These instructions will show you how to configure ExpressVPN on your pfSense device, using a pfSense OpenVPN setup.

Assumption you are configuring your network for a generic 192.168.1.0/24 network setup.

There are multiple parts to this:

1. Download the VPN configuration files from ExpressVPN
2. Configure pfSense to use the ExpressVPN configuration files
3. Create VPN Interface
4. Configure DNS
5. Configure Firewall
6. Check that VPN is working

https://www.expressvpn.com/support/vpn-setup/pfsense-with-expressvpn-openvpn/

https://nordvpn.com/tutorials/pfsense/pfsense-openvpn/

https://tunnelblick.net/cConnectedBut.html

https://forum.netgate.com/topic/139168/openvpn-server-on-virtual-ip-address-not-working