I just want to check one thing, in performance layer 4 VIP if I map http profile and enable x-forwarder option can we manipulate the HTTP data like, original client IP will be visible to the user?
Layer 4 virtual server with http profile gives you limited functionality only. with this, It can't modify http header so x-forwarder will not work.
Hope it helps!
Configure a Standard Virtual Server and assign a HTTP profile to insert x-forwarded for header so that back-end server/pool members can get to know actual Client IP