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

learn more… | top users | synonyms

1
vote
3answers
4k views

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 ...
1
vote
1answer
15k 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 ...
3
votes
2answers
798 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 ...
0
votes
2answers
425 views

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 ...
4
votes
4answers
19k views

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 ...
2
votes
1answer
4k 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 ...
3
votes
9answers
6k views

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 ...
4
votes
2answers
5k views

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 ...
0
votes
3answers
4k views

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, ...
0
votes
1answer
601 views

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 ...
0
votes
2answers
49 views

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 ...
2
votes
2answers
1k views

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, ...
0
votes
2answers
2k 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 ...
0
votes
1answer
1k views

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 ...
18
votes
3answers
16k views

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): ...
0
votes
4answers
2k views

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 ...
0
votes
3answers
2k views

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 ...
6
votes
3answers
8k views

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 ...
-1
votes
2answers
266 views

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 ...
2
votes
5answers
3k views

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 ...
1
vote
2answers
4k views

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 ...
2
votes
1answer
1k 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 ...
0
votes
2answers
838 views

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 ...
0
votes
1answer
603 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, ...
0
votes
5answers
6k views

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 ...
2
votes
2answers
12k views

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 ...
1
vote
5answers
4k views

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 ...
0
votes
2answers
3k views

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 ...
77
votes
13answers
28k views

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 ...
2
votes
1answer
659 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 ...
2
votes
3answers
4k views

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?
0
votes
2answers
4k views

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 ...
3
votes
3answers
463 views

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. Then I pinged it with JustPing and it is reporting that my website is also down from all ...
1
vote
2answers
557 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 ...
2
votes
1answer
3k views

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 ...
0
votes
1answer
348 views

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 ...
1
vote
2answers
197 views

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 ...
1
vote
1answer
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: ...
0
votes
1answer
153 views

Security settings * differences between cmd.exe window and IE

I plan to retrieve an rss file (xml format) with url http://alerts.weather.gov/cap/ma.php?x=0 from a web site periodically with a scheduled task. I have a php script to do that. When I access the ...
1
vote
1answer
445 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) ...
1
vote
2answers
6k views

Can ping an ip but does not show up in netstat?

I was wondering if someone would be able to help me with a head scratcher. We have a device that has communicated with our server but is not sending back any data. I am able to ping the IP address ...
1
vote
1answer
2k views

I'm trying to make a batch file that will ping multiple IP's and return the results in a text file [duplicate]

Possible Duplicate: Batch file to MASS ping group of computers on network by name, check reply, and resolve hostname I am trying to ping many IP's at once and to date it's been done ...
1
vote
6answers
1k 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 ...
2
votes
3answers
6k views

IP address of virtual server?

I have a virtual server (shared hosting), with a domain name (and several sub-accounts, each one a separate site also with its own domain name) I was wondering if there was a way to find out the IP ...
0
votes
1answer
434 views

Can only rdp or ping to Windows 7 machine intermittently

We have a Windows 7 machine that we can only intermittently rdp into or ping. We have tried this from several different machines and run into the same issue. We discovered if you reboot the problem ...
-1
votes
2answers
286 views

Can ping by IP, not by domain

I have an Apache2 web server with vhosts at 173.xxx.xxx.xx1, listening on port 80 & 443. One vhost I'm trying to access is dev.REDACTED.com. I can ping the IP of the server: ~: ping ...
0
votes
0answers
333 views

cannot ping through gre tunnel

This question has been merged I have 4 machines machine 1 have ip address 172.13.0.40/24 machine 2 have two ip address 172.13.0.1/24 and 172.12.0.1/24 machine 3 have two ip address ...
14
votes
12answers
34k views

Will a higher bandwidth Internet connection lower ping response time?

It sounds obvious that a faster connection lowers latency... But I wonder: I am working remotely on a host the other side of the world - light can only travel so fast (1 foot in a nano second) and we ...
2
votes
2answers
1k views

Ping with long delay but short reported time

What does it mean when a ping reports a reasonable time (~10ms) but actually takes quite a long wall clock time (~15 seconds)? (Additionally, passing the -U option for "full user-to-user latency" has ...
2
votes
6answers
8k views

Intermittent high ping/latency problem

I have been working with my ISP (which is a WISP, actually Fixed Broadband Wireless) trying to figure out why I intermittently get high latency. The latency is detectable in online games and other ...