Hello,
sorry for delay, but I did a lot of tests to see how it works and what's wrong.
Now, after few tests:
- XL axiata (4G ISP) filters all ports except: 21, 53, 554, 1723, 8080 (see with NMAP, and scan with the different IPs of my cams)
- With this IPS, my router gives me another IP than...