Firewall Design

From: Andy (andy@glis.net)
Date: 01/31/02


From: andy@glis.net (Andy)
Date: 31 Jan 2002 09:40:51 -0800

OK, I am in the process of starting a new business and am looking for
the most cost effective way to protect my internal network / etc from
the web. I am going to have a T-1 connection to the net. I am
experienced with FreeBSD and Linux and was thinking of using these as
low cost firewalls. Here is my thought, and I guess I am looking for
approval on the design.

Internet -- Routers -- Etherswitch (off the switch I have my web
server and firewall)-- LAN

The etherswitch from the router will have the Firewall and my Web
Servers. The firewall (FreeBSD or Linux) will have 2 NIC cards in it.
One of the NIC cards will be connected to the same switch the router
is on, and the second is connected to another switch on the LAN. The
Firewall will run NAT behind it.

I am also planning on doing DNS services and Mail services. Where
should these be placed and does that design work for the sake of
security?

Please advise.
Thanks ,Andy



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