Great Circle Associates Firewalls
(October 1995)
 

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Subject: Using Unix in Firewalls
From: Darren Reed <avalon @ coombs . anu . edu . au>
Date: Wed, 1 Nov 1995 18:10:02 +1100 (EDT)
To: Firewalls @ GreatCircle . COM (Firewalls Mailing List)

Given that some mail from myself regarding testing TCP/IP was forwarded to
a list other than the original (best-of-security @
 suburbia .
 net), and that
this debate keeps coming up, I'll add a few more words.

Using any operating system which has its own TCP/IP stack (and NOT based
on BSD) is a can of worms.  This comes from recent personal experience
(killed the office mail server `accidently' :) and I've been able to repeat
it.

You might get lucky, and you might not.

Definately, though, people aren't putting TCP/IP through the same testing
that BSD would seem to have been through, when they write it today, which
is a worry.

Btw, I haven't targetted non-Unix TCP/IP yet, but I don't expect them to
be any more robust if they're not BSD based.

darren

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