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

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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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2answers
1k views

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
587 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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4answers
162 views

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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2answers
858 views

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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2answers
76 views

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 ...
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1answer
90 views

How to run putty on a particular network adapter

I have a loopback adapter which uses SLIP to communicate to a microcontroller. The issue I have is on Windows I dont know how to run putty on that particular network adapter. Does anyone know how to ...
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2answers
150 views

How do know if I can SSH in servers?

I have over 200 servers, but is hard to keep tracking all of them by some documents, after a while it gets outdated, so to refresh this document, I have to know which servers I can login via SSH. I ...
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1answer
82 views

Is it worth to set up a different network interface for connections to MySQL?

I have a high load website served by two servers: web server with nginx and php, and database server with mysql. Web server serves all the static content and connects to MySQL and outside world ...
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3answers
74 views

Reverse dns returns a different host each time

So, randomly I happened to ping abc.com and found this fascinating: $ ping abc.com PING abc.com (199.181.132.250) 56(84) bytes of data. 64 bytes from m.abc.com (199.181.132.250): icmp_req=1 ttl=237 ...
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2answers
2k views

How to monitor printer host status with zabbix

I need to monitor host status of printers from zabbix. I managed to monitor the inklevel via SNMP. Any ideas to monitor printer reachable or not ?
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1answer
76 views

Ping Elastic IP Address from Inside Server Fails

I have an EC2 server set up inside a VPC on Amazon. The server is reachable from the outside via its elastic ip address; however, when I attempt to ping that ip from inside the remote desktop ...
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2answers
2k views

Amazon EC2, still cant ping or “http” it

I am new at Amazon Cloud technologies. I ve set up an Amazon Linux instance created my keys and assigned elastic IP. Also, I opened all TCP, UDP, ICMP ports(ok, it's very dangerous, but I am using it ...
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1answer
236 views

Ping/traceroute tool for OSX [closed]

Any suggestions for a network monitoring tool for OS X that can do the same functionality like Axence Nettools. Basically, I want to be able to track ping history and view them as a report. Other ...
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1answer
98 views

2 VMs with Win Server 08 - how to ping/connect to a DB?

In the past, I always installed SQL Server on the same machine as the server application that would be using it. Now for the first time I need to install a MS SQL Server 2008 R2 DB instance on a ...
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3answers
967 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 ...
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3answers
390 views

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 ...
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1answer
261 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 ...
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1answer
484 views

High ping everywhere except one PC

I have a network with a really high ping (usually more than 500ms) except for one laptop. And in that laptop the ping is usually 5ms. I've tried: - using same model laptop - compare lan driver ...
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3answers
108 views

I want to be notified when a LAN IP goes live

Is there a tool or something that can notify me whenever a local IP goes live on my network. It could be that it continually ping that IP and display a notification to me whenever that IP return a ...
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2answers
830 views

Wireless Access Point - Can't ping other machines on the wireless network

I have a wireless access point (Netgear), and I have it setup so that it has an IP address in the current subnet (let's say 192.168.2.0, subnet mask of 255.255.255.0). The machine that it is ...
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2answers
2k views

Nagios check_host_alive and check_ping not showing host as down

I am using the check_host_alive command to send 5 packets every minute to all my routers at remote locations. I noticed today I received a notification from The AT&T Global Client Support Center ...
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2answers
4k views

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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2answers
3k views

Iptables: how to drop incoming pings from host but allow ping responses?

I am practicing with iptables and... I need a rule that will block a certain host from pinging me but will let me to ping the host if needed (so I need to accept ping responses right?). Can you help ...
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1answer
498 views

Cannot connect to virtual machine

I am working on Ubuntu machine, and created virtual Windows XP machine in Virtual Box 3.2 I cannot ping it. Regardless if I set virtual machine Network (in Settings) to Bridged or Host-only, I can ...
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1answer
103 views

LCMS machines are pinging random computers on company intranet

we have some LCMS AGILENT machines set up in our lab. for some reason they are pinging random computers in our company. every now and then someone on our network will get a windows firewall ...
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3answers
271 views

BIND/DNS Issue — Not Seeing New Domains

I have set up local BIND/DNS services on an Ubuntu Server (Linux). It is working properly and lets me receive new domain requests for multiple hostnames set up in our Apache web service. So, I can ...
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2answers
1k views

VMware workstation 6.5 VMs (Host-only network with static ip address) cannot ping each other

I had specified Host-only network and disabled the dhcp server that comes with the Host-only network. I had setup the following network config, vm1 ip address: 192.168.147.2 netmask: 255.255.255.0 ...
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1answer
297 views

