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Legacy Forums => General Discussion (Legacy) => Topic started by: Lazo on April 17, 2002, 08:03:15 PM

Title: what is a DMZ??
Post by: Lazo on April 17, 2002, 08:03:15 PM

What is a DMZ and can I set one?? Thanks!!

Title: Re: what is a DMZ??
Post by: Jeremy on April 18, 2002, 02:26:14 AM

A DMZ is a Demiliterized zone. Which is when you have a firewall in the beguinning of your network then your web server and any other "less secure" components of your network (eg. Wireless access point). Then a firewall behind the web server. Isolating your web server from the rest of your network.
hope this helps  :0)

Title: Re: what is a DMZ??
Post by: Luke Drumm on April 18, 2002, 02:40:08 AM

In an attempt to illustrate this, here's a bit of ascii art:

O--|--O--|--O
A     B     C

Each | is a firewall.
A is the internet gateway to the rest of the world.
B is/are the DMZ server(s)
C is the internal network.

The idea is that all publicly accessable web services are provided by machine B and all the important stuff is kept on the internal LAN (in or around Machine C).
If somebody hacks their way into B then they still can't access the internal LAN due to the extra firewall between B & C.

The easiest way to impliment this with e-smith ,that I can think of', is to have two E-smith boxes like so:

A is your ISP.
One SME takes the part of B in the picture above with the only machine on its internal LAN being machine C.
Machine C is your second SME server and its connects to your local LAN (as per 'normal').


Regards,
Luke

Title: Re: what is a DMZ??
Post by: Boris on April 18, 2002, 07:05:12 AM

Often its achived by using one firewall  with 3 or more NICs and configuring rules between the interfaces.
Example: smoothwall (RED, GREEN, ORANGE interfaces).

Title: Re: what is a DMZ??
Post by: Trbonja on April 18, 2002, 07:08:20 AM

Smoothwall...Now I'm trully scared :)

Title: Re: what is a DMZ??
Post by: Lazo on April 22, 2002, 07:26:08 PM

Thanks for the info!!

Title: Re: what is a DMZ??
Post by: schotty on April 27, 2002, 08:04:56 PM

what is a black eye and how do i get one???

I just love these qustions...