D-Link DSL-2877AL - DMZ, Parental Control, and Filtering

D-Link DSL-2877AL Dual Band Wireless AC750 VDSL/ADSL2+ Modem Router User Manual
Section 3 - Web User Interface Configuration
Page 63
 Edit the rule in the top field
Click on the “Apply" button.
Delete a Rule
 Click on the checkbox in the list entry.
 Confirm the warning dialog by clicking on the "Remove Selected" button.
The rule will be deleted.