Newest ping Questions

Q&A for system and network administrators

Ping inconsistent but works just to different address

When I ping a static external IP address on my internal network it works half the time directly to the IP address but then half the time it is going to the router address first. Is there some things I ...

Ping through VPN does not work?

I have a site to site VPN from one linux machine to another linux machine Machine 1 : LAN 1: 10.0.0.254/24 Machine 2: Static routes to network: 166.83.0.0/16 There is a IPSec site to site VPN ...

Get remote system time from ICMP timestamp

I read from an article that ICMP Timestamp can be used to determine system time so I tried hping3 192.168.1.x --icmp --icmp-ts -V. The output shows len=46 ip=192.168.1.x ttl=xx id=xxxx tos=0 iplen=40 ...

VMware VSphere VM keeps getting ping and rdp unresponsive

I'm experiencing a very odd behavior on a win8.1 VM I have. After a while, it is becoming ping and RDP unresponsive, however this is still up and running in vSphere. To go around this issue, all I ...

Looking for new network endpoint for monitoring

Good afternoon, all! I'm looking for a new static, highly reliable endpoint to ping as a network connectivity monitor. We had been using Google's DNS server address, but we just had trouble with it ...

Linux : Ping all the host in the subnet

There is one solaris command to ping all the hosts in the subnet by issuing : ping -s 255.255.255.255 Is there anything similar to this one in linux ? My intention is to find one mac address as ...

How to prevent others from reverse-resolving my IP address? [closed]

I have a self-managed dedicated server. My hosting provier assigns a hostname associated with a static IP. eg. myhost.dedicated-server.com and 123.123.123.123 I'm hosting multiple domains using 123....

Cannot ping 2012 R2 host server from external addresses after installing Hyper-V

Development box running 2012 R2, Ubuntu 16.04 in a Hyper-V VM Port forwarding set up on internet-facing router to pass through to host server. Can RDP into the host server just fine. Can ping to/...

ESXi 5.5 Windows Server 2008 Std VM - Unable to ping other hosts on same subnet

I am in the position of trying to set up a server system for my company using some provided instructions. I am not an IT professional, but am the only option available at the moment. So, I apologise ...

Check a machine's up or down status without using ping

I have a function that at the moment does a quick ping to a remote machine in the same network by doing so: ping -n 1 It then evaluates the commands success (1 or 0) in order to determine whether ...

Probable network issue despite healthy ping stat?

We faced a problem with a windows network where we suspect it to be a network issue although the ping works fine. System Overview: The Windows network is accessed from multiple sites connected ...

DNS A record seems to have propagated but ping still returns old IP

I have domain that is hosted by me. The DNS provider is dreamhost. I updated the IP address of the www.domain.com to x.x.x.200 from x.x.x.198, dnscheck show that changes have propagated correctly, but ...

Windows bat file: How to process output of ping.exe at real time with for loop?

I need to run ping with -t parameter and process every line in bat script. I need to do this in real time. This code explains my problem. Commant 'ping -t 8.8.8.8' prints nothing to for loop so ...

AnyConnect Connected : General Failure ping remote VM

I have a cisco VPN anyconnect connected to a network no problem. But when I try to ping my VPN IP address it shows General failure : Now i've tried all solution like flush dns, removing any suspicous ...

The arp-scan tool found machine but i can't ping [closed]

I have two VPS that i buyed from one corporation, OS of two VPS is ubuntu and when i ran arp-scan -l on one of the both machine and i can see IP of other machine, but i havn't any type of access to ...

Can Only SSH After Ping

I have a virtual machine running RHEL 6, which I can only access after ping. [user@localhost ~]$ ssh remotehost Connection timed out. [user@localhost ~]$ ping remotehost PING remotehost.example.com (...

Measure RTT for SSH

I'm trying to figure out a way to measure RTT for SSH connection, but my google-fu is too weak (perhaps I'm asking wrong questions?). Something akin to ping , for cases where SSH works, but ICMP does ...