Windows Virtual Machine ping reply fails the first few times

I am running a windows Web Server 2008 virtual machine. When I try to ping it from another windows machine the ping reply comes straight back with 100% success. But when I try to ping it from one of ...
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3answers
491 views

ping alternative to measure routing distance (on Windows)

in order to measure aprroximately the rouitng distance (to see if a server is close to my country or too far away) I usually use ping command. I'm in Italy, when I ping Italian servers I get 36ms ...
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2answers
2k views

Pinging switch results in alternating high/low response times

We have two switches that are behaving strangely. When I ping them the responses alternate between high and low results: C:\Users\paul>ping sw-linksys1 -t Pinging sw-linksys1.sep.com ...
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3answers
227 views

remote telnet and email

This issue has been occupying my work for the last few days and I will be understating when I say its driven me up the blasted walls. Essentially, I can ping and tracert the domain jnrcs.org and the ...
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2answers
5k views

pptp on Ubuntu server can't ping other machines on the LAN

We have a simple pptp setup on our windows 2k3 server. So far all clients can connect just fine, mac and windows. However I tried connecting an ubuntu server using pptp and the connection is fine I ...
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2answers
1k views

Ping a computer over VPN when ip is in conflict

I usually connect to a remote server over Remote Desktop Connection, however this time it doesn't work (for this particular new server) and I don't really know what to blame. I connect to the network ...
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3answers
832 views

Gateway status checking methods on linux/bsd

I'd like to know if there's any reliable tools I could use (integrate with my network config) to monitor the status of the gateway and switch the default gw when it detects that the main gateway is ...
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3answers
4k views

VMWare networking problems

I have WS 2008 installed as a guest under VMWare workstation 6.5. Networking is set to bridged and all firewalls are off. I am seeing some very weird problems with the network (mainly evidenced ...
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2answers
28 views

what does `pipe <number>` mean in `ping` output?

While running a test to diagnose some alleged network problem, I got this output from ping: --- r01c01b11n02 ping statistics --- 30000 packets transmitted, 29995 received, 0% packet loss, time 6309ms ...
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1answer
44 views

Windows 2012 R2 Server network fails intermittently

I have 2 windows 2012 R2 servers in a production environment. Both are VM's and configured same with the ip address as different. I haven't recieved alert of any kind of network failure for one ...
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1answer
137 views

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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1answer
159 views

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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1answer
129 views

ICMP echo-reply packets with a much lower TTL (-190) than ICMP time-exceeded packets

When I ping the last three hops of a traceroute path to facebook.com from my location, the ICMP echo-reply packets I get back all have a TTL of respectively 58, 57 and 56. The hops in question are the ...
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1answer
59 views

Router Behavior for MAC Address Change for same IP

+-----------+ +------------+ +---------+ | LAN |eth0 lan0| Router |wan eth0| | | PC |===========| |===========| WAN-PC | | | ...
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1answer
107 views

Cannot ping gateway

I replaced my aging fileserver with a new server running ESXi 5.1 and migrated my fileserver in a virtual machine running on it. Now I have the following problem with this VM: I'm getting the ...
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1answer
86 views

Branch to Branch VPN through HQ router?

I've just upgraded our router and am working my way through setting it up as the old one was. The new router is a Draytek Vigor 3900. We have a number of sites with IPSec tunnels dialling in to our ...
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1answer
133 views

debian clients connected to the same switch, ping problems

I have two machines that are connected to the same switch. Machines have multiple ethernet interfaces connected to the different networks. Computer A can ping an antenna which is connected to the same ...
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1answer
62 views

Linux server responds to postgresql querys and ssh only when pinging the server

I have a problem. My developers are using one of my local servers that is located in our office. The server is running PostgreSQL and when they try to make a query to it, it just lags and then gives ...
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2answers
69 views

Will I get banned or blocked for running a diagnostic app?

This may seem like a simple question. Hopefully it will have a simple answer. I run an internet radio station. There are 3 machines. Music source client Stage server Master server (relays the ...
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1answer
79 views

Ping sometimes resolves the name, sometimes not

Is this a normal behavior, that ping sometimes displays the server name, sometimes only the IP? OS: Ubuntu 12.10 ~# ping development.example.local PING development.example.local (192.168.0.25) ...
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1answer
1k 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
308 views

Reply times vary with ping test

I am seeing the following and I have already scanned all the computers for viruses and there were some but they have been removed. Would anyone have any other ideas on what tools or other things that ...