tcfilters

sharewall is very good

#
# Shorewall version 4 - Tcfilters File
#
# For information about entries in this file, type "man shorewall-tcfilters"
#
# See http://shorewall.net/traffic_shaping.htm for additional information.
#
###############################################################################
#INTERFACE:	SOURCE		DEST		PROTO	DEST	SOURCE
#CLASS							PORT(S)	PORT(S)
#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE