Questions tagged [ping]

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

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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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1answer
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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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ND Packets get dropped by a router in Packet tracer

I created a simple ipv6 network in packet tracer. I need it for my school project and my problem is, that I have 2 routers: 1 ISP Router with a static IPv6 address and 1 school router that provides an ...
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2answers
32 views

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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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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1answer
19 views

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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Netgear FVS318N won't allow connection to certain machines but not others

I have a client using the Netgear VPN software to connect to 4 locations. These VPNs have been setup and working for years. The locations house servers that were recently replaced, and they changed ...
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Server monitoring regularly reporting ping failed

Hosted with IBM Cloud The past week.. once or twice a day I'm getting a 'ping failed' notification from IBM followed pretty much immediately by 'service back up again' Timing seems random. I've ...
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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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1answer
51 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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1answer
80 views

iptables and SNAT spoofing

So we are working with iptables at class and I've been testing some rules in the NAT table. As far as I know SNAT changes the IP source of a packet to which the rule dictates but what I tested does ...
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Openstack Kolla VM not ssh or ping

I successfully installed OpenStack kolla Victoria release. After that i executed init-runonce and VM(cirros) is spinned up and running. I assigned floating IPs as per run-init. Everything is ...
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ODOO 10 Page wasn't loaded completely

Since a few days I can't access my ODOO instance from the external network. The home page doesn't load completely if I use a public IP address, only the logo loads. I searched in google and I found ...
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1answer
173 views

Windows to Linux Ping not working while Telnet works

On Linux we have a service running which is listening on port 9999 but when we try to check it from a Windows machine on same network with PING it says : Ping request could not find host 10.32.9.82:...
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1answer
191 views

Firewall rules does not apply to pfsense hosted machine [closed]

I am using pfsense as my home firewall and configured multi-wan setup. In addition, I have installed package 'Telegraf ' package for exporting my pfsense stats into InfluxDB, also in 'Telegraf' ...
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4answers
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Why does my domain name work whenever I ping it, but not in the browser?

my domain name, "codeplane.dev", (who's IP address is updated periodically using Google's dydns API), can be pinged and displays the correct IP address when pinged, but whenever I attempt to ...
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1answer
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Finding static IPs after reboot

I am having troubling pinging IP addresses on the local network after rebooting or clearing the ARP table. I am looking for guidance on fixing this. I have a windows 10 PC which is has a 4 port ...
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196 views

Host cannot ping VMware's NAT network adapter's gateway ip

I am using VMware workstation 15.5. My host is Windows 10 and guest is Ubuntu 18.04. Using virtual network editor I created a NAT network adapter as shown in image With NAT settings(guest ip is 192....
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1answer
63 views

Can not ping any hostname/domain when ufw enabled

Why I can't ping any domain/hostname when ufw enabled? [root@ip-172-31-23-37 ec2-user]# ping google.com ping: google.com: Name or service not known [root@ip-172-31-23-37 ec2-user]# ufw disable ...
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1answer
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ping script - host down vs host not on network

I have the following script where I am trying to differentiate between a server that is down and a server that is no longer on the network. If I use the ping command on the command line on a server ...
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1answer
39 views

One IP address does not respond to ping

Ok so here's the situation: I have a DMZ subnet, x.x.x.x, and this IP address( x.x.x.63 | 255.255.255.0 | gateway x.x.x.1) fails every ping request by any other device in the network but still works ...
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1answer
104 views

Trouble bridging remote access VPN connection to LAN

I am using Radmin VPN to create a remote access VPN between my home and office computer. On the office computer, I created a network bridge (in windows) to bridge the VPN network connection with the ...
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1answer
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Why do I get an error when pinging a windows computer by HOSTNAME from Linux Unbutu 20.04?

I have a Hyper-V Linx Ubuntu 20.04 VM I'm trying to ping a windows box in my domain via it's HOSTHAME. I've followed some threads with this suggested fix: sudo apt-get install libnss-winbind I then ...
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4answers
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I've lost my router's ip address [closed]

I have a router connected directly to my pc and I misconfigured my router's ip address and had disabled dhcp on it prior and popped off the reset button(so resetting is not possible).Due to this, I'm ...
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2answers
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Why echo request doesn't show in tcpdump?

I have two network segments connected using a IPSEC-VPN tunnel : NET#1: a.b.0.0/16 with LAN gateway a.b.0.1 NET#2: x.y.0.0/16 with LAN gateway x.y.130.1 I initiate a ping from a.b.0.1 to x.y.130.100 ...
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1answer
31 views

Ping server remotely timed out

I recently setup local Ubuntu server to host VS Code and NGINX servers which work fine on codeserver (hostname) and can ping the hostname and IP address remotely. The problem I am facing is that I ...
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1answer
1k views

Alpine ping: operation not permitted

I'm using Alpine (which uses busybox), and trying to get ping to work. First I tried installing iputils per https://serverfault.com/a/1001312 . No dice. Then I found something that said I need to set ...
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1answer
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Certain IPs cannot connect to SSH

So recently a server's Public IP changed, which meant other servers that connected to it needed to be corrected so that they can connect again. Now the weird thing is I can connect to the new server ...
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1answer
67 views

How do I know who pings my server and keep a log of it?

