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

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Why can't I ping my freshly set up amazon web service EC2 instance?

I was following this tut on how to set up a EC2 instance on Ubuntu but qhen trying to execute ssh command on my IP address, I had an operation Timeout. So I tried to ping it but no chance neither. ...
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1answer
439 views

ping -a not resolving hostname for one host on Windows 7 client

ping -a 192.168.99.3 does not resolve hostname for vcl.nailit.lab, but does for other hosts on network like pfsense.nailit.lab. nslookup vcl.nailit.lab and ping vcl.nailit.lab work correctly. See ...
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0answers
20 views

Automatically start machine if another fails

Is it possible to get a backup server (machine) to automatically start if the main server (machine) fails (i.e. does not longer respond to ping, or something). We're talking physical servers, not ...
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2answers
10k views

How to ping eth0 from eth1 on my linux machine?

I have a linux machine with 2 ethernet ports(eth0 and eth1). eth0 is connected to a router which assigns it an IP address 192.168.1.2. eth1 is connected to a switch which doesn't have an IP. How do I ...
4
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1answer
2k views

blocked.domain.gstatic.com - Where could this blocking be?

As of this morning we were having serious issues (partially loaded site with no functionality) accessing Google Drive which we use heavily. Other websites seemed to work fine. This is happening on ALL ...
3
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4answers
3k views

Are network and broadcast IPs supposed to respond?

I have a /24 network that is subnetted into a bunch of small chunks. I have recently gone into each router on the network (mostly Cisco) in order to document how this network had been divided. Now ...
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0answers
308 views

Getting chunks of high ms when pinging local / external IP addresses?

I am having difficulty identifying what a specific problem with one of your vlaned networks. They have a voip phone which regularly cuts out during long phone calls. I have done several ping tests ...
3
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1answer
4k 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
352 views

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 ...
0
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1answer
100 views

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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2answers
1k views

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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1answer
108 views

First Reply on Ping is Unreachable the rest is okay [closed]

please check this weird ping i'm having What may have caused this problem
4
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1answer
887 views

ping: sendmsg: Operation not permitted (sometimes)

On a Ubuntu 14.04 running Haproxy, after a service haproxy reload, Haproxy is suddenly reporting all servers behind it as down. After some digging around, I noticed that ping is not working properly, ...
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2answers
7k views

Can browse, but can't ping

I am behind a corporate network. I am unable to use git, since it can't resolve server names fatal: Unable to look up someserver.org (port 9418) (No such host is known. ) I can't ping that server ...
2
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2answers
182 views

Why Ping starts showing results only after a minute

I am running a Solaris 11 system over a local private network 192.168.100.0/24 and I run ping -s to get continuous ping. From the Gateway to my server I get root@mygateway:~# ping -s 192.168.100.42 ...
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2answers
401 views

extreme ping latency in WDS network

I have setup a wireless network at work office with the following config: 192.168.1.1: TP-Link 941 Router, Root AP, connected to internet 192.168.1.2: TP-Link 901 AP, WDS Repeater, connected to ...
2
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1answer
2k views

Cannot ping to localhost into CentOS

I'm connecting to my server (Centos 7) with ssh and I try to ping to localhost: ping 127.0.0.1 but doesn't work: ping 127.0.0.1 PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data. ^C --- 127.0.0.1 ping ...
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1answer
912 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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0answers
89 views

Bad ping results while testing 6000 TCP clients with 18 mbytes/s total traffic on Windows Web Server 2008

The clients are running on the machine #1. The server is installed on the machine #2. The machines have a gigabit connection through a switch on their private vlan. There are no errors in the switch ...
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2answers
316 views

TTL in ping vs dig

When I ran ping google.com, I get a ttl value of 55: 64 bytes from 173.194.127.103: icmp_seq=68 ttl=55 time=16.4 ms When I ran dig google.com @ns1.google.com., it get a TTL value of 300. ...
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3answers
2k views

Linux command to wait for a SSH server to be up

I have a script which creates a virtual machine and gives me back an IP address. Then I would like to do something like this: waitforssh 192.168.2.38 && ssh 192.168.2.38 And it will wait ...
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2answers
225 views

how to force linux to accept packet with loopback ip

i have an embedded system with an Ethernet interface that needs to accept external packets with IP of 127.x.x.xx. is there a way to force Linux to accept external packets with this loop back address ...
4
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1answer
455 views

DNS and PING failure - Windows 2003 DNS and SonicWall NSA240

I am hoping someone can shed some light on this one... I have two Windows 2003 DC's - both running DNS, there are several Windows 2008 R2 and one Windows 2012 Standard server running as member ...
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0answers
180 views

Oracle GNS (Grid Naming Service) Breaks DNS

Am running a 2-node Oracle 12.1.0.2.0 ASM Flex Cluster using Oracle GNS which I believe uses zeroconf to create it's adhoc network. Before GNS starts, DNS works, i.e. nslookup, dig, ping, ssh all ...
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2answers
347 views

Domain not resolving from some locations

I need help collecting some sort of proof of what might be wrong here Problem description location 1 Ping <domain.net> Ping request could not find host <domain.net>. Please check the ...
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2answers
282 views

Need to understand : ping

I am using ubuntu 13.10 and I have used ping before to check server is up/down. Can someone help me understand, as I'm unable to find anything explaining this I did the usual ping command ping ...
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2answers
10k views

Ping to IP address returned Destination Unreachable for a different IP address… huh?

