Configuring Source Mac-Based Arp Attack Detection; Configuration Procedure; Displaying And Maintaining Source Mac-Based Arp Attack Detection - HP MSR Series Configuration Manual

Configuring source MAC-based ARP attack
detection
This feature checks the number of ARP packets delivered to the CPU. If the number of packets from
the same MAC address within 5 seconds exceeds a threshold, the device adds the MAC address to
an ARP attack entry. Before the entry is aged out, the device handles the attack by using either of the
following methods:
•
Monitor—Only generates log messages.
•
Filter—Generates log messages and filters out subsequent ARP packets from that MAC
address.
You can exclude the MAC addresses of some gateways and servers from this detection. This feature
does not inspect ARP packets from those devices even if they are attackers.

Configuration procedure

To configure source MAC-based ARP attack detection:
Step
1. Enter system view.
2. Enable source MAC-based
ARP attack detection and
specify the handling method.
3. Set the threshold.
4. Set the aging timer for ARP
attack entries.
5. (Optional.) Exclude specific
MAC addresses from this
detection.
NOTE:
When an ARP attack entry is aged out, ARP packets sourced from the MAC address in the entry can
be processed correctly.
Displaying and maintaining source MAC-based ARP attack
detection
Execute display commands in any view.
Task
Display ARP attack entries detected by source
MAC-based ARP attack detection (centralized
devices in standalone mode).
Display ARP attack entries detected by source
MAC-based ARP attack detection (distributed
devices in standalone mode/centralized
devices in IRF mode).
Command
system-view
arp source-mac { filter |
monitor }
arp source-mac threshold
threshold-value
arp source-mac aging-time time
arp source-mac exclude-mac
mac-address&<1-64>
Command
display arp source-mac [ interface interface-type
interface-number ]
display arp source-mac { slot slot-number | interface
interface-type interface-number }
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Remarks
N/A
By default, this feature is
disabled.
The default threshold is 30.
By default, the lifetime is 300
seconds.
By default, no MAC address is
excluded.