iptables

iptables-legacy / ip6tables-legacy

The manual page and help for the iptables-legacy / ip6tables-legacy Linux command. xtables-legacy is the original version of iptables that uses the old getsockopt/setsockopt based kernel interface. This kernel interface has some limitations, so iptables can also be used with the newer nf_tables-based API.

iptables

The manual page and help for the iptables command