This was totally an isolated incident, but I performed this command: ping 192.168.1.134 and got this result [image]: Pinging 192.168.1.134 with 32 bytes of data: Reply from 192.168.1.133: ...
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1answer
6k views

Server 2012 Can't Ping Local Network

I have four Windows Server 2012 servers hosted on ESXi 5.5. The first one is the firewall box with two network adapters. One with an external connection to the internet, that is shares its connection ...
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1answer
576 views

Linux ping network namespace

I added namespace to my host-machine and made it available by using this: ip netns add h1 ip link add veth01 type veth peer name veth1 ip link set dev veth1 netns h1 ifconfig veth01 10.0.0.1/24 up ip ...
0
votes
2answers
1k views

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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5answers
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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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0answers
624 views

One server has multiple IP address leases but just one adapter and no dhcp reservations?

One of our servers' has multiple (10) DHCP Addressleases and I don't know why. The server itself has only one adapter and even if I execute ipconfig /all I only see one IP address defined. Even in the ...
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1answer
875 views

CentOS 6.5 on Vmware can't ping Host machine

I have installed a CentOS 6.5 on VMware WorkStation 10 all running on Windows 7 64bit, internet is working fine but I can't ping host machine from CentOS vice vers, it tells me Destination Host ...
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1answer
3k views

Can't ping my static IP address from external network [closed]

I have an ubuntu server and a static IP address. When I try to ping my IP static ip from my internal network it work but, when I try from external link remote ping I haven't no response!! #cat ...
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1answer
80 views

Geo distributed ip [duplicate]

When i ping 8.8.8.8 from my home computer (europe) i get around 26 ms latency. When i ping 8.8.8.8 from a server(US) i get around 1 ms latency. When i ping my (US) server from home (europe) i have 130 ...
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2answers
2k views

RDP add domain users broken

I have 3 Windows Server 2008 R2 instances, all of which are virtual machines hosted on a single VMware ESX server: Domain controller with DNS services DHCP/RRAS File server All three servers are ...
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votes
3answers
3k views

able to dig a hostname but doesn't resolve via ssh or ping

I am using Snow Leopard and cannot ping or ssh into a host but am able to dig: dig some.value.host.com When the ip address comes back in the answer section, then I am able to ssh via ip address ( ...
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2answers
1k views

What would cause alternating “Request timed out.” and “Destination host unreachable.” when using ping command?

I am pinging a Windows 8.1 PC that is currently shut down and I'm getting alternating results "Request timed out." and "Destination host unreachable." What could cause this kind of behavior?
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0answers
194 views

Apache Instance in Private Subnet not returning packets

How can we get the Apache instance in a private subnet to work? Configuration Public subnet with 1 NAT instance Private subnet with 1 App instance Details 1. Masquerading is turned on NAT on via ...
3
votes
8answers
1k views

Ping stops responding after the first line

I have a problem with the PING command on Windows 8.1. During a ping, the command returns no further output after sending the first ping request. For example: ping 192.168.1.200 Pinging ...
5
votes
3answers
23k views

Ping from specific network adapter on Windows

Hey, I've been troubleshooting network issues on servers with 2 NICs and laptops with wired and wireless cards. How can I force the PING and TELNET to be sent from a specific adapter? I know it's a ...
0
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2answers
5k views

Batch - Ping IP and execute different commands on return

I'm trying to make (hopefully a simple) script that when run pings my mobile device. If the mobile is connected to the network it will execute one command and if not it will execute another. I've ...
3
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1answer
489 views

Ping fails with the record route option

I'm having trouble with the record route (-R) option of the ping command in Linux. It appears that when I run the command without this option, I am able to receive a response from a range of servers ...
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0answers
114 views

two different ping results to the same machine, what does this mean?

I am trying to track down a network or possibly server issue, and I opened a ping to the server from my machine. I will generally receive a <1ms response for a period of time, say 10+ minutes. ...
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2answers
170 views

PING to my site url returns 100 percent but my site is still up and working [closed]

I've done ping mysiteaddress.com But I get PING mysiteaddress.com (xx.xx.xx.xxx) 56(84) bytes of data. --- mysiteaddress.com ping statistics --- 29 packets transmitted, 0 received, 100% packet ...
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3answers
8k views

Can access website, but can't ping it, nor access via FTP

I'm having a problem connecting to a server by other way than HTTP. Connecting via FTP ends with timeout, as well as pinging: C:\Users\folmert>ping wroclaw-elektryk.pl Pinging ...
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1answer
102 views

Do anycast addresses imply IPv6? [closed]

From what I understand, as a random user on the Internet, you cannot really know if an IPv4 address is unicast or anycast. However if you ping that IPv4 from two hosts physically located on two ...
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14answers
22k views

How can I determine if a machine is online without using ping?

I used to use an application that could ping or maybe run a port scan on a machine even if the machine was configured to not allow it. I am currently trying to ping a remote machine on our WAN, but I ...
1
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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 ...
0
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2answers
11k views

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 ...