William there are benefits of join the box to the domain, which have been covered already so I won't repeat. However I thought I would add a third scenario. This depends on the amount of hardware available in your structure, but you can create a separate domain/forest and put the is server in that and create a trust to you prod domain... Just thought for food, personally I would join the current domain. Greg ________________________________ From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Wilmar Perez Sent: Saturday, April 22, 2006 12:02 AM To: isalist@xxxxxxxxxxxxx Subject: [isalist] Join AD or not? Hello everybody We have been running ISA 2004 for about 4 months now and since then we have hesitated about joining it to our Active Directory domain. every time we read articles on the subject there are different opinions against and in favour of doing it. It would be nice if you guys share your opinion on the subject. Thank you very much Regards, Wilmar Perez