I have installed iptables and iptables-persistent in debian . There are two iptables-rules in /etc : /etc/iptables-rules and /etc/iptables/rules.v4 . What is the difference between /etc/iptables-rules and /etc/iptables/rules.v4?
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When you first install
iptables-persistent
it will ask you if you want to save your existing rules in/etc/iptables/rules.v4
and/etc/iptables/rules.v6
These are for your IPv4 and IPv6 rulesets respectively.iptables-persistent
will run both of these commands on boot:The file
/etc/iptables-rules
is not part of the standard setup.