Configuring Arp Packet Source Mac Consistency Check; Configuring Arp Active Acknowledgement; Configuring Arp Detection - HP FlexFabric 5930 Series Security Configuration Manual

[Device] arp source-mac exclude-mac 0012-3f86-e94c
Configuring ARP packet source MAC consistency
check
This feature enables a gateway to filter out ARP packets whose source MAC address in the Ethernet
header is different from the sender MAC address in the message body, so that the gateway can learn
correct ARP entries.
To enable ARP packet source MAC address consistency check:
Step
1. Enter system view.
2. Enable ARP packet source MAC address
consistency check.

Configuring ARP active acknowledgement

Configure this feature on gateways 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.
In strict mode, a gateway can learn an entry only when ARP active acknowledgement is based on the
correct ARP resolution.
To configure ARP active acknowledgement:
Step
1. Enter system view.
2. Enable the ARP active
acknowledgement function.

Configuring ARP detection

ARP detection enables access devices to block ARP packets from unauthorized clients to prevent user
spoofing and gateway spoofing attacks. ARP detection does not check ARP packets received from ARP
trusted ports.
ARP detection provides the user validity check, ARP packet validity check, and ARP restricted forwarding
functions.
If both ARP packet validity check and user validity check are enabled, the former one applies first, and
then the latter applies.
Command
system-view
arp valid-check enable
Command
system-view
arp active-ack [ strict ]
enable
159
Remarks
N/A
By default, ARP packet source
MAC address consistency check
is disabled.
Remarks
N/A
By default, ARP active acknowledgement
function is disabled.