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

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• The static ARP entries changed from dynamic ARP entries have the same attributes as the manually
configured static ARP entries.
• The number of static ARP entries changed from dynamic ARP entries is restricted by the number of
static ARP entries that the device supports. As a result, the device may fail to change all dynamic
ARP entries into static ARP entries.
• The fixing process may take some time, during which some dynamic entries may be added or be
aged out. The newly added dynamic entries are fixed and the aged ones are not.
Use both ARP automatic scanning and fixed ARP in small-scale networks such as a cybercafe.
176BConfiguring ARP automatic scanning
Do not perform other operations when ARP automatic scanning is in progress.
ARP automatic scanning may take a long time. You can abort the scanning by clicking Interrupt on the
ARP scan page.
1. From the navigation tree, select Firewall > ARP Anti-Attack > Scan.
The ARP scanning configuration page appears.
Figure 48 ARP scanning
2. Configure ARP automatic scanning parameters as shown in 334HTable 13.
3. Click Scan to begin ARP automatic scanning.
To abort scanning, click Interrupt.
Table 13 Configuration items
Item Descri
p
tion
Interface
Select the interface to be configured to perform ARP automatic scanning.