Dynamic Dns works, cant access user portal or VPN anymore

Question

Hello everyone, i have been running sophos UTM 9 for quite a while now. I used it as a router for my home network with a very simple configuration 
 ISP router-->Sophos UTM9--> Switch-->Local network 
 Ip addresses on isp router network is 192.168.0.x 
 Ip addresses on local network is 192.168.1.x 
 I have VPN connection and a dynamic DNS set up on the sophos so that i can remotely access my freenas server and some other stuff from my home network. 
 Everything has been working great until few weeks ago when i moved out to another flat with a different ISP( at least i think thats the reason), same network configuration, same servers but i'm no longer able to access user portal, or connect via VPN to my local network from remote. 
 I can still access User Portal and the admin panel from my local network, everything else seem to be working fine and i know the ddns is working fine too. 
 
 Does anyone have a clue where should i start fixing this problem?

sachingurung · Answer

Hi Andrea, 
 Is the User Portal configured on a custom port? Make sure in the Management> User portal> Allowed network tab, the VPN pool is added. Also, any help after doing a ON and OFF in the USer Portal global settings? 
 Thanks

sachingurung · Answer

Hi Andrea, 
 Take a TCP dump and check if you receive traffic on port 443 and verify if there is any DNAT that has 443 service mapped to a particular IP address; if yes, remove the DNAT policy as mapping 443 port on another IP will conflict with user portal. 
 DM me your public IP on UTM, I will try to access the User portal. 
 Thanks