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Here's how to set up NordVPN in OPNsense 21. Get NordVPN@ https://nordvpn.sjv.io/c/376211/570073/7452.

i. Here are some things to check if you are having issues using OpenVPN in OPNsense 21:

- Make sure the OpenVPN plugin is installed and enabled in System - Plugins. Install or reinstall it if needed.

- Check that the OpenVPN server/client settings are configured correctly under VPN - OpenVPN according to your setup. Review server/client protocols, port numbers, certificates, and keys.

- Verify the firewall rules allow traffic properly for OpenVPN. Rules may need to be added under Firewall - Rules.

- Check the server logs under Status - System Logs - OpenVPN for any errors that could indicate issues.

- Try switching between UDP and TCP protocols in the OpenVPN server/client settings. One may work better than the other.

- Disable any proxy servers or other network settings that could interfere with the OpenVPN tunnel.

- Make sure clients have the proper VPN configuration files, keys, and certificates to connect to the OpenVPN server.

- The default OpenVPN port is 1194, so make sure that is open on the firewall if using the default.

- Check for firmware or package updates for OPNsense and OpenVPN to see if the issue is fixed.