Firewall - DMZ, LAN, INTERNET

[jose sanchez]

Hello:

I have planned to build a Linux firewall and need your
assistance: 

INTERNET -------- FIREWALL --------- DMZ
                     |
                     |
                     |
                     |
                    LAN

I was reading "Linux Firewall" book and the author
doesn't go over a firewall script with three NICs.
Other than the size of the script, how would a three
NIC firewall differs from a two NIC? How does iptables
handles it? Can traffic from the LAN can still be
NATed?

I would appreciate some hints and/or techniques on how
to build such firewall.

Thank you in advance.

=====
"An ounce of gold cannot buy an ounce of time."
- Anonymous

www.whmicro.com

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