Ewon 2005CD connection VPN to WAN IP


In the WAN connection of the Ewon 2005CD there is 1 IP address that we want to reach via VPN connection of the Ewon.
I know it is possible to connect from LAN to WAN (I tried this and it worked) but now by remote access via VPN.

Is this possible and are there any safety concerns?

Regards, Jan


Using the VPN it is only possible to connect to the LAN and not the WAN.