D-Link DWL-3500AP Configuration Manual page 9

Rule 1
Next, you must attach the ACL to port 0/1 and port 0/13 (the physical ports to which the
APs will be connected) so that the rules are applied to the appropriate wireless client
traffic that goes through the APs connected to the switch.
1. From the ACL Interface Configuration page,
2. Select port 0/1 from the Slot/Port drop-down menu.
3. Select IP ACL as the ACL Type.
4. Enter 1 as the sequence number, and click Submit.
5. Repeat the steps to associate ACL 100 with port 0/13.