Forum Discussion
Feb 28, 2017
Are you sure it is HSTS? Since you mention and gmail, it could also be QUIC. This is a experimental protocol used by Google websites and the Chrome browser. It's an alternative for TLS. It uses port 443/UDP. The BIG-IP will not intercept this traffic. You could try blocking 443/UDP. This will cause the browser to fallback to 443/TCP and make it possible for the BIG-IP to do SSL interception.
See: https://en.wikipedia.org/wiki/QUIC