Hi,

I got a basic question about firewall -- how the routing works within
a multi-homed firewall box.

Assuming that I have 3 network cards in the firewall computer (like NT 
with Raptor or UNIX with Firewall-1 ) for the connections to
Internet, DMZ and intranet,  respectively.  Usually the OS level IP forwarding
is disabled as soon as firewall software is loaded.

Now if I want to split the traffic from Internet to go to DMZ and intranet
seperatly. How do I configure the firewall ? In my understanding, I can
configure rule set for each network card but I couldn't find out an 
explicit way to direct the traffic. Does the FW software take care the
traffic directing automatically according to the available rule sets ?

Thanks in advance. 
--Chris


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