You can easily access the configuration menu of each camera using Internet Explorer. The camera uses an address based on the IP address of the HDIP recorder starting with port 81. So, if you want to access the camera that is on channel 3 of your HDIP recorder, type http://recorder ip address:83. (Ex: http://10.10.10.100:83). Ensure that you use the http:// prefix when typing the address in the address bar of the browser.
This works with the internal and external IP address of the recorder, as well as the DDNS address.