Friday, September 15, 2006

ISA Server, using ports other than 443 for https

If Microsoft Internet Explorer is configured to reference a server that is running Microsoft Internet Security and Acceleration (ISA) Server as a Web proxy server, when you try to view a Secure Sockets Layer (SSL) Web site on the Internet by using a port other than 443, a blank page may appear with "Page cannot be displayed" in the title bar.

To solve the problem, a script need to be executed to change the ISA Storage. Exempe for adding the port 10000 :

Dim root
Dim tpRanges
Dim newRange
Set root = CreateObject("FPC.Root")
Set tpRanges = root.GetContainingArray.ArrayPolicy.WebProxy.TunnelPortRanges
Set newRange = tpRanges.AddRange("SSL 10000", 10000, 10000)tp
Ranges.Save

See more detailled informations in the two following links :

http://support.microsoft.com/kb/283284/en-us
http://www.microsoft.com/technet/isa/2004/plan/managingtunnelports.mspx