Package iptables

Tools for managing Linux kernel packet filtering capabilities

http://www.netfilter.org/

The iptables utility controls the network packet filtering code in the
Linux kernel. If you need to set up firewalls and/or IP masquerading,
you should install this package.

General Commands (Section 1)
iptables-xml
iptables-xml is used to convert the output of iptables-save into an easily manipulatable XML format to STDOUT. Use I/O-redirection provided by your shell to...
System Administration (Section 8)
iptables
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...
iptables-apply
iptables-apply will try to apply a new ruleset (as output by iptables-save/read by iptables-restore) to iptables, then prompt the user whether the changes are...
iptables-extensions
ip6tables [-m name [module-options...]] [-j target-name [target-options...] iptables [-m name [module-options...]] [-j target-name [target-options...]
iptables-restore
iptables-restore and ip6tables-restore are used to restore IP and IPv6 Tables from data specified on STDIN or in file. Use I/O redirection provided by your...
iptables-save
iptables-save and ip6tables-save are used to dump the contents of IP or IPv6 Table in easily parseable format to STDOUT. Use I/O-redirection provided by your...