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Questions tagged [ping]

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

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The packet goes through the other router

I want to connect two hosts in parallel with two different models of virtual routers. These are made redundant by VRRP. Originally, packets are sent through only one of the routers. However, when the ...
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How can I get an alert me if ping is not sent from windows service I created?

Let me explain the problem. I created a windows service that should run a method every minute, but it seems to fail at random times for an unknown reason. The application doesn't crash but some how a ...
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Can not connect to Linux instance using SSH through Putty

Just signed up for GCP account and created a Linux VM on GCP (SUSE) and having issues to connect via SSH through Putty. Also tried through CMD prompt on Windows 10 and get the same issue. Followed up ...
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"ping" fails when running from google- cloud on specific IP

I'm trying to access www.fastlane.co.il trough google cloud servers. I got the IP 81.218.67.65. When i ping it locally on my computer it works fine. Local results: Pinging www.fastlane.co.il [81.218....
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Windows 10 random time outs [migrated]

I recently started experiencing the issue that my internet just randomly "cuts out". At home I have a DSL Router and a Repeater, all from the same brand (Fritz!). The repeater is wirelessly ...
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Can ping OPC UA server, but cannot connect to it

I have an OPC UA server running on a PLC from BR Automation and would like to connect to it from UaExpert running on a Windows 10 machine. It has worked previously, but after physical re-placement of ...
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FreeNAS unable to resolve hostnames, ping of any external IP returns host's ip instead

The internal IP address of my router changed, and ever since TrueNAS has been misbehaving. None of the jails can resolve a hostname anymore. In troubleshooting this, I discovered that the client ...
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Why IPv6 neighbor solicitation uses multicast instead of unicast address?

I'm on Linux and I want to ping fe80::1234:56ff:fe12:3456%eth0 which is connected to the same Ethernet switch as my eth0 interface. I haven't yet communicated with fe80::1234:56ff:fe12:3456 so I don't ...
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Choosing Ping source interface has no effect

I'm testing some networking changes and would like to send a ping from a Ubuntu box using a dummy interface as the source address. I use -I and it looks correct: 10.90.90.90 is the dummy interface's ...
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Slow traffic(high ping) of MikroTik on Hyper-V

I am new to networking. I installed MikroTik with one Windows server and two Windows 10 clients within Hyper-V. It is routing and I can access the internet from one of the Windows VMs but it is super ...
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DNS cache: systemd-resolve and ping resolve different IP addresses

I have changed the IP address in a DNS record (on Google Cloud DNS), associated to a subdomain test.example.com From my Google Cloud VM: if I ping test.example.com, I get the old IP address if I ...
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Why when I ping the FQDN of an EvenHub in Azure I get three different IP addreses?

I got connectivity problems with azure behind a firewall, so I made an script to ping every one minute. Why when I ping the FQDN of an EvenHub in azure I get three different IP addreses? why there are ...
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Cant ping my PC on LAN until user is log in directly. destination host unreachable

It shows this when pinging from other devices in the local network From 192.168.0.191 icmp_seq=1 Destination Host Unreachable However once I log in my PC (192.168.0.191) I can ping it from other ...
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WSL PING "system error"

I have a weird PING error in WSL2, Ubuntu 20.04 distribution. When I'm doing nslookup - all ok: root@i:~# nslookup google.com Server: 172.19.224.1 Address: 172.19.224.1#53 Non-...
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Routing Issue: Cannot reach target server from local network

1. my setup: I've got an optical fibre ZTE router from my ISP for internet and telephone. My old analog phone is connected directly to the router using the dedicated phone port on my router. (For ...
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Local devices aren't reachable via VPN

I have a VPN configured on a router (router model is bintec be.ip plus). VPN Connections are successfully established by the clients using IKEv2 (router is reachable via DynDNS). Router's local ip ...
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How to check if a remote server is up through a proxy?

I have a series of lab linux server (centos/rh) that are built using an automated PXE install via kickstart file. I would like to use another automated process (ansible) to monitor when the ...
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Connection randomly timeouts

I had to develop an application that makes a request to an external web server and get the response back, sounds easy right? Well no. The problem is that not all the request I make to that server are ...
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Can't ping PetaLinux machine if both NICs on same subnet and unplug eth0

I have a PetaLinux machine (Embedded Linux on a Xilinx Zynq device, debian fork, kernel 4.19). If the two NICs are on different subnets, then I can disconnect one NIC, and the other will continue ...
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Subdomain with variable IP

Subdomains like http://3qax.munzer.webproxy.idc-lorien-apiver01-repay-action.bh-arppofind.comssets.mealcardhss-int-bh-awwwppofind.wire.2.homeetingroom.walmartmobile.cn presents a behavior that when I ...
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Permission denied (publickey) - in setting up Kubernetes cluster with Kubespray

This issue is from the following documentation How to deploy Kubernetes using Kubespray. I followed their documentation word by word and reached at this point: ansible -i inventory.ini -m ping all ...
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network issue with wsl2, nslookup works, but ping fails

I am facing bad network issue with networking on windows10 machines. tried most of the solutions available over internet. yet there is no solution. Solutions tried - Solutions related to enabling ...
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VLAN Inner Talking

I kinda forgot about CISCO in general, it had been quite a while since I last touched packet tracer. Now I'm on the PRE-deployment phase of a network at work. Long story short. -I made 2 VLAN on CISCO ...
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ping: Warning: time of day goes back (-203647us), taking countermeasures

I'm getting the below weird warning message sometimes when pinging to 8.8.8.8 (Occurrence is very low). Any idea about the root cause? $ ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data. 64 ...
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ICMP/Ping works even after adding iptables drop rule

We have an application which will configure network interface as well as iptables rules based on user configuration. Please find the iptables rules after configuring with the application Even after ...
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Spanning tree causing packet loss between a Cisco switch C3560 and Linux server running on CentOs

I am working in a network environnement where I have some Cisco Switch WS-C3560X-48 and Linux Servers running CentOS 7.7. The linux servers are connected 3 times on my switches : one admin link, one ...
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Cannot ping between 2 Windows servers

I have 2 physical Windows servers having 2 networks. One card is to access the internet and the other is for the internal network. For both servers, the internal card is assign to VLAN ID 100. Both ...
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2 votes
1 answer
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Domain only reachable over browser as long as ping is running *on the server* (also ssh doesn't work)

I have a remote machine on which I run Debian and Apache. Recently, a strange problem occured. It started with me not being able to log in by ssh anymore (I simply get a timeout) and my domain not ...
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How is ping so low, lower than theoretical limit?

