HP 6125G HP 6125G & 6125G/XG Blade Switches Security Configuration Gui - Page 260
Configuration example, Network requirements, Configuration procedure, Configuring ARP filtering
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Step 3. Enable ARP gateway protection for a specified gateway. Command arp filter source ip-address Remarks Disabled by default Configuration example Network requirements As shown in Figure 77, Host B launches gateway spoofing attacks to Switch B. As a result, traffic that Switch B intends to send to Switch A is sent to Host B. Configure Switch B to block such attacks. Figure 77 Network diagram Configuration procedure # Configure ARP gateway protection on Switch B. system-view [SwitchB] interface gigabitethernet 1/0/1 [SwitchB-GigabitEthernet1/0/1] arp filter source 10.1.1.1 [SwitchB-GigabitEthernet1/0/1] quit [SwitchB] interface gigabitethernet 1/0/2 [SwitchB-GigabitEthernet1/0/2] arp filter source 10.1.1.1 After the configuration is complete, Switch B will discard the ARP packets whose source IP address is that of the gateway. Configuring ARP filtering To prevent gateway spoofing and user spoofing, the ARP filtering feature controls the forwarding of ARP packets on a port. The port checks the sender IP and MAC addresses in a received ARP packet against configured ARP filtering entries. If a match is found, the packet is handled normally. If not, the packet is discarded. 250
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