My apologies here for the delay!
OK, I am a bit confused as to whether you're accessing the DVR through the router and whether you're trying to do so on the LOCAL network (local to the DVR) or from the Internet.
#1: You are saying port 8081 is for the DVR. Did you get this 8081 number from the DVR manual and/or DVR config? i.e., are you sure if this is the right number for WEB BROWSER access? Or is this number from the DVR "remote" application? If this is the case, it might not be a port which works for web browsers, only their "remote" app.
#2: IF the answer to #1 is that, yes, 8081 is supposed to be used to access the DVR from a web browser, then here is what you can do to test:
- From a computer running Windows and Internet Explorer which is on the LOCAL network (the same network that the DVR is on, NOT from the Internet), try http://DVRIPADDRESS:8081 ... DVRIPADDRESS -MUST- be the IP address of the DVR, NOT the router (local NOR WAN/Internet). The actual IP address that the DVR is using. I'm assuming the DVR can tell you what IP address it's using (if it was assigned via DHCP
, if you hard-coded it, you likely know what it is :) ).
- If the above does not work locally, then it certainly won't work using port forwarding for the router.
I hope I'm somewhat clear here :). Let me know if I'm not and/or the results of the above. Like I said here, the key (if for nothing else then my own confusion) is to be on the local network and NOT trying to access this stuff from the Internet and NOT trying to access it through the router. Once we can verify this, THEN we can move onto that step (if applicable).