How to hide the port the the url

Hi Nat, if that port is the port of the VS service, it's not possibe hide it in the HTTP request. You can expose your service on a VS with a standard port and use LTM policies to forward the request to VS.

regards

Leonardo

As this is a web service, you can do what has already been suggested (no iRule or policy should be needed). Configure your virtual server to listen on port 80 (ensure that port and address translation is enabled in the virtual server settings) and configure the pool members' service port to be whatever you need it to be (in this instance i assume it's 12345?).