Great Circle Associates Firewalls
(August 1997)
 

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Subject: Re: Secure Programming Standards
From: Adam Shostack <adam @ homeport . org>
Date: Thu, 28 Aug 1997 19:01:16 -0400 (EDT)
To: sacherich @ ppg . com (Sacherich, Larry)
Cc: firewalls @ GreatCircle . COM
In-reply-to: <199708281543 . AA06763 @ gateway . ppg . com> from "Sacherich, Larry" at "Aug 28, 97 11:41:00 am"

I'll say this is a FW issue.  You wouldn't believe the low quality of
some of the FW code I've run under GDB.

Also, things protected by a packet filter or plugboard need to protect
themselves against application layer attacks.

I have a set of guidelines for code reviewers; you can probably use
them as a good baseline.  See www.homeport.org/~adam/review.html

Adam



Sacherich, Larry wrote:
| Excuse me for breaking away from firewall issues for a moment, but
| since most of us are interested in Internet security, I was hoping for
| some good feedback.  Please contact me directly, as I do not want to
| abuse this forum.
| 
| Our programming staffs have ask me for standards or guidelines for
| creating applications exposed to the Internet.  These programs may
| access information through a firewall.  Realizing, of course, that poorly
| written applications may even allow a cracker to eventually gain
| access through the firewall to other systems or databases.

-- 
"It is seldom that liberty of any kind is lost all at once."
					               -Hume




References:
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From: daemonman @ juno . com (Jack Riley)
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From: "Sacherich, Larry" <sacherich @ ppg . com>
Next: Be careful about sending firewall log msgs via pagers - esp alpha msgs
From: morrow . long @ yale . edu

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