To configure the TCP port
In the console tree of ISA Management, right-click the applicable array and click Properties.
Where?
Internet Security and Acceleration Server
Servers and Arrays
Name
Select the Incoming Web request tab or the Outgoing Web request tab.
In TCP port, type the port number on which the ISA Server should listen for Web requests.
Notes
To open ISA Management, click Start, point to Programs, point to Microsoft ISA Server, and then click ISA Management.
By default, Microsoft Internet Security and Acceleration (ISA) Server listens for outgoing Transmission Control Protocol (TCP) requests on port 8080.
By default, ISA Server does not listen for incoming TCP requests. If you configure the TCP port for incoming Web requests, it is recommended that you set it to port 80.
DUH.
SHUX