The perimeter router must be configured to block inbound packets with source Bogon IP address prefixes.

Description

<VulnDiscussion>Bogons include IP packets on the public Internet that contain addresses that are not in any range allocated or delegated by the Internet Assigned Numbers Authority (IANA) or a delegated regional Internet registry (RIR) and allowed for public Internet use. Bogons also include multicast, IETF reserved, and special purpose address space as defined in RFC 6890. Security of the Internet's routing system relies on the ability to authenticate an assertion of unique control of an address block. Measures to authenticate such assertions rely on the validation the address block forms as part of an existing allocated address block, and must be a trustable and unique reference in the IANA address registries. The intended use of a Bogon address would only be for the purpose of address spoofing in denial-of-service attacks. Hence, it is imperative that IP packets with a source Bogon address are blocked at the network’s perimeter. </VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>