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, Tom www.isaserver.org/shinder Tom and Deb Shinder's Configuring ISA Server 2004 http://tinyurl.com/3xqb7 MVP -- ISA Firewalls -----Original Message----- From: Daniel [mailto:daniel@xxxxxxxxxxxxxxxx] Sent: Saturday, April 09, 2005 2:32 AM 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: tshinder@xxxxxxxxxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=isalist Report abuse to listadmin@xxxxxxxxxxxxx