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

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18
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7answers
31k views

Enable Ping in Windows Server Firewall?

I've just installed Windows Server 2008 on a server and I'm able to connect through Remote Desktop but can't ping. Do I need to open an special port on the firewall to be able to ping a server?
2
votes
1answer
50 views

OpenVPN Access Server: Remote Subnet Cannot Access Client's Resources

I have OpenVPN Access Server running on AWS. Here's the configuration: 172.18.16.0/20 Client (172.18.16.101) ----- OpenVPN Server (172.16.0.0/20) | ...
0
votes
0answers
34 views

Remote user cannot ping server intermittently

A remote user sometimes is unable to make a connection to the server. Ping command times out and tracert reaches about 12 hops and then times out until reaching 30 and stopping. It times out after ...
0
votes
0answers
11 views

Some of my clients report a route change when they reboot\refresh their IP?

I made a gaming server recently that hosted by my ISP. Some clients report a change or improvement in ping/latency times from 50ms to 20ms by rebooting their modem/router to get a new IP address, and ...
2
votes
2answers
269 views

PING icmp open socket: Operation not permitted in vserver

I am running a vserver environment with several virtual machines. A single VM has the following problem: $ ping 8.8.8.8 ping: icmp open socket: Operation not permitted $ ls -l $(which ping) ...
2
votes
1answer
1k views

Ping not working from tap interface attached to bridge interface with ip on same subnet as that of bridge to outside

My requirement is to create a multiple tap interfaces, each with ip address on same subnet. I tried this by creating a bridge br0 (192.168.1.199) ...
0
votes
2answers
216 views

packet loss between two specific VMs

I am experiencing some high-percentage packet loss (more than 70%) between two specific VMs in a local network, in a remote cluster (I have no physical access to it). One machine is used as a hadoop ...
-1
votes
0answers
9 views

Can't ping Subnet A from Subnet B with router between them [migrated]

I experimented with subnetting in my home network and Raspberry Pi. The ISP Cable Modem has 4 eth-interfaces and 1 wlan interface which all seem to be switched together. The routers IP is 192.168.0.1 ...
1
vote
2answers
44 views

Cannot ping centos7 host

I am doing this for the first time, so I may be missing something very basic. I installed Centos 7 on a new server and have successfully gotten the connectivity working. Now I want to be able to ssh ...
-2
votes
1answer
19 views

Inconsistent ping to my ISP backbone [closed]

this is a traceroute from My ISP to the same ISP backbone located in another city from my country here (500miles aprox) : http://i.stack.imgur.com/BbQjm.png Does this idicate a traceroute problem? ...
75
votes
13answers
22k 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 ...
-6
votes
2answers
44 views

Ping PC in Different Subnet / Network [closed]

I am new to practical aspects of networking. So what I was trying is to ping two PC which are connected to two (wireless) routers which are taking internet through LAN. So Router 1 IP : 10.100.98.25 ...
1
vote
1answer
36 views

Possible route, but denied?

If ISP (A) can be routed to ISP (B), and ISP (B) can be routed to ISP (C) and vice versa, then why ISP (A) and ISP (C) can't be routed through ISP (B) to each other? The packets are routed like this ...
-1
votes
1answer
28 views

What Factors that affect ping to a dynamic IP? [closed]

If i'm going to test the ping between me and my friend, will interleaved mode that applied by cabinet would affect his connection and expect an increase in the latency/ping to his machine regardless ...
0
votes
4answers
1k views

NSLOOKUP and NBLOOKUP give one IP address; PING finds another

In a Windows Server 2008 domain the on-site domain controller serves as both DNS and WINS server. It is also a DHCP server. One workstation is used as a platform for all admin of the various servers ...
0
votes
1answer
45 views

Fluctuating ping to a certain ISP backbone

There's a central server that located 300 miles away from my country. but when i test the ping to that server or their ISP backbone, i get inconsistent or a fluctuated pings from there. i live in ...
1
vote
4answers
2k views

Sonicwall NSA2400 - No internet access

We've got a SonicWall NSA2400 configured with a LAN (X0) and a WAN(X1) interface. It was setup and working fine until just recently when a temporary worker changed some settings most likely NAT. We ...
0
votes
3answers
189 views

how do I stop protocol 41 unreachable packets from being sent?

