I have discovered no way to pass custom REQUEST headers from WebSEAL to IBM HTTP Server.
I can do this on Bluecoat reverse proxies and also Nginx, but I am trying to do this with WebSEAL.
Currently running both IBM Tivoli Access Manager/WebSEAL version 6.x and IBM Security Access Manager/WebSEAL version 7.x.
Please note, I am specifying REQUEST headers, and not custom RESPONSE headers.