Arp Attack Protection Configuration; Arp Attack Protection Overview; Arp Attack Protection Configuration Task List - 3Com 4500G Family Configuration Manual

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ARP Attack Protection Configuration

When configuring ARP attack Protection, go to these sections for information you are interested in:

Configuring ARP Defense Against IP Packet Attacks

Configuring ARP Packet Rate Limit

Configuring Source MAC Address Based ARP Attack Detection

Configuring ARP Packet Source MAC Address Consistency Check

Configuring ARP Active Acknowledgement

Configuring ARP Detection

For modification of arp detection mode command in V05.02.00P19 of 3Com 4500G series Ethernet

switches, For details, refer to

Security Entries/Static IP-to-MAC Bindings.

Although ARP is easy to implement, it provides no security mechanism and thus is prone to network

attacks. An attacker can send

ARP packets by acting as a trusted user or gateway. As a result, the receiving device obtains

incorrect ARP entries, and thus a communication failure occurs.

A large number of IP packets with unreachable destinations. As a result, the receiving device

continuously resolves destination IP addresses and thus its CPU is overloaded.

A large number of ARP packets to bring a great impact to the CPU.

For details about ARP attack features and types, refer to ARP Attack Protection Technology White

Currently, ARP attacks and viruses are threatening LAN security. The device can provide multiple

features to detect and prevent such attacks. This chapter mainly introduces these features.

Complete the following tasks to configure ARP attack Protection:

Enabling ARP Detection Based on DHCP Snooping Entries/802.1x

Configuring ARP Source

Configure this function on gateways

(recommended).

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