for remotely all the RTSP ports need to be different and not overlap with the other cameras, just like the server ports (sorry i didn't read all 3 pages, might have been mentioned already).
http you don't need for app/ 4200 on computer.
554 might be blocked by Verizon/AT&T (well 2 years ago had this problem, which is why the NVR changed to 8554 by default for the RTSP, but for cameras 554 is still the same)
If you have 554, i would change to something else
If you don't open either rtsp (real time streaming protocol) or server port, you will get connection failed, or live view failed on web browser. so open both (and all 3 if you are viewing on web).
http you don't need for app/ 4200 on computer.
554 might be blocked by Verizon/AT&T (well 2 years ago had this problem, which is why the NVR changed to 8554 by default for the RTSP, but for cameras 554 is still the same)
If you have 554, i would change to something else
If you don't open either rtsp (real time streaming protocol) or server port, you will get connection failed, or live view failed on web browser. so open both (and all 3 if you are viewing on web).