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XCCDF
Router Security Requirements Guide
SRG-NET-000362
The router must be configured to have Gratuitous ARP disabled on all external interfaces.
The router must be configured to have Gratuitous ARP disabled on all external interfaces.
An XCCDF Rule
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The router must be configured to have Gratuitous ARP disabled on all external interfaces.
Medium Severity
<VulnDiscussion>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.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>