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XCCDF
Cisco IOS Router RTR Security Technical Implementation Guide
SRG-NET-000205-RTR-000016
The Cisco PE router must be configured to drop all packets with any IP options.
The Cisco PE router must be configured to drop all packets with any IP options.
An XCCDF Rule
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The Cisco PE router must be configured to drop all packets with any IP options.
Medium Severity
<VulnDiscussion>Packets with IP options are not fast switched and therefore must be punted to the router processor. Hackers who initiate denial-of-service (DoS) attacks on routers commonly send large streams of packets with IP options. Dropping the packets with IP options reduces the load of IP options packets on the router. The end result is a reduction in the effects of the DoS attack on the router and on downstream routers.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>