I would imagine that the settings are to enable VPN passthrough to allow inbound connections to a VPN server on the LAN side of the router.
That isn't a setting, it's just saying you can make outgoing VPN connections. Nothing to see here folks, move along please
I know you don't need to touch those settings to establish an outbound VPN from inside a BT Smart Hub 2 because I'm doing just that at one site already (IPSec Virtual Tunnel Interface based LAN to LAN VPN). The firewall inside the BT Smart Hub 2 initiates the VPN connection to a remote firewall which is directly exposed to the internet (rather than being port forwarded to from a router). I haven't made any changes to the BT Smart Hub 2 at all to get it to work.
You mention you put in the WAN IP address of the Smart Hub 2 and you get a login page. Where are you when you do this? Are you at home connecting from inside the Smart Hub 2 or are you somewhere remote? I would be surprised if it's the latter. Also, that's not generally how you'd access a VPN - you need a VPN client.
Edited by caffn8me (Thu 19-Nov-20 19:09:57)