Re: firewalls

From: Juergen Nieveler (juergen.nieveler.nospam_at_arcor.de)
Date: 04/13/05 

Date: Wed, 13 Apr 2005 18:34:58 +0000 (UTC)

"David H. Lipman" <DLipman~nospam~@Verizon.Net> wrote:

> FireWalls protect a user from hackers and Internet worms.

Wrong. If a user installs a worm, the worm can easily disable the
firewall if it's on the same machine that the worm got executed on.
Same goes for trojans.

> Bi-directional FireWalls can also warn and/or block Trojan activities
> if a Trojan gets installed on a computer.

Unless the trojan was designed to disable/circumvent firewalls.

> If you have a Broadband Internet connection, use of a Cable/DSL Router
> that uses Network Address Tranlation (NAT) such as a Linksys BEFSR41
> act as simplistic FireWalls while more elaborate Routers may have a
> full FireWall implementation installed.

While NAT will protect against most automated worms, it won't protect
against dedicated human attackers.

Juergen Nieveler 

-- 
Regarding security, WindowsNT is an OS with a 'Kick me' sign stuck on it's 
back.

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