Raminder, this link is right choice to your problem (Thanks to Mr. Shinder). I've had been done with same case. http://www.isaserver.org/shinder/tutorials/intradomain_communications.htm regards, Furqoni -----Original Message----- From: rchhatwal@xxxxxxxxxxxxxxxxx [mailto:rchhatwal@xxxxxxxxxxxxxxxxx] Sent: 14 March 2002 01:32 To: [ISAserver.org Discussion List] Subject: [isalist] DMZ Hi, I have a back to back configuration for DMZ. I just build a new server in the dmz and am having problem joining it to domain. DC is in the internal network. I have server publishing rules in place for LDAP, Kerberos and NTP etc. Any help would be apprecaited. Thanks Raminder