D-Link DES-3028 Product Manual - Page 176

DES-3028 DES-3028P DES-3028G DES-3052 DES-3052P Layer 2 Fast Ethernet Managed Switch like the common ARP Spoofing attack that is wide spread today. This is the reason why Packet Content ACL is able to inspect any specified content of a packet in different protocol layers. Click Apply to implement changes made. NOTE: Address Resolution Protocol (ARP) is the standard for finding a host's hardware address (MAC Address). However, ARP is vulnerable as it can be easily spoofed and utilized to attack a LAN. For a more detailed explanation on how ARP works and how to employ D-Link's advanced unique Packet Content ACL to prevent ARP spoofing attack, please see Appendix E, at the end of this manual. To establish the rule for a previously created Access Profile: To edit or add a rule to a previously created profile, click the corresponding Add/Modify button under the Access Rule heading in the Access Profile Table window, the following window will be displayed. If no entry exists only the Add button will be displayed however when an entry already exists a corresponding Modify button will also be displayed. Figure 9- 6. Access Rule Table window To create a new rule set for an access profile click the Add button. A new window is displayed. To remove a previously created rule, click the corresponding button. Figure 9- 7. Access Rule Configuration window (IP) Configure the following Access Rule Configuration settings: 162