hello,
I have the same problem. I've open a case on TAC the first ans was :"Hope things are fine at your end. I did work on the WLC and as I informed you that WLC would not work on proxy. However, there is a way where we can assign a proxy port on the WLC which would help you in using proxy server.
The command is : "config network web-auth-port yyyy", where yyyy is the proxy server port" .
Please try this out and get back to me if this does not work. "
I ghave configure it and now we are redirected to the VIP but it can't be loaded on the browser . I think that it is caused because the proxy can't load the VIP login page.
Do Anybody have any idea?