HP 6125G HP 6125G & 6125G/XG Blade Switches Security Configuration Gui - Page 248
Configuring source MAC address based ARP attack detection, Configuration procedure, attack detection
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Configuring source MAC address based ARP attack detection With this feature enabled, the device checks the source MAC address of ARP packets delivered to the CPU. It detects an attack when one MAC address sends more ARP packets in five seconds than the specified threshold. The device adds the MAC address to the attack detection table. Before the attack detection entry is aged out, the device uses either of the following detection modes to respond to the detected attack: • Monitor mode-Generates a log message. • Filter mode-Generates a log message and filters out subsequent ARP packets from the attacking MAC address. You can also configure protected MAC addresses to exclude a gateway or server from detection. A protected MAC address is excluded from ARP attack detection even if it is an attacker. Configuration procedure To configure source MAC address based ARP attack detection: Step 1. Enter system view. 2. Enable source MAC address based ARP attack detection and specify the detection mode. 3. Configure the threshold. 4. Configure the age timer for ARP attack detection entries. 5. Configure protected MAC addresses. Command system-view Remarks N/A arp anti-attack source-mac { filter | monitor } Disabled by default. arp anti-attack source-mac threshold threshold-value Optional. 50 by default. Optional. arp anti-attack source-mac aging-time time 300 seconds by default. arp anti-attack source-mac exclude-mac mac-address& Optional. Not configured by default. NOTE: After an ARP attack detection entry expires, ARP packets sourced from the MAC address in the entry can be processed normally. Displaying and maintaining source MAC address based ARP attack detection 238
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