Tl-r480t+ trouble port forwarding a Dahua DVR
Hello, I'm having trouble forwarding the ports for a http or https remote access to the DVR dahua dh-xvr1b16h webpage from the WAN (I can access withouth problems from LAN)
I have a VPN port forwarded (1194) and it works perfectly.
I also created a Python https server in a win10PC in port 7800 and I can also access from WAN using the externalIP:62000
However, the 8085/8086 ports remain closed.
I ran a Nmap scan from a external PC and checked that the 1194(VPN) is open, and the 62000(HttpServer) is ONLY open when the Python service is open. if it's not, the port is filtered. The 8085/86 is filtered.
I arrived to the conclusion that the TP-Link only opens a virtual server port when it detects that a service is listening to that port, it nothing is on then it's closed.
The problem is that the router doesn't detect the DVR and thus the port is not opened.