Please note that according to our test, Guangzhou Broadband is forbidden to use port 80, and users must modify the http port to use it normally on the WAN. (Non-Guangzhou region can keep the default value of 80)
The user selects "System Settings->; Electronic map and network port ",as shown above, change the Http port number to other values (such as 8080).
Network transmission port number: the port number used for image reception. If there is only one server (hard disk video recorder) in the front end, please keep the default value of 5050.