F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices Attack Protection Configuration Guide-6PW100

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The following matrix shows the feature and hardware compatibility:
Hardware ARP
p
acket source MAC consistenc
y
check com
p
atible
F1000-A-EI/F1000-S-EI Yes
F1000-E No
F5000 No
Firewall module No
U200-A Yes
U200-S Yes
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:
Ste
p
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.
19B
Configuring ARP active acknowledgement
ARP active acknowledgement can be configured only at the CLI.
The following matrix shows the feature and hardware compatibility:
Hardware ARP active acknowled
g
ement com
p
atible
F1000-A-EI/F1000-S-EI Yes
F1000-E No
F5000 No
Firewall module No
U200-A Yes
U200-S Yes
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.
To configure ARP active acknowledgement:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A