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

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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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592 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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3answers
25k 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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2answers
8k 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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574 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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2answers
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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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422 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
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
390 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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1answer
500 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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2answers
10k 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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2k views

Server can't ping or connect to self

This SF Answer helped me after nerve's answer below: No network loopback device after security update ubuntu 12.04 Original Question I've been Google-ing and banging my head against the wall for a ...
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1answer
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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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317 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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1answer
1k 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
349 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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1answer
2k 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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1answer
662 views

Is this normal that api-verify.recaptcha.net points to google.com?

A user just emailed me saying he could not complete registration in my website. I just checked and already found out it's the recaptcha that is causing the problem. I have been using this recaptcha ...
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2answers
585 views

SBS 2011 on different subnet than domain computers

The setup is as follows: SBS 2011 in datacentre on subnet A Domain PCs at another location on subnet B There is a site-to-site VPN. The domain PCs have joined the domain and have the SBS as their ...
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2answers
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
9k 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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1answer
3k views

Ping returns “ip no resources”

One of my clients networks keeps losing connectivity, either the network or the PC they are trying to connect to. I am running a ping from the PC to the router which runs fine most of the time and ...
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2answers
538 views

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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1answer
315 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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258 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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1answer
453 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
826 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 ...
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3answers
3k views

EC2 instance suddenly refusing SSH connections and won't respond to ping

My instance was running fine and this morning I was able to access a Ruby on Rails app hosted on it. An hour later I suddenly wasn't able to access my site, my SSH connection attempts were refused and ...
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2answers
3k views

Windows Server 2008 machine only responds to PING from some machines

I have a colocated Windows Server 2008 machine that replies to PING from some machines but not others (not most machines). I'm not sure where to start to diagnose what the problem is. The server is ...
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3answers
710 views

How to use nmap to ping domains and get the output as domains and not IPs?

I am trying to use nmap to ping a list of domains, i am using: nmap -sP -iL /path/to/file/domains The ping works fine but in the output for domains that ping was successful I get the domains ip ...
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How to work around a 'Request timed out' response?

I am in India On ocassion I navigate to the portal of companies I'm affiliated to; these in the US, & Canada As of today afternoon, I'm unable to navigate to the portal of some companies ... ...
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2answers
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Windows Server 2008, can't ping, but networking is fine

I'm setting up a Windows Server 2008 box, and everything is working great (database, remote login, etc.), but it doesn't respond to ping. Normally I might not care, but I'm setting up Nagios ...
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3answers
148 views

Can ping/nmap server, nothing else

I was SSHed into our ubuntu LAMP server , and was just doing a svn update, which hung. I disconnected, and since then, I have not been able to SSH in or view any of our websites (neither from my ...
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1answer
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pinging walls2windows.com returns bad destination from some places

Whenever I ping walls2windows.com at network-tools.com, I get bad destination even though the URL is about 1 month old now and works here. It also doesnt ping at ping.eu/ping DNS and A record IPs are ...
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3answers
2k views

Light packet loss through router

I just recently got a fiber line installed into my office, and with the exception of an odd bit of trouble that we're having, things are working good, and the network response is really amazing. The ...
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4answers
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Free Ping/Tracert tool for Blackberry

I often use my blackberry (Storm) as a troubleshooting tool. For example, if I'm trying to determine if a website is visible from outside of the network, I just use the built in browser. I have been ...
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One server has multiple IP address leases but just one adapter and no dhcp reservations?

One of our servers' has multiple (10) DHCP Addressleases and I don't know why. The server itself has only one adapter and even if I execute ipconfig /all I only see one IP address defined. Even in the ...
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1answer
131 views

CentOS 6.5 on Vmware can't ping Host machine

I have installed a CentOS 6.5 on VMware WorkStation 10 all running on Windows 7 64bit, internet is working fine but I can't ping host machine from CentOS vice vers, it tells me Destination Host ...
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60 views

two different ping results to the same machine, what does this mean?

I am trying to track down a network or possibly server issue, and I opened a ping to the server from my machine. I will generally receive a <1ms response for a period of time, say 10+ minutes. ...
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1answer
99 views

VM load and ping problems after replacing server motherboard

Recently, we had to replace the motherboard of one of our servers. The procedure was done by IBM as it had guarantee. The server runs ESXi 5.1, with several virtual machines, including our main mail ...
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1answer
241 views

ping seems to be timing out in a shorter duration than specified?

I'm seeing some weird behavior with the built in ping command that I don't understand. (this is on a windows 2012 r2 box - I haven't verified if this behavior is seen on other windows versions) If I ...
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1answer
267 views

“Destination Host Unreachable” and ARP returns no addresses over LAN

I am currently trying to setup LAN over two machines with a network mask of 255.255.255.0 however I am receiving the following message when trying to communicate between them both; [root@alpha ~]# ...
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220 views

VPS server ping ok, but don't respond

First time here. I'm (was) using a virtual server with Kloxo, 2GB RAM, 2vCPUs, Centos 6.x 64bits. After 3 days working fine, it doesn't respond anymore, only ping works. The only change I did lately ...
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1answer
769 views

Unable to ping 127.0.0.1 … except as local Administrator

I'm having this issue with two Server 2008 R2 domain member servers built as VMWare guests. The DCs built at the same time do not have this issue. When I try to ping 127.0.0.1 (or "localhost") when ...
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2answers
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Setting up 2 IPv6 Subnets and ping across Cisco router [closed]

I am trying to setup 2 IPv6 subnets across a Cisco 2621 Router. I am having some trouble... I have assigned: fe0/0 2607:fcb8:10::x:x:x:x fe0/1 2607:fcb8:11::x:x:x:x On the fe0/0 side I have a ...
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Server 2012 intermittently fails to respond to pings from single host, even with firewall disabled, but responds to non-ICMP requests fine

This one is kind of weird. I've got the following machines involved: DC01 - 10.1.2.42, Server 2012, domain controller & DNS server, physical machine nagiosv - 10.1.2.35, CentOS 6.4, Nagios, ...
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141 views

openvpn setup ping/routing fail

My problem is that after setting up VPN on a virtual machine (Ubuntu Linux) with that has an IP I cant ping anyone at all over the tun interface from the client. VPN Connection is however successful. ...
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1answer
127 views

Ping time jumps from 0.9ms to between 11 and 28ms

I have a server with 5 other devices all plugged into a single switch. I can ping all devices with nice low ping times (between 0.6ms and 0.9ms). But, all of a sudden, the ping time to one of the ...
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345 views

openvpn (tun0 + bridge) : Comunication bridge --> tun0 works but not the opposite direction

My network is composed as follows: Host A with ip 9.x.x.x and vpn ip 192.15.206.x (openvpn client) Host B with ip 9.x.x.x and vpn ip 192.15.206.1 (openvpn server) this host has a bridge br0 with ip ...