Lorex 2K doorbell connection fails; port closed?

[Mike5357]

I've just installed a Lorex 2k Doorbell (Model B451AJ) and have been having trouble getting it set up in mqtt, namely every addon I've been trying including this one results in an error similar to:

'01/27/25 14:26:01.0558' ERROR DahuaClient:63 -> Connection failed, Error: [Errno 111] Connect call failed ('xxx.xxx.xx.xx', 5000), Line: 55

I've enabled API_DEBUG as suggested on the Supported Models page, but still no luck.

Full Log (loops repeatedly):

'01/27/25 14:15:21.0396' INFO BaseClient:46 -> Starting to connect MQTTClient, Should connect: True
'01/27/25 14:15:21.0396' INFO BaseClient:27 -> Initialize DahuaClient
'01/27/25 14:15:21.0396' INFO BaseClient:46 -> Starting to connect DahuaClient, Should connect: True
'01/27/25 14:15:22.0396' INFO MQTTClient:55 -> Trying to connect to MQTT Broker...
'01/27/25 14:15:22.0397' INFO DahuaClient:43 -> Connecting
'01/27/25 14:15:22.0397' DEBUG selector_events:64 -> Using selector: EpollSelector
'01/27/25 14:15:22.0783' INFO MQTTClient:93 -> Connected to MQTT broker with result code: Success
'01/27/25 14:15:29.0420' ERROR DahuaClient:63 -> Connection failed, Error: [Errno 111] Connect call failed ('xxx.xxx.xx.xx', 5000), Line: 55
'01/27/25 14:15:29.0421' INFO DahuaClient:68 -> Disconnected, will try to connect in 30 seconds

From what I've been searching, it sounds like newer firmware versions may have locked down port 5000 and now use port 35000? Would this change be possible, or am I just doing something else wrong?

Edit: Current Doorbell firmware version is 2.820.010000000.28.R.20240520

[Mike5357]

Port scan:

[baudneo]

Hi, I switched to reolink but still have my old lorex 2k doorbell. I can get it set up this evening and make some changes to the code to try the new port.

With any luck, it's just switching port # to get things working.

[baudneo]

If you want to try something quick:

Edit https://github.com/baudneo/dahuavto2mqtt/blob/master/clients%2FDahuaClient.py#L50 this line to port 35000, build a new container with that modified code and try it.

So clone repo, edit file, make sure you're in the root of the repo dir, then issue docker build -t baudneo/dahuavto2mqtt:latest .

I'll add an env var to configure which port to connect to vto devices as well.

[Mike5357]

I tried changing the port and now just get:

'01/28/25 11:55:57.0939' INFO DahuaAPI:323 -> pre_login:: Preparing first message to elicit a challenge...
'01/28/25 11:56:52.0944' INFO DahuaAPI:265 -> Server sent EOF message

[baudneo]

Not good, hopefully it's something simple rather than their efforts to lock it down