Couldn't you just tell the firewall specifically which IP addresses are in
the trusted network and which weren't? Failing that can you variably subnet
your class C so the firewall thinks of them as different networks?
That's assuming that you really need to avoid using NAT, which is generally
contraindicated....

--
Ben Nagy
Network Consultant, CPM&S Group of Companies
Direct Dial: (08) 8422 8319 Mobile: (0414) 411 520
 -----Original Message-----
From:   Paul Gracy [mailto:[EMAIL PROTECTED]] 
Sent:   Tuesday, May 25, 1999 2:43 AM
To:     [EMAIL PROTECTED]
Subject:        RE: 

The biggest problem with this design is not the firewall.. it's the routing
table... 

I've never tried, but I think PIX might be able to do this based on
aliases... but you really need to rethink your design and get your subnets
separated somehow or you're going to have issues, no matter whose firewall
you choose. 

IMHO.

-----Original Message-----
From: Ask - [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 21, 1999 5:53 AM
To: [EMAIL PROTECTED]
Subject: 


Hi,
Do anyone know what firewall product that can do this

Internet -------  Router -------- Firewall ----- Internal

where
Router ip is a.b.c.1
Firewall ip is a.b.c.2
Internal ip is a class C register IP addresss a.b.c.3 -- a.b.c.254

The normal firewall product is require to have one register IP and
the internal lan is in private IP address. And all internet services is
go
through the proxy Firewall.
What I am looking for is that the Firewall can able to protected the
internal Lan  with the internal ip is a range of register internet IP
address instead of the private IP (192.168.x.x.). The Firewall is only
open
up those allow services to go out like http, ftp ,  etc...

The Firewall can be software or hardware solution.

Thanks.


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