Ubuntu Manpages

iptables-save

dump iptables rules to stdout ip6tables-save — dump iptables rules to stdout

iptables-save [-M modprobe] [-c] [-t table]

ip6tables-save [-M modprobe] [-c] [-t table]

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 shell to write to a file.

Specify the path to the modprobe program. By default, iptables-save will inspect /proc/sys/kernel/modprobe to determine the executable's path.
include the current values of all packet and byte counters in the output
restrict output to only one table. If not specified, output includes all available tables.

None known as of iptables-1.2.1 release

Harald Welte <laforge@gnumonks.org>
Rusty Russell <rusty@rustcorp.com.au>
Andras Kis-Szabo <kisza@sch.bme.hu> contributed ip6tables-save.

iptables-apply(8),iptables-restore(8), iptables(8)

The iptables-HOWTO, which details more iptables usage, the NAT-HOWTO, which details NAT, and the netfilter-hacking-HOWTO which details the internals.