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

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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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423 views

How can I use ping with a large packet size to troubleshoot network issues?

What types of network problems can be identified with ping of a large packet size?
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Windows Server 2008 Standard, firewall disabled by Group Policy but ports are still filtered

Hihi, So vanilla install of WS2008R2S, disabled FW with GP and trying grab SNMP with another host on the same subnet. The output of both if/ipconfig's and nmap -p 161 is below. Both machines running ...
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DELL 6224 switch strange behaviour

I'm having a hard time with my DELL 6224 switch. This switch is the center node of my network, trunking between other switches, VLANs and routing packets. The network traffic that it's been handled ...
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152 views

ping service making hundreds to thousands of ping type requests per minute, os tweak advice?

If a server is monitoring thousands of endpoints (http, https, ping, etc) and these checks are done every minute, what o/s issues should I be researching? 1K+ requests per minute is what I want to ...
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how to check connectivity to server by windows tools?

I need to check if client can connect to server on specific TCP port. Server is listening on it. Tried "telnet server_IP port" but telnet is stuck when I see that it's connected to the server. Seems ...
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Can't ping using IPv6 address

My network setup is very simple: two win7-64 machines connected to a switch. IPv6 enabled for their network interface. No router no outside network no DHCP. ipconfig report for the computer shows ...
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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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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 ...
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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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507 views

ping -R and traceroute mismatch

I am stuck at a very strange result after running the command ping -R in a unix environment. To be more specific, I am trying to follow the path to a server and back but there is quite a mismach ...
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Ping does not work on fully qualified name on local network

We have a windows 7 Prof 64 bit on our domain network. I was able to connect the web applications on that windows 7 PC via https://PcName.location.company.com/webapp But now only this URL ...
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Graphical Ping utility with logging

I need to continuously test the quality of the connection between hosts, and I would like to use ping for that, in order to see WHEN the problem occurs. It should provide LOG of the pinging, with ...
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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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Why am I Unable to ping port 443 on Ubuntu?

I have opened port 443 through iptables: pkts bytes target prot opt in out source destination 45 2428 ACCEPT all -- lo * 0.0.0.0/0 0.0.0.0/0 6 1009 ACCEPT tcp -- * * 0.0.0.0/0 ...
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Unable to ping, although can download packages

I've installed Debian Squeeze on a Dell PowerEdge server. However, I'm facing some problem with configuring the network. Although I can ping machines inside my network, I'm unable to d0 so outside the ...
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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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winsock unable to ping URL but able to ping ip

i have a web app on the server that sends emails with aspemail from persists today it stopped and i get error Winsock error 11004 (0x2AFC) occurred. if i try to ping the host server smtp.gmail.com ...
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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 tests reply instantly, but report enormous response times

I'm still attempting to confirm my hypothesis that this problem may be isolated to servers hosted on the same physical Hyper-V host, but certainly at least I've found frequent, though intermittent, ...
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2answers
979 views

How to reduce ping between server over the world?

I have some servers in France and in Hong Kong. Ping is quick to google.com, < 10ms in france, and < 30ms in HK. But ping between these servers is greater than 250ms. This is very slow and very ...
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DNS resolves in a wrong way [closed]

I have a simple ping app made in C#. the only thing it does is pinging a host. when I'm running it on my local computers, it works in the way it should, but once I'm moving it to my server, it works ...
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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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What does mdev mean in ping(8)?

What does mdev mean in ping output (last row below)? me@callisto ~ % ping -c 1 example.org PING example.org (192.0.43.10) 56(84) bytes of data. 64 bytes from 43-10.any.icann.org (192.0.43.10): ...
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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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why can't access the site when ping the ip it can get through?

When I used the ping command to test my site, it shows OK. When I access the site with ip or domain(sexylingerietop.com), it shows Unable to connect. I put the site on a vps yesterday. The site ...
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Find information for local IP address?

