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Thread: Cannot ping Ubuntu machine from other machines on network

  1. #1
    Join Date
    Apr 2018
    Beans
    1

    Cannot ping Ubuntu machine from other machines on network

    Hey guys,
    So I'm having issues with my Ubuntu 16.04 machine. I am able to ping devices on the network from the Ubuntu machine and hit all of them, but am unable to ping Ubuntu from any other device on the network. I have the firewall down on Ubuntu and my Windows 8 machine. Any ideas what I may be missing? Also note that I am by no means savvy with Ubuntu, so forgive my ignorance.
    Thanks!

  2. #2
    Join Date
    Mar 2010
    Location
    Squidbilly-Land
    Beans
    14,854
    Distro
    Ubuntu Mate 16.04 Xenial Xerus

    Re: Cannot ping Ubuntu machine from other machines on network

    Welcome to the forums.

    Ping by IP or ping by name?
    IP should always work if the network config is correct and the IP is correct on both machines involved.

    So ... to troubleshoot,
    ifconfig
    route -n
    ping {IP address}

    pinging by name isn't as easy. IP networking doesn't announce names, so either the /etc/hosts or DNS needs to be configured. If you haven't done either, using names won't work.

  3. #3
    Join Date
    Mar 2018
    Beans
    30

    Re: Cannot ping Ubuntu machine from other machines on network

    TheFu is right about what he says

    i walked in to this problem (well a solution for me) before.
    but do you have this line of code in a script or file or in /sbin/iptables?
    Code:
    $IPTABLES -A (chain name) -p icmp --icmp-type (mask or comp name (not as in company)) -j (target name)
    there might/will be multiple of this line of code cause this line can prevent or allow you to pinging to or from your machine
    Last edited by delfiler; April 19th, 2018 at 08:32 AM. Reason: grammar and spelling adjustments

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