Hi, First thanks to the guys responsible for www.isaserver.org !! Great site, good articles, specially those of Tom Shinder, I bought his book - really the book to have ! I have the following problem, I'd like to publish OWA to the internet, on a different port (not 80) ! I have ISA and OWA on the same machine, and used the article from Martin Grasdal to get it to work. Everything works fine, what I want now is to connect via a different port then 80. On the properties of my ISA-server on the TAB INCOMING WEB REQUESTS, I changed the TCP port from 80 to 3333 (I tried a few different port: 81, 33333, 60001), I checked with netstat -na, to see if the server was listening on the correct Ip-port: ok) When I connect with http://www.server.com:81/exchange/administrator I get the correct Enter network address pop-up box, where I can enter username/password/domein - I enter the correct username/password; the browser displays the two OWA-frames; but I get in both frames the Action canceled (unable to link to the web page requested). I thought it had something to do with the use of the port-syntax, so I put everything back to port 80 and tried to connect with http://www.server.com:80/exchange/administrator , but then it works . Can someone help me with this, why isn't working with an other port ???? Thanks, Chris