I believe it's 1494, 80 and 443 _____ From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Turman, David C. Sent: Tuesday, April 24, 2007 3:51 PM To: thin@xxxxxxxxxxxxx Subject: [THIN] Citrix on DMZ If I were to put a Presentation Server 4.0 box on a DMZ, what ports would I need to open on the firewall to have it talk to and be a member of a Presentation Server 4.0 Citrix Farm on the insdie of the firewall? I'm assuming at least 1433. Any others or problems with doing this?