iptables: No chain/target/match by that name.

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  • #60402

    Blake Russo
    Participant

    Also in the tutorial this is to be run on a local NTP server and not on the server your configuring in the tutorial.

    You put this in iptables on a local NTP server to accept udp traffic inbound from the server your configuring in the tutorial I believe.

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    #60401

    Blake Russo
    Participant

    David, it appears that your iptables command is invalid and does not match an iptables chain, match or target.

    Your iptable command looks to be failing because “RH-Firewall-1-INPUT” is not a valid ip tables chain. Your match (-m) and target (-j) look correct.

    You can view configured chains via CLI command iptables -L
    Verify there is a chain matching RH-Firewall-1-INPUT which your command says is the name of the chain that isn’t matching.

    Typical chains would be INPUT, OUTPUT, and FORWARD that I typically see but there can be others and user defined chains as well.
    You can create a new user defined chain to append the iptable entry to by using the iptables -N <chain name> command if you need a new one but I think in this scenario if “RH-Firewall-1-INPUT” is not listed as a valid chain you could substitute just the INPUT chain so the entry would start as “iptables -A INPUT -s …” instead.

    I would write this like so;
    Iptables INPUT -s 192.168.1.0/24 -m state –state NEW -p udp -dport 123 -j ACCEPT

    Hope this helps.

    Blake Russo / Blake.Russo@outlook.com

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