I set an system in my house and I have some issues.
I am using CCTV in my house, the DVR is located far from my internet for plug it by cord, so I toke an unused Raspberry pi 3 that I had and set him as a wifi AP by share internet connection between network cards on the Raspberry pi 3
Since the Raspberry pi 3 is tiny so no monitor connect to him and it's accessible by remote from the LAN.
On the Ubuntu, It can reach the CCTV by web, but it ask to install a Microsoft OS plugin that is not available for Linux. So I cannot reach from the Ubuntu to the web CCTV.
The Mobile app works perfectly and connecting to the CCTV. from the wifi and from the web.
I am trying to set an access from my all LAN computers on the main network to the CCTV web access.
My best guess is that the problem is blocking port 8080 on the Ubuntu. But I'm not sure.
Diagram of my network : Network Diagram
Please advice how to make my LAN reply my CCTV LAN