We have had a BT engineer visit recently, trying to solve a problem with our IP phone system. One point they made was that we had four DHCP servers running on the network. I have disabled two of them ...
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Latency, Ping and Other Questions [closed]

In a high traffic application, like an online auction system, few ms could determine 'to win or 'to lose' the 'battle'. I'm from Brazil. Here, I 'ping' local sites - like UOL - and receive replies ...
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4answers
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ping https when ICMP is blocked

I working with web servers that ICMP is disabled on them. On the other hand they answer to some https requests. I'm basically looking for http like ping capabilities in order to check if another ...
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what IP address can I ping as a watchdog target for load balancer?

I'm setting up a load balancer for my network. I have three options to select as a verification method if WAN is still alive: Link Up (whether a modem is alive). This doesn't work for me because ...
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1answer
702 views

What is the maximum normal latency for internal gateway switch?

I've been observing the ping latency to my server's internal gateway switch from my server machine. I noticed the ping spikes to as high as 500ms at times. Is this a possible indication that the ...
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Web Server Can't Ping to Outside/External IP's

I'm having this problem. I'm trying to connect to my datacenter, and It seems that my webserver can't ping to my router, and even can't ping to others pc in my network. Well, I'm new in this ...
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Ping based Windows monitoring dashboard

I have 3 servers that I need to (visually) monitor all the time. Currently there is a "method" using 3 ping -t processes running in separate command prompt windows and I am trying to replace it with ...
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Why do I get search.com instead of “host not found”?

On my VPSs with LeaseWeb, whenever I reach an non-existent host, I get search.com domain name, and if I ping a non-existent domain from SSH, I don't get "host not found" but replies from IPs like ...
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1answer
501 views

VMware Host-Guest intermittent communication on bridged mode

I'm running 2 VMs (Unbuntu & Ubuntu Server), both of them are on bridged mode. The host is a Win7 running VMware Workstation 7. My purpose is to set up a PostgreSQL server on the Ubuntu Server VM, ...
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Ping Linux server by hostname inside Windows network?

Can anyone point me in the right direction on what should i do in order to be able to ping a linux server from inside a windows network (with a domain)? I've searched on google and found several ...
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Why can't I ping my server?

I am logged onto my Windows Server 2003. I am trying to ping another server that is Windows 2008 by using the command promt and putting in the ip address that I had given it. For some reason it seems ...
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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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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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Is Ping a reliable way to check if a server is available?

In my application I am pinging a server and waiting for a response. I am using this to determine whether the server is available and responsive or not. Is this a reliable way of determining ...
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1answer
544 views

can't ping/ssh new libvirt instance

I have a working virtual host that was Ubuntu-Server Lucid (10.4). I've been using it for a while and has several functional guests created on Lucid. Today I upgraded to Maverick, then to Natty ...
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How does ping work when a host name has multiple ip addresses?

For example, google.com has at least these ip: 74.125.225.49 74.125.225.51 74.125.225.81 Does ping just pick one of them randomly?
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ping fails but ssh succeeds

I'm facing a situation where one app(using ssh) can connect from Machine A (Linux) to Machine B (windows), whereas Machine A cannot ping Machine B. Another app on Machine A which connects to Machine B ...
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3answers
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Why is DownOrNot and JustPing reporting that my website is down?

I was pinging my site with DownOrNot and it is reporting that my website is down from ALL locations: http://www.downornot.com/qweop Then I pinged it with JustPing and it is reporting that my website ...
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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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I can't ping my gateway, but I can ssh to a remote server. Why?

I'm trying to configure my dorm room network. I'm working on ubuntu. It seems that the dorm building has a host as gateway 192.168.22.254. My route -n looks like this: Kernel IP routing table ...
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What should I do after traceroute?

I have a problem that my server (CentOS 5) cannot connect twitter.com. I've used traceroute command like this: traceroute twitter.com -d -I and I got the following lines: traceroute to ...
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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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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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What are the proper contents of an ICMP message? (Buffer, Don't Fragment, etc..)

I'm creating a Tracert program and am wondering if the value "buffer" used in the Ping payload really matters. Can it be anything, or do routers respond differently based on the contents of the ...