Re: What does a firewall do?

From: Wolfgang Kueter (wolfgang_at_shconnect.de)
Date: 01/20/05 

Date: Thu, 20 Jan 2005 00:07:43 +0100

Nick Roberts wrote:

> I am a computer professional who has worked in the industry for 22 years,
> on embedded systems and systems software of all kinds. I have been
> studying systems software and operating systems technology /all my life/.
> It just so happens that I am not an expert on firewall technology, and I
> would appreciate somebody being kind enough to volunteer some information
> about them.

IIRC there is something that called 'network layer model'? I think that
might have something to do with firewalls. I've heard rumours that on layer
1 something like

http://www.knipex.de/pix/katalog/produktfotos/9506230.jpg

makes a perfect firewall.

Wolfgang

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