Introduction, Configuration procedure, Configuring arp active acknowledgement – H3C Technologies H3C WX3000E Series Wireless Switches User Manual
Page 347: Configuring arp detection
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Configuring ARP packet source MAC address
consistency check
Introduction
This feature enables a gateway device to filter out ARP packets with a source MAC address in the
Ethernet header different from the sender MAC address in the message body, so that the gateway device
can learn correct ARP entries.
Configuration procedure
To enable ARP packet source MAC address consistency check:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enable ARP packet source MAC
address consistency check.
arp anti-attack valid-check enable Disabled by default
Configuring ARP active acknowledgement
Introduction
Configure this feature on gateway devices to prevent user spoofing.
ARP active acknowledgement prevents a gateway from generating incorrect ARP entries. For more
information about its working mechanism, see ARP Attack Protection Technology White Paper.
Configuration procedure
To configure ARP active acknowledgement:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enable the ARP active
acknowledgement function.
arp anti-attack active-ack enable
Disabled by default
Configuring ARP detection
Introduction
ARP detection enables access devices to block ARP packets from unauthorized clients to prevent user
spoofing and gateway spoofing attacks.
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