views

RDP working but not able to ping and share can't be accessed through UNC [closed]

I am asking this for my live environment servers. So, kindly requested to consider this while answering.. I have 2 cases asked here. Please do number while answering. 1) I have a server which I can ...
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1answer
592 views

ping incorrectly pinging 127.0.0.1

I've got an odd DNS issue. I'm running a dual ipv4/ipv6 environment on Gentoo Linux. Pinging some sites results in ping pinging 127.0.0.1. e.g. #> ping authserver.mojang.com PING ...
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741 views

Some clients on a VPN network are not reachable

The problem of this model is that some (only some) clients cannot be reached. See the link below for more information about the model which is being described in the upcoming section. Problem ...
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27k views

Unable to ping computers via DNS domain name

I have two desktop computers and recently set up a third computer, a Windows Server 2012 box, for which I installed DNS on it and set it up as a domain controller. I was able to successfully set up ...
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3k views

Cannot ping my domain-joined server - Can only ping domain controller - host unreachable

I have a HyperV Server hosting a Domain Controller VM (192.168.1.50) and another VM (192.168.1.51) joined to this domain. I have: domain controller as DNS server forward lookup zone for the domain ...
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414 views

TCP 30 small packets per second flood connection with server

I'm testing connection with flash client and cloud server(boost::asio for software) over TCP connection. My connection with server already is really poor - 120 ms ping in average. I found when i start ...
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2k views

VMWare-ESXi server dropping packets, shaky connection

I have a few virtual servers running on a VMWare-ESXi server. One of those is a mailserver running Windows server 2003, Has been running quite well for a while now. About 4 days ago, the mailserver ...
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1answer
544 views

Why are two IPs responding to my ping?

I'm having a weird issue. On one of a mac, I noticed it was having some weird issues communicating with the server. I pinged the server, 2.0.5.90, from the terminal on the mac, and here are the ...
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3k views

DNS/Nameserver issue. Can't ping IP or domain

I get this when I ping an IP: 21:31:50.136623 IP SITE_IP > 173.194.33.4: ICMP echo request, id 14941, seq 1, length 64 21:31:51.136138 IP SITE_IP > 173.194.33.4: ICMP echo request, id 14941, ...
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132 views

eth1 and eth1:0 take different times to echo ping requests?

When I ping 2 different IPs that go to eth1 and eth1:0 on the same server, the ping time is the same but the time it takes for the ping result to appear in the terminal is much longer with eth1:0. For ...
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1answer
4k views

finding live hosts with nmap

I'm trying to find live hosts on the network with nmap: nmap -sP 192.168.3.0/24 Starting Nmap 5.21 ( http://nmap.org ) at 2012-04-10 10:28 EEST Nmap scan report for km-localhost (192.168.3.1) ...
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1answer
13k views

Enable ping to pass through pfSense

I have a pfSense v1.2.3 running and want to allow ping from the WAN through to my LAN and allow the response to get through. Web traffic goes through just fine, but not pings. As suggested elsewhere I ...
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Can't ping one server of two by name, but can ping both by IP

I have two database servers where I can ping both by IP, but can only ping by name for one. The setup: Server1 - Original Data Server2 - Receives data from Server1 through replication Server1 can ...
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Client can't ping server untill server has first pinged client?

Problem: Client computer can't ping server until the server has first pinged client. If I stop pinging the client from the server, the client will no longer be able to ping the server. Does anyone ...
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379 views

ping6 overhead compared to ping overhead

I am testing IPv6 latency from a Linux box, and I noticed this weird difference between IPv4 ping and IPv6 ping: # ping -n -A -q -c 500 speedtest.steffann.nl PING speedtest.steffann.nl (10.3.10.20) ...
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367 views

Can't connect to server, others can

I've set up a Webserver(port 80) and a Minecraft server. Me and my friends play on this server regularly and haven't had any problems connecting before this. Now, one friend complains about not being ...
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478 views

ping/ssh networking problem with server from 1 particular windows xp laptop

I am experiencing an odd problem with one specific server at my data centre connecting from my laptop. Basically the server is accessible from other machines in my house, but not from 1 particular ...
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4answers
992 views

When I ping Internet addresses like yahoo or Google, I get 2 reply packets and 2 lost packets

I have Airtel broadband and a Tata broadband connection. i have around 50 PCs connecting through an airtel broadband connection. Both are dsl connections with my phone line going into dsl modems and ...