I know that other services use the first thousand ports, and that 443 is the port to https, which is exactly the point, some firewalls block vpn connections by either blocking other ports, scanning...

Since a lot of firewalls use DPI to block VPN connections it’s highly infuriating that I cannot set the port to the OpenVPN on the router to be 443, I’m having to create a server on my pc using 443...