USG cannot use OpenVPN site-to-site port 1194 because it's reserved for...OpenVPN? | Ubiquiti Community
![Basic Ubuntu 22.04 OpenVPN Client/Server connection setup - Linux Tutorials - Learn Linux Configuration Basic Ubuntu 22.04 OpenVPN Client/Server connection setup - Linux Tutorials - Learn Linux Configuration](https://linuxconfig.org/wp-content/uploads/2022/04/04-basic-ubuntu-22-04-openvpn-client-server-connection-setup.png)
Basic Ubuntu 22.04 OpenVPN Client/Server connection setup - Linux Tutorials - Learn Linux Configuration
![nat - Static port forward 1194 to VPN server behind Cisco router - Network Engineering Stack Exchange nat - Static port forward 1194 to VPN server behind Cisco router - Network Engineering Stack Exchange](https://i.stack.imgur.com/KA0K2.png)
nat - Static port forward 1194 to VPN server behind Cisco router - Network Engineering Stack Exchange
SOLVED] 1194 tcp port open -> openvpn working, 1194 udp port open|filtered -> openvpn not working · Issue #807 · pivpn/pivpn · GitHub
![UDP port 1194 closed (started after update to 19.5) - Discussions - Sophos Firewall - Sophos Community UDP port 1194 closed (started after update to 19.5) - Discussions - Sophos Firewall - Sophos Community](https://community.sophos.com/resized-image/__size/1280x960/__key/communityserver-discussions-components-files/126/pastedimage1673714388201v2.png)