Security Basics mailing list archives

Re: Access from DMZ Was: AD in the DMZ . . . OK?


From: Ansgar -59cobalt- Wiechers <bugtraq () planetcobalt net>
Date: Mon, 2 Aug 2004 17:23:46 +0200

On 2004-08-02 Depp, Dennis M. wrote:
On 2004-07-30 Ansgar -59cobalt- Wiechers wrote:
If I'm reading you correctly that would still require access from the
DMZ to the DC, thus still violating the DMZ. No host in the DMZ
should ever be able to access any service inside the internal
network.

I've often wondered if this is really possible.  In today's
environment, we have to provide some access to our internal networks
either from the DMZ or from the internet.  (VPN for example.)  Is it
possible to continue to stay with this phillosophy and still not have
direct Internet connections into you secure network (even VPN
connections). 

I would say that VPNs can be considered a special case since hosts
connected through a VPN are actually part of the internal network.

There *may* be reasons to violate a DMZ, however, these reasons should
be very well evaluated and I fail to see that simplified user management
for a web application should be reason enough.

Regards
Ansgar Wiechers
-- 
"Those who would give up liberty for a little temporary safety
deserve neither liberty nor safety, and will lose both."
--Benjamin Franklin

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