HP A5830 Series User Manual

227
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 5 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:
To do… Use the command… Remarks
1. Enter system view.
system-view —
2. Enable source MAC address-
based ARP attack detection
and specify the detection
mode.
arp anti-attack source-mac { filter
| monitor }
Required
Disabled by default
3. Configure the threshold.
arp anti-attack source-mac
threshold threshold-value
Optional
50 by default
4. Configure the age timer for
ARP attack detection entries.
arp anti-attack source-mac aging-
time time
Optional
300 seconds by default
5. Configure protected MAC
addresses.
arp anti-attack source-mac
exclude-mac mac-address&<1-
10>
Optional
Not configured by default
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
To do… Use the command… Remarks
Display attacking MAC addresses detected
by source MAC address-based ARP attack
detection
display arp anti-attack source-mac {
slot slot-number | interface interface-
type interface-number } [ | { begin |
exclude | include } regular-
expression ]
Available in any
view

HP A5830 Series Specifications

General

Brand	HP
Model	A5830 Series
Category	Switch
Language	English