HP 6125XLG R2306-HP 6125XLG Blade Switch Security Configuration Guide - Page 192
Configuration example, Network requirements, Configuration procedure, Configuring ARP filtering
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Configuration example Network requirements As shown in Figure 64, 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 64 Network diagram Configuration procedure # Configure ARP gateway protection on Switch B. system-view [SwitchB] interface ten-gigabitethernet 1/1/5 [SwitchB-Ten-GigabitEthernet1/1/5] arp filter source 10.1.1.1 [SwitchB-Ten-GigabitEthernet1/1/5] quit [SwitchB] interface ten-gigabitethernet 1/1/6 [SwitchB-Ten-GigabitEthernet1/1/6] arp filter source 10.1.1.1 After the configuration is complete, Ten-GigabitEthernet 1/1/5 and Ten-GigabitEthernet 1/1/6 discard the incoming ARP packets whose sender IP address is the IP address of the gateway. Configuring ARP filtering The ARP filtering feature can prevent gateway spoofing and user spoofing attacks. An interface enabled with this feature checks the sender IP and MAC addresses in a received ARP packet against permitted entries. If a match is found, the packet is handled normally. If not, the packet is discarded. Configuration guidelines Follow these guidelines when you configure ARP filtering: • You can configure a maximum of eight permitted entries on an interface. 183
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