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

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Ping host computer from installed Ubuntu on virtual box

I have installed Ubuntu 11.10 on Virtualbox 4.1.8. My own OS is Windows7 x64. I need having a connection between these operation systems, but there are many choices. NAT, bridge, Host-Only, etc. I ...
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Know about pinging

How can I get know that somebody was pinging my computer in various operating systems (Linux, Windows). Are there some system logs recording such event?
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Fastest way to scan all hosts that are online

I am looking to find all the hosts that are online in a set of networks. I would like to find all hosts that are online in the entire network of 170.10.. (there are ~64K possible hosts). The network ...
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Why would I get different ping times directly to 10.0.1.1 versus pinging google.com with TTL 1? [closed]

Using mtr to gather some statistics, if I run sudo mtr 10.0.1.1 to ping my router, it looks terrible: My traceroute [v0.85] Johns-MacBook-Air.local (0.0.0.0) ...
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955 views

Can't Ping host, nmap detects it?

I have a simple question that I'm trying to wrap my head around. I know this requires knowledge of my internal network, but at a glance, what do you guys think.. I cannot ping a host in my network ...
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While using Nmap and sweep the network with a ping

I'm studying up on using Nmap, and there is a command that sweeps the network with a simple Ping scan to determine which hosts are online. The command is this: 1 [ignore_this]# nmap -sP 10.0.0.0/24 ...
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Script to ping all machines in the network, to find the machines that are on?

I am looking for a simple script (that can be executed in windows platform) to ping all machines, and to write the IP of "On" machines (machines that'll reply) to a text file.
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Cannot ping Ubuntu server by hostname

I know this is already asked but I can't find a clear answer. I put a new Ubuntu server in my LAN and I can't ping it but the hostname. I don't want to edit all my LAN windows hosts's file (+40 pcs) ...
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Disabling 'ping' response on Linux VPS

I have a openvz linux vps and am trying to disable requests to 'ping' to my VPS. How can i do this?
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Why I can ping “anything” and I get a response, instead of getting “Unknown Host” [closed]

I can ping any word or domain in CentOS 6 and I get response from the same IP, if that pinged domain doesn't exist in real world. e.g. ping xxxxxx How can I fix this? I want to have normal behavior ...
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Ping from a PC to a Switch - beginner

I new to Cisco networking. I am trying out a simple Network. I connected 3 PCs to a Switch. PC A --> VLAN 10 ip address of PC A 100.100.100.3 PC B --> VLAN 20 ip address of PC B 120.120.120.3 ...
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Cannot ping linux (RedHat) machine by hostname

For some reason, a linux (RedHat) machine that I have is not ping-able by hostname! It is ping-able by IP address though. I have the same network configurations as another linux (RedHat) machine ...
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Can't ping static IP from internal network, only from outside

I'm running ubuntu and I have apache running, however, I can't ping internally to my static IP nor browse http://207.40.XXX.XX the web server using my static IP. I can only ping/browse localhost, ...
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5answers
915 views

Computers on one subnet can't connect to the internet

I have an issue with my student computers - they can't connect to the internet. Here's the weird part: I open a command prompt and ping our gateway server, and suddenly everything is fine (at least ...
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1answer
112 views

How to set up routing tables in EC2, so that ping works

I have a wide open security group which I rely on for instances to be able to connect. I also have a private network of 172.*. addresses, as shown here: What do I need to do in order to allow ...
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333 views

Can ping google.com, but can't ping cnn.com

I have just upgraded from 10.04 to 12.04. I didn't notice the problem at first. But when installing horde with the pear installer it failed to download all of the packages. So I did a little hunting ...
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Low Latency for Google compared to servers located with in my country [closed]

When i ping google.co.in its showing 11.1 ms as average ping www.google.co.in PING www.google.co.in (173.194.36.63) 56(84) bytes of data. 64 bytes from bom04s02-in-f31.1e100.net ...
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Anomalous behavior of Routers

I am observing anomalous behavior Cisco concerning routers. Scenario 1: Ping from Server A to Cisco Router 1905 - 0.3 ms Ping from Server A through Cisco Router 1905 to Server B - 3.2 ms ...
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I can ping IPs, but can't ping any domain

I have a CentOS 6 x86 server. If I ping 8.8.8.8 and my server gateway, there's no problem. If I ping google.com, yahoo.com, etc, it returns "ping: unknown host google.com". When I saw this problem, ...
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Cant ping ip on LAN. Port forward works fine though

I have a Solaris 11 machine running inside the LAN. It is a default install. I can access the machine and ping it if I ssh into my router (if it matters, it is running dd-wrt). I cannot ping the ...
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Cannot connect to computers on same subnet

Newbie question. I have a motorola surfboard router and two computers running windows 7 64bit Pro. Both can connect to the internet fine, but they cannot see each other. I need to remote desktop from ...
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Foundry switch doesn't ping

we have one foundry switches, but we cannot ping the switch, but the switch works well, and we can ping any other device connect to it! we reset the switch couple of time, but the problem still ...
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421 views

Ping 100 ms in one direction 200 ms when opposite

We have 2 independent networks and a few users in network A use remote desktop to get on a terminal server in network B. We set up an IPSec tunnel between the 2. As far as we can tell the bandwidths ...
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Monitor status of VPN clients

Is there any better solution than ping -t for monitor status of some VPN clients. I have set up FreeBSD router with fix public IP address for accepting incoming PPTP VPN connections. The callers are ...
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VPS can ping host by IP but not by name

