инструмент администрирования для фильтрации пакетов IPv4 / IPv6 и NAT (administration tool for IPv4/IPv6 packet filtering and NAT)
Описание (Description)
Iptables and ip6tables are used to set up, maintain, and inspect
the tables of IPv4 and IPv6 packet filter rules in the Linux
kernel. Several different tables may be defined. Each table
contains a number of built-in chains and may also contain user-
defined chains.
Each chain is a list of rules which can match a set of packets.
Each rule specifies what to do with a packet that matches. This
is called a `target', which may be a jump to a user-defined chain
in the same table.
