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From: mo@MESSY.BELLCORE.COM
Newsgroups: comp.protocols.tcp-ip
Subject: Re: Setting up a Firewall system, proxy-ftp and proxy-telnet, ...
Message-ID: <9104261458.AA24437@bellcore.bellcore.com>
Date: 26 Apr 91 14:58:51 GMT
References: <9104261319.AA15264@frodo.jdssc.dca.mil>
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See the Cisco documentation "Packet Filtering"

I was quite impressed myself when I heard about it.

	-Mike