OpenVPN Port: use 1194 UDP or 443 TCP? | Netgate Forum

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VPN — OpenVPN — Authenticating OpenVPN Users with RADIUS

OpenVPN Protocol (OpenVPN) With OpenVPN, you can tunnel any IP subnetwork or virtual ethernet adapter over a single UDP or TCP port. It uses all of the encryption, authentication, and certification features of the OpenSSL library to protect your private network traffic as it transits the internet.. OpenVPN has two authentication modes: Opening ports for OpenVPN w/Comcast ISP - ClearOS I am trying to get a site to site OpenVPN connection(s) going. I am still using ClearOS 5.2 SP1 and have OpenVPN installed, my first problem which I'm almost embarrassed to admit is that I can't get UDP 1194 & TCP 443 open externally. My ISP is Comcast, I have a Motorola Surfboard Modem Docsis 3.0 not one of their lease a modem deals.