Procedure

1. Go to Administration → System Settings → X-Header Handling.
2. Enable or disable X-Forwarded-For Parsing .
   If this option is enabled, when Deep Discovery Web Inspector gets the X-Forwarded-For from the user request, Deep Discovery Web Inspector uses the first address of the resolved X-Forwarded-For instead of the IP address of the TCP connection to do authentication, decryption, scanning, and logging.
3. Specify the X-Header handling settings for X-Forwarded-For and X-Authenticated-User.

   Option	Description
   Keep	Retain the information found in the X-Forwarded-For or X-Authenticated-User fields.
   Remove	Remove the specified field.
   Add	Retain the specified field and additionally: For X-Forwarded-For, append the proxy IP to the field. For X-Authenticated-User, append the user info to the field. Note The appended user information is added in the following format: [DOMAIN]\[USERNAME]

4. Click Save.