[Cc][Ll][Ii][Ee][Nn][Tt])
        ############
        # This is a prototype setup that will protect your system somewhat
        # against people from outside your own network.
        ############

        # set these to your network and netmask and ip
        net="192.0.2.0"
        mask="255.255.255.0"
        ip="192.0.2.1"

        setup_loopback

        # Allow any traffic to or from my own net.
        ${fwcmd} add pass all from ${ip} to ${net}:${mask}
        ${fwcmd} add pass all from ${net}:${mask} to ${ip}

        # Allow TCP through if setup succeeded
        ${fwcmd} add pass tcp from any to any established

        # Allow IP fragments to pass through
        ${fwcmd} add pass all from any to any frag

        # Allow setup of incoming email
        ${fwcmd} add pass tcp from any to ${ip} 25 setup

        # Allow setup of outgoing TCP connections only
        ${fwcmd} add pass tcp from ${ip} to any setup

        # Disallow setup of all other TCP connections
        ${fwcmd} add deny tcp from any to any setup

        # Allow DNS queries out in the world
        ${fwcmd} add pass udp from ${ip} to any 53 keep-state

        # Allow NTP queries out in the world
        ${fwcmd} add pass udp from ${ip} to any 123 keep-state

        # Everything else is denied by default, unless the
        # IPFIREWALL_DEFAULT_TO_ACCEPT option is set in your kernel
        # config file.
        ;;