#!/bin/sh
#----------------------------------------------------------------------------
# /etc/rc.d/fwrules-helper.common                                __FLI4LVER__
# layer-3 protocol agnostig helper functions for packet filter rules
#
# Last Update: $Id$
#----------------------------------------------------------------------------

# Checks whether passed argument is a port, a port range or a list thereof.
matches_port()
{
    echo $1 | grep -q '^[-,0-9]\+$'
}