Monoprice PID 8743 Wireless N ADSL2 Modem and Router 802 11N WPS Function 2T2R 300Mbps - Manual (Page 79)

ADSL2/2+ Router
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can just configure some of them and keep the left unchanged.
And the filtering function can also be implemented.
For example:
If you want to filter the PC at the IP address of 192.168.1.200 and
make it unable to access Internet. Then follow the instructions below:
First, click “Advanced Setup”
→ “Security” → “IP Filtering” to enter the
IP filtering setup page and then click the “Add” button to enter the page
below to configure needed parameters as below:
Then click the “Apply/Save” button to save your setting.
Note:

Principle of using “IP Filter” funciton to prohibit BT download:
when you use BT software to download data, it needs to send
request for connectting “seed” server, and when this request
passes the router, the router’s IP Filter function will hold it up and