[FW-1] Anti-spoofing warning

[Ray Li]

I notice that my Nokia firewall shows a warning that "The 2 interface is not protected by the anti-spoofing feature.  Your network may be at risk.  In the future, it is recommended that you define anti-spoofing protection before installing the Security Policy." during bootup.  I am using CheckPoint VPN Pro NG.  To fix this problem, can someone help me configure the anti-spoofing on the CheckPoint NG version.   Thanks,   Ray