My Debian VPS can ping all host by name and IP but there's one host I can't ping by name. Ping by name failed but successful with IP However on my home PC i can ping that host by name and IP. I ...
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Is it possible to offer failover even using DNS round robin? [closed]

A company X has five ips to a given service. $ host www.example.com.br www.example.com.br has address 13.194.4.159 www.example.com.br has address 13.194.4.152 www.example.com.br has address ...
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Linux router: ping responses going through the wrong interface

I have a Debian server acting as a router for a small network. It has 3 network interfaces, one LAN and 2 WANs (two different ISPs, let's call them A and B, each of them with a public static IP ...
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IPv6 address not available from outside

Since Hetzner pretty much doesn't give out any IPv4 addresses, no matter what the reason is, I decided to give IPv6 a try. These is the assigned IP address subnet mask IPs: 2a01:4f8:190:5112:: /64 ...
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Fragmentation and packet size,using tcpdump

i am trying to understand concept of fragmentation: i have two virtual machines with public ip connected to a switch. tracepath shows packet not going through gateway from vm1: Trying to send ...
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1answer
185 views

Best practices on lowering latency between two endpoints [duplicate]

I would like to know what tools or what kind of calculation should be made in order to find the lower latency possible between two points physically distant. For example: Ping time from Europe to ...
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989 views

Can ping out but not in

What are some of the causes of not being able to ping a server? I have a windows 2003 box that I can remote into but I cannot ping it. What I have checked is: The server can ping my desktop ...
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Can't ping or remote desktop?

I've setup a win7 laptop and joined a company domain, now I'm unable to ping or remote into the machine. Could someone provide me with some troubleshooting tips please?
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How can I be notified when a server comes back up?

So far I've determined that I can use the ping command to send a ping to said server every 15 minutes or so in a command prompt window in Linux like so: ping -i 900 <server-address> The 900 ...
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How to configure the name returned from ping?

Currently my Debian-based machine returns whatever name was used to ping it, as it's name when answering to ping: - saturn:~$ ifconfig | grep "inet addr" inet addr:192.168.0.103 ...
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Why Doesn't Ping Show RTT?

I'm on OS X 10.7 and just found out, the ping -s 10 host does not work as expected. Its output does not contain the round trip time: PING host (IP): 10 data bytes 18 bytes from IP: icmp_seq=0 ...
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Windows Web server 2008 [closed]

I have a online Windows web server with Plesk as control panel. I have full access to my server by remote admin. I want to stop the ping attack on server by some people or all. Kindly guide how can I ...
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ping preload is not permitted, what could be the reason?

I am trying to ping one of my local host and checking CPU process to see how "Ping of death" attack behaves. I tried to ping my other PC which is in local network with 192.168.44.2 IP Address. I tried ...
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4answers
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Using watch to run a shell script - but the script goes defunct

So I want to keep an eye on my network connectivity so I can make a report for my ISP. (seems like the modem goes out for about 30-60 seconds about once a day) So I copied this handy little script ...
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1answer
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Why does ping flooding a domain name freezes and not a direct ip address

I am wondering why, when ping flooding a domain, the ping flood freezes after a couple of seconds then continues and this freeze, unfreeze continues until i stop the ping flood. When i do the same ...
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Network issues - Windows Server 2003

I am having network issues on my Windows Server 2003. I am running this test: I am pinging my server from remote location constantly (ping -t) I am pinging a stable web site from my server ...
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DNS lookup working but nothing pinging

I have three forward lookup zones in my DNS server. When I try pinging a server that's part of lookup zone A from a computer that's part of that same zone, I get a response. If I try pinging a ...
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How much packet loss is normal?

I started monitoring our network using SmokePing. Users occasionally complain about bad network connections, but the problems went away after some minutes usually. I now wanted to get some more ...
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Ping fails: is a webserver configuration issue or not?

When I ping a dedicated ip on my server I get the following: ping XXX.XXX.95.175 PING XXX.XXX.95.175 (109.72.95.175): 56 data bytes Request timeout for icmp_seq 0 Request timeout for icmp_seq 1 ...
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4answers
647 views

Can't ping self

I have a wireless internet connection setup on my Mac. (v10.5.6) Am connected to the internet and everything is running smoothly. I recently discovered a quirky behaviour while setting up apache web ...
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Is asymmetric latency common in practice?

This is a follow-on to a question posted on stack overflow about whether it is possible to determine the one-way latency of a point to point connection without using externally synchronized clocks - ...
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Have internet but cannot ping ip address

I'm running 2003 Server and have workstations set up to connect to a terminal services session in order to use software stored on the server. we use a program that connects an external entity with us ...
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how to find proces which is pinging localhost

How can you find the process issuing ping to localhost? While it is not script, where the ping command can be simply grep from process table. I have used wireshark, but it is of no help to find out ...
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Linux network namespaces - ping fails on specific veth

I just started to exploring network namespaces. I try to implement the following simple setting following the article in http://www.opencloudblog.com/?p=42 +--------+ ...
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I can't ping to my EC2 instance although icmp has been set

I wasn't able to ping to my ec2 server although I've done the following command: ec2-authorize default -P icmp -t -1:-1 -s 0.0.0.0/0 when I try this again it gives me: ...
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root domain to www forwarding issue

I want to forward my root domain(yourdomain.com) to www.yourdomain.com Should I delete the A record of the root domain and then setup 301 permanent forwarding to www.yourdomain.com? I am hosting my ...