Strange behavior of ping response [closed]

So we have an AWS Account with our DNS Servers running in it which resolve our on-prem instances. When i ping an on-prem server, this is the response i get back: ping myServer.example.com PING ...

Domain controllers can't ping (or connect to) each other

First, some background: We have two sites connected via a FortiGate IPSEC VPN. They are each set up on different subnets - our main site is 192.168.2.x, and our second site is 192.168.0.x. We have a ...

Can high server's CPU usage cause high ping for clients? [closed]

Some users have high ping and they cannot play my multiplayer game due to it. My server application is causing CPU to always rise little by little and when I restart it, it drops. I am working on ...

fping duplicates on centos

I'm working on quite a few HP DL160 Gen8's and am getting duplicates in fping when checking to see if a host is down. It looks like this: <hostname> : duplicate for [0], 96 bytes, 0.50 ms ...

One particular dedicated server can't ping one particular IP on on a VM and vice versa

I've 3 dedicated servers. 2 of them are running multiple VMs. VMs are all using multiple IPs from different countries. When the other dedicated tries to contact a particular VM using one ip, the ...

AWS ec2 instance with Pyramid is unreachable

I can't connect to the public IP assigned to my ec2 instance. I'm writing an api with Pyramid. I'm using the pserve development.ini command to start the server/run the project, which seems to be the ...

Ping in local network pings myself

I have two computers on my local network: Laptop 192.168.2.11 Windows 8.1 Tower 192.168.2.10 Windows 7 If I use Laptop to ping Tower, which has the local IP 192.168.2.10, I will get a result from ...

OpenVPN - ping duplicates packets

There is an issue that I cannot find answer for. I have typical setup OpenVPN - 1 server with 10.8.0.0/24 subnet and a 1 client with 10.8.0.5 address. Whether the connection from the server to the ...

unable to ping VM on another machine within the same network [closed]

I can't ping from one VM to another VM on different machine. Both are connecting on the same wifi. firewall has been disable ICMP enable Network connection = NAT

Centos to Sonicwall Openswan VPN Tunnel UP but can't access Subnet behind Sonicwall

I'm trying to establish a VPN site-ti-site connection between a couple networks behind a Sonicwall 5600 and my Centos 6 Linux server. Using Openswan I have successfully created a VPN (ie there is a ...

Why would ping oscillate between receiving bytes and redirects over a VPN?

I have a VPN set up between an Ubuntu 14 VM under fusion on my side and a SonicWall on the other side. The Ubuntu VM is dedicated to the task. When I ping a remote address, the results are very ...

Can't get an nping response through an Alcatel modem - but can get ping

I am trying to use nping to ping 8.8.8.8 through an Alcatel W800 modem. I need nping because eventually I will need the ability to set some things like destination-mac. For now, I am just trying to ...

Cannot ping DNS servers

I'm in abit of a situation, here is what I'm up against: So I have two server, on different subnets. Both servers can ping each other. Server one 10.0.1.* Server two 192.168.2.* Server one can ...

ICMP echos and replies arrive, but no ping (kvm hosts and guests)

This are the steps I took building my setup: I have 2 computers (both x86 running Ubuntu 14.04 LTS). I install 2 Virtual Machines (VMs) - one on each machine. Both VMs are Ubuntu Server 14.04 LTS. On ...

Should traceroute be used to diagnose network latency issues?

I ran the traceroute command from Server A to Server B, two of the hops display a latency between 250ms to 480ms. However when running ping from Server A to Server B, the response is always within ...

hping3 not returning tcp timestamp

A recent pentest revealed that the TCP timestamp option was enabled. I have tried to reproduce the pentesters' result using hping3 --tcp-timestamp -S -p 80 xx.xx.xx.xx but the tool never returns. ...

ping a domainname in /etc/hosts

I am new in Linux. I want to test postfix. My Computer is a Mac G4 (AGP-Grafik, CPU 350 Mhz), running Debian Lenny. Gateway 192.168.2.1 The Gateway I need for the router. The router connects two ...

