Question then, I have a small AD network at home and behind a Linksys
firewall with one external IP. I have the one internal server hosting AD,
DNS, DCHP... Etc. On the server, I have the Primary DNS pointing to itself
and the secondary DNS pointing to the ISP. All internal machines receive
DHCP with only the one DNS setting for the internal server. I can surf from
any machine. Am I exposing anything at risk in this scenario?

Cheers,
Tony

-----Original Message-----
From: John Shi [mailto:[EMAIL PROTECTED]] 
Sent: Monday, June 03, 2002 10:52 AM
To: NT 2000 Discussions
Subject: RE: Sort of OT: DMZ


I think it should be ok. Cisco suggests to put DNS on the DMZ. 

If you put the DNS in the inside network, then you would need to create a
static accesss-list on your firewall/router to allow the DNS traffic to go
out and come in. When you have a static access list for incoming traffic to
come into your inside network, you are exposing your inside network to the
outside. That is why it is good to put your DNS in the DMZ. By default,
Cisco firewall does not allow DMZ traffic to come into the inside network
unless you specifically state it. You can configure other firewalls to do so
as well.

You basic allow inside to go to DMZ, but not the other way around for
security reason.

John Shi
 
-----Original Message-----
From: Morgan, Joshua [mailto:[EMAIL PROTECTED]]
Sent: Monday, June 03, 2002 6:18 AM
To: NT 2000 Discussions
Subject: Sort of OT: DMZ


I have an Exchange Box in my DMZ running SMTP and OWA.... Is there any known
problems with Hosting DNS on it ?






Joshua Morgan
PROFITLAB
Senior Network Engineer
PH: (864) 250-1350 Ext 133
Fax: (413) 581-4936
[EMAIL PROTECTED]
http://www.profit-lab.com
http://ncontrol.info

The greatest glory is not in never failing, but in rising up every time we
fall.
-- Confucius 


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