I believe it is a very newbie question and I am one indeed. On AWS instance, how do I know who pings my server and if is possible to keep a log of it? I added the example output from the answer by @...
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1answer
41 views

Using “CiscoRTTMonEchoICMP” probes on Cisco ASR router

I hope to calculate latency between 2 ASR router on specific VRF. Smokeping configuration looks like this: ! *** Probes *** + FPing binary = /usr/sbin/fping + CiscoRTTMonEchoICMP forks = 5 offset = ...
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1answer
427 views

cannot ping specific interface from router: (sendmsg: Operation not permitted)

I have router that I built running Arch Linux and I have a strange problem that might point to a misconfiguration. Here is my setup: LAN interface: intern1 WAN interface: extern1 LAN address: 192.168....
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1answer
92 views

Why can OpenVPN clients with static (vpn)-IP not ping the server and clients with DHCP (vpn)-ip can?

I'm building an OpenVPN network. The idea is that servers which are connected to the VPN get an fixed IP and the clients (which use services of the servers) get dhcp ip's. The servers should get an ...
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129 views

bonding issue with ethernet interface (raspbian strech)

Since i've bonded (active-backup) eth0 & wlan0 i'm no able to ping a specific device within my LAN. I'm under raspbian stretch. Linux raspberrypi 4.19.66-v7+ #1253 SMP Thu Aug 15 11:49:46 BST 2019 ...
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How to remove the old IP when transferring the server to the new Host?

When transferring an old server to a new host, the new Ispmanager gives the old Ip when pinging my sites. How to change?
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IPv6 tunneling with NetAssist: Stopped Working

I've been working with NetAssist Tunnel Broker for couple of months, and everything worked (not perfectly, but worked). Recently I have recreated my network interface for IPv6 tunneling he-ipv6 and ...
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1answer
577 views

firewalld causing nmap to return host seems down

I've two machines, server1 and server2. On server2, I stop firewalld. [root@server2 ~]# systemctl stop firewalld From server1, nmap returns Host is up. [root@server1 ~]$ nmap -sn server2 Starting ...
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1answer
23 views

How can I map a service in Google Cloud Servers?

I am in the process of making our application into smaller services. I add the new services on a back end server (i.e. not accessible to public) and then make entries in /etc/hosts file of our web ...
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1answer
161 views

why is nexthop ip print reversed with the ping command?

This question hit me today while I'm quite used to see it reversed, but actually, why is the nexthop ip noted reversed in the ping command ? PING 10.8.0.8 (10.8.0.8) 56(84) bytes of data. From 10.8.0....
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87 views

Sometime nmap reports port as open or filtered

I was trying to "ping" my router from outside network. Regular ping is blocked so I tried nmap: nmap -Pn <IP> Starting Nmap 7.80 ( https://nmap.org ) at 2020-08-13 08:39 UTC Nmap scan ...
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0answers
49 views

Kubernetes 1.18.6 : inter pod communication on google cloud custom vm nodes not working

[Problem statement] Ping from pod {busybox-minion1} running on worker1 {named as : minion1} to the pod {busybox-minion2} on worker2 {named as : minion2} is not working. It is a three-node cluster ...
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1answer
227 views

ping command is not printing result to the console

When I am trying to ping the server, the output of ping command is not coming to the console. ads@3290:~#ping ksr-india01 PING ksr-india01.uit.com (10.105.34.184) 56(84) bytes of data. ^C --- ksr-...
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1answer
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Automate SSH login WITH password [closed]

Before this question gets deleted, I already read this, this, this, and this; and most of these links don't answer my question; because: I do need a key AND password I run multiple servers (50+), and ...
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1answer
111 views

Can't ping host with two interfaces

I am trying to figure out why a network interface is not pingable and is returning an ICMP type 3 code 1 response: Destination unreachable (host unreachable). I am trying to ping from host1 to one of ...
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1answer
156 views

PING between Database Server & App Server - Ping from App Server is Request TimeOut But Ping from DB Server is Success

I have a Database Server and Application Server. Application Server is hosted with an application that has been fetching data from DB server. This is working fine but when I tried to ping DB server ...
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1answer
753 views

High ping latency over direct Gigabit Ethernet link on Enterprise-class hardware

FINAL EDIT 7/7 Multiple cable, port, and device substitutions have narrowed this to the Comcast modem, and on all 8 of its Ethernet ports. Given, as the comments say, this is a closed device, and ...
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1answer
78 views

Can't ping one system through VPN, but I can ping the rest of the network

Working from home I connect through a VPN to the VPN server of the office configured on top of ClearOS. From home I can ping all the office except one system. A Compact Rio from National Instruments. ...
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Laptop A is sometimes blocked from pinging laptop B. Pinging in reverse unblocks it

I have had this problem dozens of times, ususally spaced out by days or even weeks. Router R can ping laptop A, laptop B, and the internet (0% packet loss in each case). Laptop A can ping router R ...

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