You can associate a BIG-IP local traffic policy to prevent a spoof of an x-forwarded-for request, where bad actors might attempt to thwart security by falsifying the IP address in a header, and pass it through the BIG-IP system.
NOTE: This video uses BIG-IP version 12.0.0
Watch video Preventing a Spoof of an X-Forwarded-For Request online, duration hours minute second in high quality that is uploaded to the channel F5 DevCentral 07 June 2016. Share the link to the video on social media so that your subscribers and friends will also watch this video. This video clip has been viewed 14,145 times and liked it 39 visitors.