The issue is trading apparent security for additional management. It is *possible* to have domain traffic cross your ISA 2004 firewall, but the important question is "why do you want to". If your argument for planting the Exch FE in a DMZ is "what if it's compromised (yakkitty-yak)?", then you've gained nothing because Exch requires that you have to create policies that allow this machine to access your AD anyway. Better that you simply place ISA between the Exch FW and the BOBOI in the first place. ------------------------------------------------------- Jim Harrison MCP(NT4, W2K), A+, Network+, PCG http://isaserver.org/Jim_Harrison/ http://isatools.org Read the help / books / articles! ------------------------------------------------------- -----Original Message----- From: Daniel [mailto:daniel@xxxxxxxxxxxxxxxx] Sent: Monday, April 11, 2005 16:40 To: [ISAserver.org Discussion List] Subject: [isalist] RE: 3homed ISA-2000 + Exch-2003 in DMZ http://www.ISAserver.org I read Tom article at isaserver.org about exch2003/ISA2004 intradomain communication publishing. I Thinking about upgrade my isa server to 2004. As I uderstand It seems a good design if you have back-to-back firewalls, and you didn't have 2 machines an 2 Exch2003 licences for exchange BE/FE. I agree is not the better design (exch03 at DMZ an member of internal domain), Jim Harrison points that its bad solution, and TOM too make apoints about it. What's a good solution, FE/BE exchange only? If I have only one Exchange/BE on the LAN, member server, member of the internal domain, its possible use for FE (win2003 smtp service) or a linux Box? thanks, Daniel =========================================== -----Original Message----- My Bad! I thought it was 2004 :( Tom www.isaserver.org/shinder Tom and Deb Shinder's Configuring ISA Server 2004 http://tinyurl.com/3xqb7 MVP -- ISA Firewalls http://www.ISAserver.org -----Original Message----- Hi Daniel, Check the chapter in the ISA/Exchange Kit on how to allow the intradomain communications between the DMZ and the Default Internal Network. Its also in the book and might be on the ISAserver.org Web site as well. HTH, -----Original Message----- From: Jim Harrison [mailto:Jim@xxxxxxxxxxxx] Sent: Saturday, April 09, 2005 10:23 AM To: [ISAserver.org Discussion List] Subject: [isalist] RE: 3homed ISA-2000 + Exch-2003 in DMZ, wich port I need to publish that the exchsrv can user the internal LAN AD/DC http://www.ISAserver.org Bad Daniel: http://support.microsoft.com/?id=329807 ------------------------------------------------------- Jim Harrison MCP(NT4, W2K), A+, Network+, PCG http://isaserver.org/Jim_Harrison/ http://isatools.org Read the help / books / articles! ------------------------------------------------------- -----Original Message----- From: Daniel [mailto:daniel@xxxxxxxxxxxxxxxx] Sent: Saturday, April 09, 2005 00:32 To: [ISAserver.org Discussion List] Subject: [isalist] 3homed ISA-2000 + Exch-2003 in DMZ, wich port I need to publish that the exchsrv can user the internal LAN AD/DC http://www.ISAserver.org Publish Exch2003 services (pop3,smtp,imap,owa) in DMZ, its OK for me. Which ports I need to publish that the AD/Domain Controller on the privante LAN can be accessed by the exchange server from DMZ, and use it de AD as users database (rpc,kerberos, ...), i.e, the Exch server will join as member of internat AD domain. Thanks, Daniel. ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: World of Windows Networking: http://www.windowsnetworking.com Leading Network Software Directory: http://www.serverfiles.com No.1 Exchange Server Resource Site: http://www.msexchange.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: jim@xxxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=isalist Report abuse to listadmin@xxxxxxxxxxxxx All mail to and from this domain is GFI-scanned.