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Re: [FW-1] Firewall DMZ



My normal practice is to use Public IP addresses in the DMZ, but a different range. However, you can use private address space, and NAT one or more of your public addresses on the outside interface to the range.

Regards

Neil Kemp
Security Consultant
Business Sense IT Ltd
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-----Original Message-----
From: Mailing list for discussion of Firewall-1 [mailto:[email protected]] On Behalf Of Lee, Kenneth
Sent: 09 September 2003 21:45
To: [email protected]
Subject: [FW-1] Firewall DMZ

We are looking to create a dual firewall environment (external and
internal). In the middle will be the DMZ. Are DMZ IP addresses typically
hidden from the outside world? Aside from hiding this network from the
outside world, are there any additional advantages? I'm assuming that if I'm
hiding the DMZ addresses, I will need to NAT them. Are there any security
issues to NATing for inbound services (i.e. www)? Or is it recommended to
simpy route the DMZ IP addresses?

Thanks in advance

âââââââââââââââââââââââââ
 Kenneth Lee
 COGNEX Corporation
 One Vision Drive, Natick, MA 01760



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