Ping goes through shortest prefix

The setup I have a GW with an ipsec tunnel with a range of addresses 172.17.x.x on the other side, which is mounted on top of interface ens3. The GW is connected to a subnet with prefix 172.17.3.x (...

How do I ping6 VM player?

I need to ping6 VM player(Ubuntu).In VM player, On sudo ifconfig I see inet6 addr: fe80::20c:29ff:fe73:e5f6/64 On trying ping6 from host(Ubuntu) ping6 fe80::20c:29ff:fe73:e5f6/64 It ...

Duplicate Ping Responses from single AD Domain Controller

Something I can't wrap my head around is happening with a DC on our network. I am a programmer by trade not a network engineer, but I am 99% sure this is not normal behavior. Anyway when I rebooted ...

Missing or skipped ICMP_Seq In AIX Ping

I noticed an intermittent slow response on the ping from my application server to my database server. So to diagnose, I tested using a standard ping and Telnet tests. For the telnet tests, it was ...

Hyper-V: Not able to ping my local VM from Host

I have an external ethernet switch which I'm using to connect to my VM. I'm able to access internet on my local VM. The problem is that I'm not able to ping it. I've done the following after reading ...

Printer not reachable in network

i've a low-cost printer Samsung i provided to configure in my network. i gave it a static IP and connected to my AP. i can ping (and use) the printer only if i'm connected to the same AP. why can't i ...

Server goes down for a few minutes every other day and random times

I have 2 VPS that are behaving strangely, I'll explain everything in great detail because I'm not from below, and therefore do not know exactly where the problem starts. I have 4 VPSs on a server ...

Ping to server disappear for a long time, but reappear after reverse ping to my static IP

Almost every day about 9.00 - 10.00 link to my server goes down. I have two links: direct static IP & Hamachi VPN, usually I lose only the direct link, but Hamachi still works. Most interesting ...

Linux returning single ping over IPSEC tunnel

I have a site to site IPSEC tunnel. Endpoint A is using a SonicWall firewall and has the local subnet of 192.168.1.0/24 Endpoint B is a Windows Server 2012 R2 box and has the subnet 172.16.34.0/24 I ...

Traceroute time is too long

I m using RHEL 6.5 and eth0 interaface Interface Ip is 100.x.x.x and when i traceroute to 100.x.x.x it showing one hop that too ip address of interface itself. For eg traceroute to 100.65.111.14 ...

Cannot ping CentOs 6 vm on ProxMox

I'm new here and i have a fresh proxmox system and a CentOs6 vm and 2 ip's ... one for proxMox and one for centOs vm Working stuffs: ping to proxMox's ip ping from proxMox terminal ping from centOs ...

packet rate with hping interval command

I am quite puzzled by hping command description. -i --interval wait (uX for X microseconds, for example -i u1000) --fast alias for -i u10000 (10 packets for second) --faster ...

Why fgets does not return value? [migrated]

I run ping to server for every 2 seconds. Sometimes I do plug out/in cable, and that for random sequence freezes fgets. Therefore it breaks whole cycle. Is there any option to assign a timeout? any ...

How to determine whether nameservers are working or not?

During waking up Vagrant VM I have some troubles with the network in one work space, and it works fine in another one. I'm trying to determine automatically DNS troubles (and fix it adding ...

Measure latency using ping from a 3rd server

I am new to networking and I wanted this kind of environment. is there any way to measure network latency using ping between two hosts, given the condition you are not logged into either of the hosts? ...

How can I enable Ping on an Azure Linux VM

How can I enable Ping on an Azure Linux VM, Centos 6.6 - I know we can enable this on a Windows VM, but how to do this for a Linux VM? Thanks.
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