According to this article, we would expect a ping of at least 60 milliseconds for 10,000km of distance: Ireland is roughly 10,000km away from California, so this is the ping we would expect. I am ...
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SSH works, ping and https get no response

Background: I'm trying to configure an ubuntu server to run a node.js application with https. I previously had everything working fine with http (configured a year ago), and I wanted to open the ...
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IPv6 connection drops after renewing an address

I have a router running OpenWrt and a machine with embedded Linux built with Yocto. I need to detect lease renewing in my C application. On my router I decrease lease time to 30 seconds. When I log on ...
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Cannot ping reachable host when using eth0 as interface

I wrote a watchdog script that checks whether the VPN server on my machine (which is reachable over the internet) is working properly. There have been random issues after long runs that required a ...
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Inconsistent results with fping

I run a home network and a privileged user on all devices on that network. In trying to learn about port scanning/host discovery I ran the following: and What I find strange is that IP address 10.83....
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Ping and tracert misbehaving on my device only

I'm posting this here instead of the networking forum because the issue is isolated on my PC Long story short: Pinging anything always results in a successful reply from my private IP Any traceroute ...
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Recommended way to ping from within container

Recently I was configuring some containers with non typical networking settings (at least non typical for me) and so I was having some problems (finalny I was able to make it working so no worries). ...
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1 answer
543 views

Can't PING domains with ipv6 address

All of a sudden, I can't ping domains with an IPv6 Address. I'm running this command: ping google.com But I don't see anything returned ... it just returns this: PING google.com(iad30s15-in-x0e....
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-2 votes
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Ubuntu Firewall blocking DNS requests to VMWARE guest with outbound traffic rules added and stateful matching done

This is a unique problem related to DNS queries(tcp/udp 53) even with correct UFW/iptables rules and does not relate to /etc/resolv.conf I can ping google DNS 8.8.8.8 but cannot resolve google.com ...
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I am able to SSH to VM but unable to PING in centOS8

I am able to SSH to a VM but unable to PING it. Even though I have stopped firewall I am facing same issue. Does anybody have any ideas? Also port forwarding is enabled for HTTPS service on that ...
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Clients not Ping each other through Strongswan VPN Tunnel

AOA, I have two clients one remote and other is local but both on same LAN i.e (192.168.137.0/24), while the UBuntu servers in which strongswan is implemented are connected to each other with ethernet ...
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I cannot ping a specific external IP through some machines inside the GCP

I have several servers configured in one instance. I'm having problems accessing a certain external IP where only a few of my machines can ping. other machines do not. I looked at the firewall rules ...
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1 answer
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Trying to setup IP addresses on my network

Here's my schema. I'm trying to set up IP addresses to be able to PING from the first floor ( etage 1 ) to the second ( etage 2). I tried setting up an IP address 192.168.233.2/24 with the gateway 192....
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persistently disable ping/ICMP response on Ubuntu 20.04

It was possible to add net.ipv4.icmp_echo_ignore_all = 1 to /etc/sysctl.conf and reload with sysctl -p. This does work for me on Ubuntu 20.04. But after a reboot, the machine responds to ICMP requests ...
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veth does not respond to other veth ping requests on same bridge

I created two veth pairs and connected them to the same bridge. However, they do not respond to ping requests. This is ubuntu 20.04. # create the interfaces and bridge sudo ip link add br0 type ...
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ping not working on some domains

I'm trying to get my head around an issue I'm facing. I can ping most sites: ping -v google.com ping: socket: Permission denied, attempting raw socket... ping: socket: Permission denied, attempting ...
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735 views

CENTOS 7 - Can ping to IP but not to related hostname

I searched and tried all suggestions in this forum sofar, but still have this problem. My small linux machine and my Imac OSX are both behind the same home router. I can ping my domain pa0esh.com ...
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2 answers
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Network time metrics

I am trying to get a sense of the different networking metrics and specifically those that are about time. I find myself lost in definitions though. From the research I have done so far I found some ...
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1 vote
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Ping Request to Virtual Machines Sometimes Drop Sometimes Not

We have installed on a server PC Hyper-V Server 2019 then install three VMs which are Ubuntu Server 20.04. There are two physical ethernet port on the server PC. We configured one of them as a private ...
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Cisco 800 Series RPing's to ISP are Intermittant

According to my ISP, our occasional internet outages are do to a router configuration problem. They say the router must RPing the ISP regularly. Failure to do so in 4 hours results in outgoing and ...
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ping returns IP from hosts file but not nslookup in windows 10 [duplicate]

We host our application in two data centers. During a production update, we point the customer traffic to datacenter1 and test the update by adding datacenter2 IP in our hosts file, where the update ...
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257 views

UFW Weird ICMP log record - Pinging is blocked

In the log records below I have replace my eth MAC address with ETH_MAC_ADDRESS the IP of my server with MY_SERVER_IP and other IPs with STRANGE_IP plus a number to distingue. Jan 29 15:11:48 cld ...
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