Secure Sockets Layer virtual private network (SSL VPN) is a kind of VPN that runs on Secure Socket Layers technology and is accessible via https over web browsers.
Protocol Summary and Ports Range of OpenVPN
SSL VPN uses TCP and UDP to communicate default by port 443.
WFilter's solution for OpenVPN traffic management
Detect OpenVPN traffic in your network.
Implement a policy to block certain OpenVPN traffic.