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XCCDF
Cisco IOS XR Router RTR Security Technical Implementation Guide
SRG-NET-000364-RTR-000200
The Cisco perimeter router must be configured to drop IPv6 undetermined transport packets.
The Cisco perimeter router must be configured to drop IPv6 undetermined transport packets.
An XCCDF Rule
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The Cisco perimeter router must be configured to drop IPv6 undetermined transport packets.
Medium Severity
<VulnDiscussion>One of the fragmentation weaknesses known in IPv6 is the undetermined transport packet. This packet contains an undetermined protocol due to fragmentation. Depending on the length of the IPv6 extension header chain, the initial fragment may not contain the layer four port information of the packet.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>