Port forwarding in XG 210 v17.1.2 MR2

Question

I'm new to this firewall. Everything works fine. 
 I have some VLAN's created on one Interface. That works. 
 But I can't get port forward working. So I can't get access to different services from outside. 
 I tried this explanation https://community.sophos.com/kb/en-us/122976, but it does not work.

M8ey · Answer

Can you post a screenshot of your Firewall Rule with the NAT Rule? 
 
 One I have is:

Destination Host is the XG port my connection is on. Mapped Port is the port I forward. 
 
 The Service is as below:

What do you have?

sisdabrantas · Answer

Hi, 
 Did your sophos located behind the router? did you bridge it or act as GW for your client? i am new to this box and still consider what is the best thing to deploy it while my company has mikotik router before. if you place it behind the router so the sophos route all traffic to from lan to inet via router, not using NAT? 
 thank you