D-Link DIR-846 - IP Filter Configuration

D-Link DIR-846 User Manual
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Security settings
IP filter
IP filter is used to limit a user to access the Internet in sometime.
On the top of the menu bar, click More click Security settings then
click IP filter.
If you wish to create a new rule, click the + button. Click Save when
you are done. If you edit or create a rule, the following options will
appear:
Source IP address: Enter the source IP address.
Port range: Enter the source port you want to open.
Protocol type: Select the protocol of the traffic to allow or deny
(TCP, UDP, Both).
Destination IP address: Enter the destination IP address.
Port range: Enter the destination port you want to open.
Click Apply when you are done.