echo "Start syn_cookies protection in proc ... "
        echo 1 >/proc/sys/net/ip_masq
        #
        if [ -x /sbin/ipchains ]; then
        echo "Start masquerade so that local network PCs can access
        outside."
        # Flush all existing rules - for safety!
        /sbin/ipchains -F forward
        # Set the timeout values ... from a UseNet post!
        /sbin/ipchains -M -S 7200 10 60
        # Set default forwarding policy to DENY; this I am confused about.
        # This apparently protects my system from another host
        #masquerading as ME!
        /sbin/ipchains -P forward DENY
        # Allow the local network to firewall/masquerade to anywhere.
 /sbin/ipchains -A forward -j MASQ -s 192.168.1.0/24 -d  0.0.0.0/0
 /sbin/ipchains -A forward -j MASQ -s 192.168.1.0/24 -d 0.0.0.0/0 -i ppp0
 /sbin/ipchains -A forward -j MASQ -s 192.168.1.0/24 -i ppp0
        echo 1 >/proc/sys/net/ipv4/ip_forward
        fi