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3-Homed ISA Server – DHCP relay???

Posted on 2006-07-04
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Last Modified: 2012-06-27
Hi All,

Thanx to Keith Alabaster I now have a functional tri-homed ISA server that is happy to allow routing between the two Internal network that the ISA Server is protecting.  The only key element now is to allow only the DHCP broadcasts to pass between the two networks as this us currently not allowed.

Short and sweet, I need to be able provide computer in my LAN segment IP addresses from the DHCP server that is housed in the Server segment:

LAN Segment  <->  ISA Server  <->  Server Segment
                                    |
                V
                External Network

Thanx

For more information on the current configuration of the firewall rules:  http://www.experts-exchange.com/Security/Firewalls/Q_21906673.html
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Question by:itcoza
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LVL 51

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Keith Alabaster earned 2000 total points
ID: 17040284
Can you check the system policy on this?

It is rules 7 & 8 in the security policy to make sure they are correct?

Also
http://www.microsoft.com/technet/prodtechnol/isa/2004/plan/isadhcprelay.mspx
http://www.isaserver.org/tutorials/2004dhcprelaydmz.html


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by:itcoza
ID: 17051041
Yip... That did it.  

The steps I needed were contained in: http://www.isaserver.org/tutorials/2004dhcprelaydmz.html

Thanx Again.
The Firewall is working like a charm now.
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Expert Comment

by:Keith Alabaster
ID: 17052132
Welcome :)

Regards
keith
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