FWIW I stumbled upon the fact that AnyConnect (VPN from Cisco) about 10 years ago could walk over our HTTPS/DPI proxies/firewalls at Ubisoft. Which was mostly i

FWIW I stumbled upon the fact that AnyConnect (VPN from Cisco) about 10 years ago could walk over our HTTPS/DPI proxies/firewalls at Ubisoft. Which was mostly interesting because it was Ubi itself using AnyConnect. In my efforts to use Linux (which is not supported by Cisco) I found "OpenConnect" and it's partner: "OCServe"; which are open source compatible client & server software (respectively) for the protocol On the wire traffic looks like normal HTTPS traffic, and without the SSL "CONNECT" header which DPI loves to drop as it's known used for proxies and vpn solutions. YMMV, but it's worked for me with aggressive HTTP proxies in other companies too. :)