Can't see the WAN interface

Hello,

I have recently created a SOPHOS UTM 9 Firewall from the Amazon Cloud Marketplace.

I am connected to the GUI through an Elastic IP (public IP address).

I have noticed that under Interfaces, I cannot see the WAN interface, only the internal one.

I cannot establish IPSEC VPN tunnels without the WAN interface.

Any kind of help would be much appreciated!