What is OpenVPN?
OpenVPN is an open source VPN protocol that uses Virtual Private Network (VPN) technologies to create secure site-to-site or point-to-point connections.
What is the OpenVPN protocol?
OpenVPN uses the TLS/SSL protocol to exchange keys and can travel through firewalls and network address translators (NATs). Written by James Jonah and published under the GNU General Public License (GPL).
OpenVPN allows peers to authenticate each other using a pre-shared username and password, certificates, or secret key. When used in a multi-client server configuration, it allows the server to initiate a certificate of authenticity for each user, using the CA and signature. It uses the OpenSSL cipher library as well as the TLSv1/SSLv3 protocols and has a number of control and security features.
What OpenVPN Ports Does NordVPN Use?
With NordVPN, you can connect via OpenVPN via both TCP and UDP.
For OpenVPN TCP connections use port 443.
For OpenVPN UDP connections use port 1194.
You can read more about TCP vs. UDP here.
How to set up OpenVPN manually with NordVPN
You can set up an OpenVPN connection manually on different devices. Here are instructions for different operating systems:
For Windows: OpenVPN GUI
For macOS: Tunnelblick
For Linux: Terminal or Network Manager
For Android: OpenVPN Connect
For iOS: OpenVPN Connect App
For Raspberry Pi: Terminal