I'm using a Hurricane Electric tunnel on one of my VPSs, and it isn't working completely. I set up the tunnel with a script basically identical to this one: ...
0
votes
2answers
7k views

Cannot ping a VM from a Hyper-V host

I am facing a weird situation in my network environment. My infrastructure looks like this: I have a D-LINK DIR-635 acting as my default gateway (192.168.0.1) A physical Windows 2012 Server ...
1
vote
0answers
14 views

packet loss rate and netem

I am emulating a network with netem. I wrote a script that changes the network delay according to a linear function from 1 to 50ms every 15 seconds (with a normal variance = 5%). The packet loss is ...
245
votes
17answers
545k views

Ping a Specific Port

Just a quick sanity check here. Can you ping a specific port of a machine, and if so, can you provide an example? I'm looking for something like ping ip address portNum.
0
votes
0answers
55 views

Ping is happening but arp is not resolved

I am seeing one interesting problem. I have setup two devices connected through lan cable over eth3 interface. Now a vlan session has been created on both the interfaces. Device 2: root@10:~ ...
0
votes
1answer
186 views

MIKROTIK - Two LANs connected with switch

I have a very simple network. I have two LAN networks (192.168.2.0/24 and 192.168.3.0/24) connected via a router at each site and the routers are connected via a switch. ...
5
votes
2answers
3k views

HP Procurve 2920 VLANs with DHCP cannot ping

I have problem setting up working VLANs and DHCP server on HP Procurve 2920. My problem is that I cannot even ping computers between VLANs with static ip addresees. winXP pc on VLAN101 with ...
1
vote
3answers
2k views

Cannot ping from a bridged inteface

I am trying to bridge between eth2 and br0 from Ubuntu 11.04 within virtual box. There is network bridging to host physical machine. From the guest OS after bridging I can ping from br0 but ...
0
votes
0answers
37 views

PING fails for Windows Server 2012 FQN from a client machine

I have a simple network consists of 2 desktop machines configured with the following ethernet settings; Preferred DNS Server is the IpAddress of Windows Server 2012 R2 machine; My desktop ...
1
vote
2answers
40 views

Arp request for a non-existing host in a local network

I'm wondering why I get the following result : if I try to access a non-existing host on my local network, for instance using the command ping, I see with the tcpdump arp command that there is every ...
1
vote
1answer
51 views

PC's cant resolve the servers name

we've recently upgraded our server and we've been having an issue where the computers can't find the server without me mapping it's IP in the hosts file. They can find it when I fully qualify it with ...
0
votes
1answer
36 views

Unable to ping second Elastic IP address. Is a separate Security Group required?

I have claimed an additional Elastic IP address and associated with an running instance. It is also tied up with a secondary Private IP Address. I am unable to ping the new Elastic IP address. ...
-1
votes
2answers
45 views

Can ping server one from client 1, but can't ping client 1 from server

I set up a router on my linux machine as described here. Now I can ping the server/router from my windows client. I can also ping my linux client from my windows client. But I can not ping the windows ...
0
votes
3answers
83 views

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 ...
0
votes
1answer
63 views

How to route traffic between 2 VLANs on different subnet

I have the following problem: I have one interface eth0 with IP 172.20.51.61/24 I have configured 2 VLANS on the same machine: eth0.120 : 172.20.52.61/24 eth0.200 : 172.20.54.61/24 I also have a ...
0
votes
0answers
28 views

ping -a 'myfileserversIP' resolves name of 'mydomaincontroller' which are two different server

Have a strange problem with DNS or Netbios or something: In my Domainenvironment i'm on a domain-joined Windows 7 Client. Trying to do a reverse lookup of the ip of my dedicated fileserver (NetApp ...
3
votes
1answer
5k views

Can ping but cannot traceroute from Linux. Can do both from Windows. What gives?

