By which interface the vpn ssl passes

Question

Hello; I currently have two Sophos routers connected in site-to-site SSL VPN. We would like to know by which interface the client router connects, because on the server router there are two WANs. 
 
 best regards

Jaydeep · Answer

Hi Yannick BABIN By default, it will try to connect on both. However, if you would like to specify a single interface, please provide the hostname or IP address of the interface in Remote Access > SSL > Settings | Override hostname. This way, it will try to connect only that interface. Please note that any change in the settings requires you to download the new SSL VPN configuration file.

BAlfson · Answer

Salut Yannick and welcome to the UTM Community! 
 Since it's the client side that initiates the connection, it attempts only to reach the FQDN that is the hostname of the server UTM. Or only the override hostname if that option has been specified. 
 Normally, I would suggest making the side with two WANs the server instead of the client. Then, in the client with two WANs, prefer one over the other with a Multipath rule. Now, if that WAN connection goes down, the UTM will attempt to re-establish using the other WAN connection. 
 Cheers - Bob