D-Link DGS-1250 User Manual - Page 221

DGS-1250 Series Gigabit Ethernet Smart Managed Switch Web UI Reference Guide Parameter Server IP Profile Name Description Enter the DHCP server IP address here. Enter the DHCP server screening profile that will be used for the port(s) specified here. Click the Apply button to accept the changes made. Click the Delete button to remove the specified entry. ARP Spoofing Prevention This window is used to display and configure the ARP spoofing prevention settings. When an entry is created, ARP packets whose sender IP address matches the gateway IP address, of an entry, but its sender MAC address field does not match the gateway MAC address, of the entry, will be dropped by the system. The ASP will bypass the ARP packets whose sender IP address doesn't match the configured gateway IP address. If an ARP address matches a configured gateway's IP address, MAC address, and port list, then bypass the Dynamic ARP Inspection (DAI) check no matter if the receiving port is ARP trusted or untrusted. To view the following window, click Security > ARP Spoofing Prevention, as shown below: Figure 9-53 ARP Spoofing Prevention Window The fields that can be configured in ARP Spoofing Prevention are described below: Parameter From Port - To Port Gateway IP Gateway MAC Description Select the appropriate port range used for the configuration here. Enter the gateway IP address used here. Enter the gateway MAC address used here. Click the Apply button to accept the changes made. Click the Delete button to remove the specified entry. 212