SunScreen EFS Release 3.0 Installation Guide

Operating the Firewall in Routing Mode

Operate SunScreen EFS 3.0 in routing mode if you need routing functions in addition to firewall capabilities. In this mode, SunScreen EFS 3.0 operates as both a router and a firewall, with at least two exposed IP interfaces, and a hop visible to traceroute and other network utilities. Be aware that your firewall is visible when operating in routing mode, and you have a slightly greater exposure to attack than when operating in stealth mode.

Key differences when operating SunScreen EFS 3.0 in routing, rather than stealth, mode: