- Navigate to VPN | IPsec.
- On the default Tunnels tab, click on the Add P1 button:

- In the General Information section of the Edit Phase 1 page, change the Key Exchange version to IKEv2:

- Set Remote Gateway to the IP address of the second pfSense firewall.
- Enter a brief description in the Description text field.
- Enter a key in the Pre Shared Key text field:

- Change the Hash Algorithm to SHA256. All other values can be kept ...