Great Circle Associates Firewalls
(December 1997)

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Subject: ipx and tcp/ip
From: Frank Estrada <festrada @ ecis . com>
Date: Mon, 22 Dec 1997 21:30:36 -0800
To: "firewalls @ GreatCircle . COM" <firewalls @ GreatCircle . COM>

Hi y'all,
My company runs a Netware 3.12 file server, a Notes server running on NT 
4.0, and an MTA server running NT 3.51.  The parent company is ready to 
install a WAN system which includes 2 Cisco routers and an NT firewall 
running Checkpoint's FW-1.  One Cisco router will cover their line to our 
inner network along with the firewall, and the other router will filter 
traffic from the Internet.  All this is transported via a T-1 line.  I'm 
wondering if this configuration is adequate enough to protect us from any 
infiltration.  Here is what the schematic looks like:

Parent Co.
	------------- Router 1-----Firewall------My network
					    Router 2
				Internet -----------

This setup seems a bit vulnerable to me.  Any comments would be welcomed.
Thanks in advance for your time.
Frank Estrada, Network Administrator, festrada @
 ecis .

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