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RE: suggestions on a good firewall
From: "David Gillett" <gillettdavid () fhda edu>
Date: Wed, 21 May 2003 09:45:15 -0700

  No matter how much you harden it, a GENERAL PURPOSE operating
system includes, as a fundamental feature, the ability to load
and execute binary modules which perform arbitrary operations.
  A special-purpose OS, such as that in the Cisco PIX, or the
firmware built into most NetScreen products, can completely
dispense with this feature (or at least cripple it much more 
thoroughly).

  The result is that there is a whole class of attacks to which
a firewall hosted on an improperly/insufficiently hardened GP
OS might be subject, which can only threaten a firewall on an
SP OS if the firewall's creators are terribly incompetent.

  One might, with due diligence and a competent admin, conclude
that this threat is small enough to ignore in any specific
installation, and GP OS firewalls remain a very cost-effective 
option when that is the case.
  But if you won't or can't do that evaluation, and have to 
choose an all-round "best" -- which may also mean that you don't
have much leverage to keep others from loading additional 
applications on a GP OS box "to save money" -- then SP
("hardware") is the way to go.

David Gillett


-----Original Message-----
From: Dan.Hemphill () warehouse com [mailto:Dan.Hemphill () warehouse com]
Sent: May 21, 2003 08:45
To: jeffr76 () yahoo com; security-basics () securityfocus com;
bloodk () prodigy net mx
Subject: RE: suggestions on a good firewall


What the people ragging on Linux firewalls don't realize is that it is
indeed a hardware firewall, as it runs on its own dedicated 
hardware.  If
you were to buy a Linksys, Netgear, or even something more 
expensive like
Cisco, those are hardware firewalls too, but they STILL run 
an embedded
operating system.  A software firewall is a piece of software 
that runs on
the host it's trying to protect, such as Zone Alarm, for example.

I look forward to hearing the reasons (read: factual 
evidence) that state
why a Linux firewall such as Smoothwall or Astaro are a bad idea(tm).

-Dan

-----Original Message-----
From: Jeff [mailto:jeffr76 () yahoo com]
Sent: Tuesday, May 20, 2003 12:36 PM
To: security-basics () securityfocus com; Ing Bernardo Lopez
Subject: Re: suggestions on a good firewall


ok I'll bite
Why is Linux or the others in this thread a bad idea as a 
firewall. I see
you would recommend a hardware firewall. does this mean like 
a linksys or
netgear or raptor or one of those type of LINUX based 
firewall systems.
I have deployed Linux,Cisco, and raptors based firewall and 
the difference I
have see is support and cost.
Linux being the less cost and Cisco being the most.
if it was my network and I was making the security policy I 
would chose
Linux or raptor Cisco is just too much money for a personal 
or small company
network.
just my .02
Jeff
----- Original Message ----- 
From: "Ing Bernardo Lopez" <bloodk () prodigy net mx>
To: <security-basics () securityfocus com>
Sent: Monday, May 19, 2003 4:49 PM
Subject: Re: suggestions on a good firewall


Yea, linux as a firewall is poor than microsoft, bether use 
OpenBSD or buy
a
hardware firewall... dont be a poor freak guy...

On Saturday 17 May 2003 12:07, kerberus wrote:
Please get a real Firewall use OpenBSD and PF

On Fri, 2003-05-16 at 14:50, Tom Sevy wrote:
I 2nd ipcop as a suggestion...

-----Original Message-----
From: Mike Moore [mailto:mike () moorecomputing net]
Sent: Thursday, May 15, 2003 7:14 PM
To: security-basics () securityfocus com
Subject: RE: suggestions on a good firewall


Or even better www.ipcop.org . A lot better support and 
no abuse.

-----Original Message-----
From: Dan Tesch [mailto:dantel () rb-group com]
Sent: Wednesday, May 14, 2003 1:37 PM
To: Beaney, Derek; security-basics () securityfocus com
Subject: Re: suggestions on a good firewall


Try www.smoothwall.org

Beaney, Derek wrote:
im planning on making a firewall for my home 
system.. I am running
windowsXP / SuSE 8.1 dual boot  what I want to do is 
set up another
computer to act as a firewall for my main system. what I

want this to

do is to be able to control what enters and leaves 
my system  with
a
way to set up permissions. preferably I would like to have a

firewall

running on either a Linux or Unix os ... no m$ =) tia

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Point,
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Vigilar's industry leading curriculum includes:  Security +, Check
Point,
Hacking & Assessment, Cisco Security, Wireless Security & 
more! Register
Now! --UP TO 30% off classes in select cities--
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Thinking About Security Training? You Can't Afford Not To!

Vigilar's industry leading curriculum includes:  Security 
+, Check Point,
Hacking & Assessment, Cisco Security, Wireless Security & 
more! Register
Now!
--UP TO 30% off classes in select cities-- 
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--------------------------------------------------------------
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Thinking About Security Training? You Can't Afford Not To!

Vigilar's industry leading curriculum includes:  Security +, 
Check Point, 
Hacking & Assessment, Cisco Security, Wireless Security & 
more! Register
Now!
--UP TO 30% off classes in select cities-- 
http://www.securityfocus.com/Vigilar-security-basics
--------------------------------------------------------------
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--------------------------------------------------------------
-------------
Thinking About Security Training? You Can't Afford Not To!

Vigilar's industry leading curriculum includes:  Security +, 
Check Point, 
Hacking & Assessment, Cisco Security, Wireless Security & 
more! Register Now!
--UP TO 30% off classes in select cities-- 
http://www.securityfocus.com/Vigilar-security-basics
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--UP TO 30% off classes in select cities-- 
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