redirect URL rewriting in WLS8.1 and WLS9.2

Hi,
I am looking for help to solve the redirect URL issue for the following
configuration:

A hardware load balancer sits between the web clients and a weblogic cluster
(one managed server at this moment, will add more later). The web clients use
HTTPS to access the server; the load balancer converts the HTTPS to HTTP and
then forwards the request to weblogic cluster.

The problem I am trying to solve is, when a redirect is sent back to the web
client, it should be in HTTPS and use virtual host name, not the actual host
name which sends the redirect response.

I've tried the "frontend host" parameters in the admin console; but
could not see any effect. Any help will be greatly appreciated.