help: Configure firewall

end: sudo /opt/vyatta/sbin/vyatta-firewall.pl --update-rules
     if [ ${COMMIT_ACTION} = 'DELETE' ]; then
	sudo /opt/vyatta/sbin/vyatta-firewall.pl --teardown
        # set conntrack table size to standard 16384 entries if firewall disabled
        sudo sh -c "echo 16384 > /proc/sys/net/nf_conntrack_max"
     fi;

create:
     sudo /opt/vyatta/sbin/vyatta-firewall.pl --setup

