D-Link DWC-1000 User Manual page 75

Section 4 - Advanced WLAN Configuration
4. Go to Wireless > ACL > IP ACL Rules page, select the IP ACL ID from the IP ACL drop down list.
5. Click Add New Rule to add an IP ACL Rule, i.e. rule 1, to block the ICMP traffic from STA1 and STA2.
6. Repeat step 5 to add another rule to block the ICMP traffic from STA2 to STA1.
7. After configuring all the rules, add one permit rule. Adding a permit rule is mandatory to allow all other
types of traffic to flow between the source and destination, as in an AP, there is an implicit "deny all" rule
at the end of ACL.
D-Link DWC-1000 User Manual 75