I found ports 554, 5000, 8086 and 35000 open on the B451AJD-E. 554 is RTSP. 35000 is configuration ( DahuaWiki
I streamed from it to VLC and to Blue Iris
using RTSP port 554. I could not connect to the speaker of the B451AJD-E from the Blue Iris phone app.
I accessed it with the SmartPSS desktop application using port 35000. I have used port 37777 with Amcrest
and Dahua. Many settings not available in the Lorex Home app were there. I also used iDMSS Plus and DMSS on my phone to access the doorbell. The B451AJD-E became flaky, though, about talking from my phone through its speaker with iDMSS Plus and DMSS. I could not add the B451AJD-E to Amcrest ViewPro using port 35000.
I do not know what ports 5000 and 8086 are although I gather from some Lorex documents that 5000 is for remote viewing.
I could not find a web interface to the B451AJD-E.
I like it overall, but I expect the AD410 implementation to be better. I expect Amcrest's version to work with the Amcrest phone apps, and I hope that the Amcrest apps and Blue Iris will be able to access the AD410's speaker. The Amcrest AD410 now is available on Amazon.