Great Circle Associates Firewalls
(July 1995)
 

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Subject: Using a Sun 3 as a firewall?
From: Scott Barman <scott @ Disclosure . COM>
Date: Fri, 21 Jul 1995 10:35:41 -0400 (EDT)
To: firewalls @ greatcircle . com
In-reply-to: <950721125642_102121 . 1437_EHS131-1 @ CompuServe . COM>

I just had someone contact me wanting to change from a uucp-only
connection to a full time PPP connection.  While talking about security
he told me he had an old Sun 3 running Sun's last version of 4.1 for it
(4.1.1) with a couple of ESDI drives.  Since the machine was the
uucp-gateway he wanted to see about using it as the firewall.

Questions:
Would a Sun 3/60 with 24Mb, no graphics adapter (a real old VT100 is the
console!), 160Mb and 300Mb ESDI drives, and a V.34 modem pose a problem
firewalling a PPP connection?

Are there any "built in" security problems with SunOS 4.1.1 on the 3/60?
I am planning on replacing sendmail and completly shutting down uucp,
but what about others?  He hasn't patched anything in the OS since it
was installed (100 years ago? :-), so if patches exist, I need to find
all of them!

Finally, a little off the firewall/security subject: Does anyone know of
a "modern" OS I can load on that system?  I know BSDI is doing a SPARC
port and is not interested in Sun's old Motorola-based systems.  But how
about something like FreeBSD?  Has anyone done a port?

aTdHvAaNnKcSe!

scott barman
--
scott barman                  DISCLAIMER: I speak to anyone who will listen,
scott @
 disclosure .
 com                      and I speak only for myself.
barman @
 ix .
 netcom .
 com
  "Micro$oft and Windoze/NT will be the cause of the de-evolution of
   network security just as the original PC and BASIC was the cause of
   the de-evolution of programming."



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