I haven't checked to be sure, but I'm pretty sure it's port 80, whether you update from Microsoft's site or from your own SUS server. Jeff Durbin -----Original Message----- From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Mikael Johnsen Sent: 9 January 2004 10:26 PM To: thin@xxxxxxxxxxxxx Subject: [THIN] This is driving me crazy Does anyone knows what port Windows Update is using? Med venlig hilsen / Best regards Mikael Johnsen Systemadministrator / System Administrator PBJ Consult A/S Roholmsvej 12A DK-2620 Albertslund Phone: +45 43 62 74 00, Fax: +45 43 62 74 24 Email: <mailto:mjo@xxxxxx> mailto:mjo@xxxxxx, Homepage: <http://www.pbj.dk> http://www.pbj.dk