Great Circle Associates Firewalls
(January 1995)
 

Indexed By Date: [Previous] [Next] Indexed By Thread: [Previous] [Next]

Subject: Firewalls as Panaceas
From: Jonathan Cooper <entropy @ IntNet . net>
Date: Sat, 28 Jan 1995 20:56:33 -0500 (EST)
To: Christopher Klaus <cklaus @ iss . net>
Cc: firewalls @ greatcircle . com
In-reply-to: <199501280123 . RAA03002 @ iss . net>

> precautions.  There have been quite a few cases where firewall security has
> been by-passed and that should be a lesson to not rely on just a firewall. 

   I've seen several cases of this; netpower.com was broken via an 
unpassworded PPP account; a major local corporation (in Tampa) was 
cracked and root obtained even though they had a firewall - they had an 
easily guessed account/pw pair and unpatched bugs.  The point I keep 
trying to get across to people is that a firewall is _NOT_ a magic fix.  
As someone said, security takes as much time as you put into it - but 
common sense issues (unpassworded PPP?!) shouldn't be that large of a 
problem to deal with.

   Stupidity just seems to be rampant.  At my school, people from 
E-Systems ECI came in and installed a firewall w/ SOCKS & udprelay, 
router tables, etc., and bragged openly to students and faculty about the 
security of our network "now that they'd secured it".  They almost fell 
over when I handed them a root prompt from my user prompt in 5 seconds 
via an unpatched AIX hole ...

-jon

( --------[ Jonathan D. Cooper ]--------[ entropy @
 intnet .
 net ]-------- )
( PGP 2.6.2 keyprint: 31 50 8F 82 B9 79 ED C4  5B 12 A0 35 E0 9B C0 01 )
( home page: http://taz.hyperreal.com/~entropy/ ]---[ Key-ID: 4082CCB5 )



Follow-Ups:
References:
Indexed By Date Previous: Firewalls Digest Searchre Service via Mosaic
From: "Dr. Frederick B. Cohen" <fc @ all . net>
Next: Re: Firewalls as Panaceas
From: paul @ hawksbill . sprintmrn . com (Paul Ferguson)
Indexed By Thread Previous: IP Spoofing and Vendor's attitude
From: Christopher Klaus <cklaus @ iss . net>
Next: Re: Firewalls as Panaceas
From: paul @ hawksbill . sprintmrn . com (Paul Ferguson)

Google
 
Search Internet Search www.greatcircle.com