378
Displaying and maintaining source MAC address based ARP
attack detection
Task 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
Configuration example
Network requirements
As shown in Figure 117, the hosts access the Internet through a gateway (Device). If malicious users send
a large number of ARP requests to the gateway, the gateway may crash and cannot process requests
from the clients. To solve this problem, configure source MAC address based ARP attack detection on the
gateway.
Figure 117 Network diagram
Configuration considerations
An attacker may forge a large number of ARP packets by using the MAC address of a valid host as the
source MAC address. To prevent such attacks, configure the gateway in the following steps:
1. Enable source MAC address based ARP attack detection and specify the filter mode.
2. Set the threshold.
3. Set the age timer for detection entries.
IP network
Gateway
Device
Host A Host B Host C Host D
ARP attack protection
Server
0012-3f86-e94c
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