Configuration Procedure; Configuring Arp Gateway Protection; Configuration Guidelines - HP FlexNetwork 10500 Series Security Configuration Manual

Configuration procedure

To configure ARP scanning and fixed ARP:
Step
1. Enter system view.
2. Enter Layer 3 Ethernet interface, VLAN
interface, or Layer 3 aggregate interface
view.
3. Trigger an ARP scanning.
4. Return to system view.
5. Enable fixed ARP.

Configuring ARP gateway protection

Configure this feature on interfaces not connected with a gateway to prevent gateway spoofing
attacks.
When such an interface receives an ARP packet, it checks whether the sender IP address in the
packet is consistent with that of any protected gateway. If yes, it discards the packet. If not, it handles
the packet correctly.

Configuration guidelines

Follow these guidelines when you configure ARP gateway protection:
•
You can enable ARP gateway protection for a maximum of eight gateways on an interface.
•
Do not configure both the arp filter source and arp filter binding commands on an interface.
•
If ARP gateway protection works with ARP detection, MFF, ARP snooping, and ARP fast-reply,
ARP gateway protection applies first.
Configuration procedure
To configure ARP gateway protection:
Step
1. Enter system view.
2. Enter Layer 2 Ethernet interface
and Layer 2 aggregate interface
view.
3. Enable ARP gateway protection
for the specified gateway.
Command
system-view
interface interface-type interface-number
arp scan [ start-ip-address to end-ip-address ]
quit
arp fixup
Command
system-view
interface interface-type
interface-number
arp filter source ip-address
444
Remarks
N/A
N/A
By default, ARP gateway
protection is disabled.