RE: Linux vs Windows Firewalls

I think you're missing the point that one of the users on the system may be a virus creator/launcher/infected laptop. If you want to be a good neighbour, you could(should) stop those viruses coming out through the firewall.

So the virus may be within the system (on a legal user's home machine) yet not have been let in through the gateway firewall.

laptops are transportable and pluggable into several systems, it could get infected at work, then brought ome and connected on your home intranet. Blocking viruses as they come out doesn't seem such a bad idea.

John
-----Original Message-----
From: John Andersen [mailto:jsa-qezjBH/[email protected]]
Sent: Saturday, 20 September 2003 4:51 PM
To: [email protected]
Subject: Re: [Annoyances] Linux vs Windows Firewalls



On Wednesday 10 September 2003 13:00, Ridgeway, Alan wrote:
> >A firewall is mostly used for stopping bad guys from coming in.
>
> So I guess you aren't a good Internet neighbor and don't run egress
> filtering.

Since when do you get to define what a good "internet neighbor" is?

And why is egress filtering important if no viruses can get in in the
first place?  Closeing the door to trap bugs that have gotten in
seems a little backwards to me.  Linux keeps them out.

Anything that can get in can disable any firewall you may
have set up for egress filtering, and several of the last Microsoft
worms have done similar things to virus checkers.

The idea that you can protect against a trojan that your
firewall admitted is fundamentally silly.  The only people who 
would suggest such a thing would be people with a sieve for
and operating system.

-- 
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John Andersen
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EOM 

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