Iptables manual

iptables list
iptables-extensions
iptables input
iptables-saveiptables -w option
iptables documentation
iptables command list
iptables examples

The 2.4 kernel introduced iptables (also called netfilter), “Additional Resources” for instructions on how to construct iptables rules and setting up a Iptables is used to set up, maintain, and inspect the tables of IPv4 packet filter rules in the Linux kernel. Several different tables may be defined. iptables is just a command-line interface to the packet filtering functionality in netfilter. However, to keep this article simple, we won't make a distinction Iptables is used to set up, maintain, and inspect the tables of IP packet filter rules in the Linux kernel. Several different tables may be defined. All of Docker's iptables rules are added to the DOCKER chain. Do not manipulate this chain manually. If you need to add rules which load before Docker's rules,