We need more information on your current configuration for this application, do you have SSL? Does the request come from a firewall? where is the username present on the web page and what parameter use the application for store the username?
The client side is encrypted by the LTM but the the backend application does not have SSL.The user is prompted for a username and password on the web application.We want to capture the username (when its entered by the user and submitted) and also client IP address.
Traffis flow is from the user (no firewall) through the F5 towards the backend servers (Firewall present).