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

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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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514 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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129 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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3k 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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7k 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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2k 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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534 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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277 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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225 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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439 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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717 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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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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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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618 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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3k views

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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3k views

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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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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85 views

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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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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5k views

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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42 views

Ping not working from tap interface attached to bridge interface with ip on same subnet as that of bridge to outside

My requirement is to create a multiple tap interfaces, each with ip address on same subnet. I tried this by creating a bridge br0 (192.168.1.199) ...
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76 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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104 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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344 views

OSX nslookup can resolve a lan hostname, but ping cannot? [closed]

I'm having an issue which recurs every few days, whereby ping cannot resolve a hostname on my LAN (but nslookup is able to). This is on OSX 10.9.2 (latest). The machine in this case is called ...
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128 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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315 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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93 views

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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327 views

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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92 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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96 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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249 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 ...
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How to interpret traceroute with success on some routes and failing on other similar routes?

I have traceroute paths from 3 unique source hosts, to a single destination host (173.254.24.18). The final results of these three routes are including similar elements, and yet the final failing ...
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170 views

Cannot ping any machine on local network (embedded linux device)

I have an embedded linux installation (custom built using buildroot, uClibc and busybox) and I am unable to ping any machine on my local network. My /etc/network/interfaces file is as follows auto lo ...
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217 views

Pinging between hosts through Layer2 tunnel fails

I have some serious problems with my newly setup network with a Layer 2 VPN tunnel. I draw a little diagram to show the simple version of the setup: The green lines are through the VPN, the blue ...
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253 views

2 nic cards in ubuntu PC, one to router, one to win7 pc, make connected pc on router talk to win7 on 2nd nic

There are 2 win7 pc, 2 100 mb/s routers and 1 ubuntu 12.04 pc. I scanned a diagram of the Lan setup with IP's ...
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195 views

Website is live but ping times out

I have a client's website that is running on GoDaddy hosting and started behaving very strange recently. The site is up and running but when I try to ping it I get time out. The problem is PayPal ...
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259 views

can't connect 2 subnets through RRAS 2008 r2

I'm working on a project for a networking class. In VMWare Workstation, I have to set up a 2008 r2 server with DHCP reservations for 2 clients on separate subnets and have them ping each other. Here ...
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150 views

Smokeping FTPtransfer probe

I'm trying to set up a SmokePing FTPtransfer graph but with no luck. I have the ping graphs all figured out but the FTP graph is just empty. Here is my Probes config: *** Probes *** + FPing binary ...
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645 views

Arp request is not resolved

On my machine, I have assigned ip addresses for two interfaces which are connected through a cable. They are connected with 10G ports. When i tried to ping the two addresses, ping was not working. ...
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429 views

Icinga change ping check interval from service and http

I have Icinga installed on a machine with the basic configuration and we just use the Host Status Detail screen with a big monitor only to know when a machine is down due to network/eletrical ...
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52 views

Configuring klg looking glass on Ubuntu [closed]

I am trying to configure klg looking glass and followed the klg_README.txt file. I think this klg_README.txt file is sufficient for expert guys. I am new with this tool. I have tried and could not add ...
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259 views

Clear OS Community and packet time out in client machines only

I am having Clear OS Community Edition running as router with 2 network interfaces. Interface eth0 is connected to LAN with ip 192.168.122.2 and interface eth0 with ip 192.168.2.2 is having internet ...
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965 views

Sonicwall NSA2400 - No internet access

We've got a SonicWall NSA2400 configured with a LAN (X0) and a WAN(X1) interface. It was setup and working fine until just recently when a temporary worker changed some settings most likely NAT. We ...
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974 views

Ping starts, then immediately fails, to just one device on a network of 70+ and only from one part of the network! Super confusing

long-time reader first-time poster. I managed a network of 70 odd PCs connected to 3x different network switches (3 buildings all next door to each other). Looks like this: BUILDING 1 SWITCH -> ...
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184 views

Windows 2003 VPN, client connected to server, but can only ping part of servers

My Windows 2003 server has an integrated ethernet card as well as a dlink card. Using "Configure your server wizard", I successfully created a VPN server. The server IP is : 192.168.123.1 and ...
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Calculating the round trip time for ping packets

I am currently practicing for my network & communications course and have managed to confuse myself slightly on a question about packet round trip time. I have made a start but am now a bit stuck! ...
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LAN to LAN VPN connectivity issues

I have a route-based VPN with limited functionality. My computers on site-A can ping one workstation on site-B, it happens to be the only workstation that is not part of the domain that has been ...
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344 views

strange ping start time on Windows 2008 R2 server

I have a 3 computer network connected through a Linksys/Cisco E3000 Router in a small office. One is running Windows 2008 R2 Foundation and the other 2 are running windows 7. When I ping the R2 from ...
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Why Does Ping's RTT Derive From The Echo Reply?

This is a follow up on Why Doesn't Ping Show RTT? I had a look at BSD, Linux and BusyBox ping implementations. All three share the feature that they calculate the round trip time by sending a ...
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Hosts cannot ping each other since they have been added to domain. What's going on?

I have three Windows Server 2008 R2 VMs running on VirtualBox on an internal network 192.168.42.0/24. IP addresses are 192.168.42.1, 192.168.42.2, and 192.168.42.3. All three hosts could ping each ...