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Check: RCKS-RTR-000620

RUCKUS ICX Router STIG: RCKS-RTR-000620 (in version v1 r1)

Title

The RUCKUS ICX router must be configured to have Gratuitous Address Resolution Protocol (ARP) disabled on all external interfaces. (Cat II impact)

Discussion

A gratuitous ARP is an ARP broadcast in which the source and destination MAC addresses are the same. It is used to inform the network about a host IP address. A spoofed gratuitous ARP message can cause network mapping information to be stored incorrectly, causing network malfunction.

Check Content

The RUCKUS ICX disables gratuitous ARP by default. Review the configuration to verify the command below does not appear. ip arp learn-gratuitous-arp If the above command is present in the configuration, this is a finding.

Fix Text

Disable learning of gratuitous ARPs: ICX(config)#no ip arp learn-gratuitous-arp

Additional Identifiers

Rule ID: SV-273629r1111036_rule

Vulnerability ID: V-273629

Group Title: SRG-NET-000362-RTR-000111

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CCIs

CCIs tied to check.

Number	Definition
CCI-002385	Protect against or limit the effects of organization-defined types of denial-of-service events.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
SC-5	Denial of Service Protection