Re: Firewalls

From: Greg R (webworm12_at_yes.hotmail.com)
Date: 07/17/04 

Date: Sat, 17 Jul 2004 12:45:11 -0500

Take a look at this
http://www.keir.net/firehole.html

Greg R

>On Sat, 17 Jul 2004 10:29:18 -0600, "Bruce Chambers" <bchambers@nospamcableone.net> wrote:

>Greetings --
>
> Dedicated hardware firewalls are excellent for a network's
>perimeter defense, as they "hide" all of the network's servers and
>workstations. At one time, they were all that was necessary.
> The professional grade firewalls sold by companies such as Cisco
>actually provide both hardware _and_ software protection, via their
>configuration software.
>
> But now, there is malware that can be distributed via email or web
>sites (by careless users) and installed on a network workstation to
>attack networks from within. Because the antivirus applications that
>would normally counter or mitigate this threat are purely reactive
>(they cannot detect something that has not already been identified and
>added to their virus definition files), it's advantageous to have a
>software firewall on each workstation on the LAN to stop such
>"imported" problems from spreading behind the firewall.
>
> Computer security works best when a multi-layered approach is
>used. An exploit that targets one defense's vulnerability - even a
>temporary one - can be stopped by another defense.
>
>
>Bruce Chambers

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