Switching connection protocol to OpenVPN UDP or TCP on Linux

1. Open the Terminal (Ctrl + Alt + T shortcut).
2. Enable OpenVPN with the following command:
   
   nordvpn set technology openvpn
    
3. Type the following command:
   
   nordvpn set protocol tcp (for OpenVPN TCP)
   
   or
   
   nordvpn set protocol udp (for OpenVPN UDP)
   
   

You can also read about the difference between TCP and UDP protocols.