So here's the issue. I have two different computers behind the same network. Both have the same gateway, IP address prefixes, etc. Computer 1: Windows XP IP 192.168.0.15 This computer can ping and ...
1
vote
2answers
62 views

Why woud ping fail but not traceroute

For a few days now I started making the interesting observation of a machine intermittently not responding to an ICMP ping, while it still responds to an ICMP based traceroute (specifically set via ...
10
votes
9answers
6k views

How to disable responses to PING

I feel like this should be a really simple thing to do, but googling and checking SF I didn't see anything. I'm trying to make my Fedora server not respond to pings, how do I do that?
0
votes
0answers
36 views

ping timeouts with light http traffic on T1 connection

I have a T1 over copper connection and started to notice that if I run ping while loading an http page (http://google.com) I get intermittent timeouts in ping. Is this normal? I expected some ...
-2
votes
2answers
59 views

Cannot ping / ssh server after installing VirtualBox on CentOs 6.6 [closed]

Our server was running fine this morning. I installed VirtualBox and rebooted the server. Since rebooting the server I do not recieve a response when pinging the IP address and I cannot connect ...
0
votes
1answer
113 views

Linux: nslookup and dig resolve $HOSTNAME, but ping doesn't

In our private network we have a Consul service discovery server (10.241.232.14) that provides a DNS interface (port 8600). We would like to set our common DNS servers to forward some queries to the ...
0
votes
0answers
22 views

Gateway to internet on CentOS 6

I have 2 CentOS 6 linux servers say hostnames cent001 and cent002 cent001 has 2 Nic's 1 Bridged and 1 Nat cent001 is able to ping google server 8.8.8.8 with the help of bridged NIC cent002 has only ...
0
votes
0answers
21 views

410 error when using website validator

I am trying to ping my website http://www.saranshsingh.com/ and it fails PING http://www.saranshsingh.com/ (198.105.254.228): 56 data bytes Request timeout for icmp_seq 0 Request timeout for icmp_seq ...
0
votes
1answer
1k 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 +--------+ ...
14
votes
12answers
29k 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 ...
0
votes
0answers
23 views

mac osx ping6 only with sudo?

today I encountered a weird problem on Mac OSX 10.8.5 and IPv6: I tried to ping6 a host that is known to be up and running (I am connected to the host in question through ssh using the same remote ...
-1
votes
1answer
92 views

Can't access (ping, tracert..) from cmd but works from putty

I am not able to ping or tracert to a remote machine from windows command line, but I am able to ping/tracert and access same machine when using putty on same windows machine. What can I do to access ...
0
votes
0answers
79 views

IP ping internally but not externally

Yesterday, my DEBIAN server went down and I have to reboot. After that, several web sites did not go up and I found that 2 IP above 3 do not ping. The main IP still works and attached web sites work. ...
1
vote
0answers
75 views

Server doesn't answer to ping just for me [closed]

I can't reach my server by any means on my own IP. But, if I try to connect to the server through a proxy, it's going well. My hosting company says the server is up too. The server is a debian + ISP ...
0
votes
0answers
47 views

Ping RTTs vs UDP Ping Pong RTTs

Network Topology (wired): ServerA - 1Gb - Switch - 10Gb - Firewall - 10Gb - ServerB Pinging ServerB from ServerA shows round trip times (RTTs) of ~1.2 milliseconds. UDP packet 'ping pong' between ...
-2
votes
2answers
296 views

Can ping by IP address but not by hostname [closed]

I have 3 Debian VM. 1)DNS 2)DHCP 3)Client DHCP looks ok. I got my fixed-address on DNS and Client like I want. When I try to ping each of them @ip it's responding. If I try to : ping dhcp But I ...
3
votes
3answers
441 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 ...