Single sign-on to my IIS Web service

If you do truly authenticate to the web service via user/pass in the URI (yikes by the way), then none of the built-in APM SSO configurations will help you. For this you'll need an iRule and perhaps a little more information about how the web service works. For example, after this (presumably) first request to the web service, are the credentials ever passed again, or 1) does the service generate a session token for subsequent requests, or 2) is the web service intended to be atomic and therefore expects the user/pass in every request?