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Accepted
Antonius Bloch
Asked: 2011-02-01 10:05:03 +0800 CST

Does iptables -L show rules in order of execution?

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When I'm looking at the output of iptables -L

# iptables -L
Chain INPUT (policy DROP)
target     prot opt source               destination
ACCEPT     all  --  anywhere             anywhere
ACCEPT     udp  --  anywhere             anywhere            udp dpt:1194
DROP       all  --  anywhere             ip-x.x.x.nydsl.com
DROP       all  --  anywhere             anywhere            state INVALID

I've always assumed that the rules execute in order top to bottom. But reading the documentation I haven't been able to verify that. Can anyone confirm?

iptables

1 Answers

  1. Best Answer

    Yup, it does (

    If the packet does not match, the next rule in the chain is the examined

    ). BTW, iptables-save gives a way more readable output.

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