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XCCDF
Cisco IOS XE Switch RTR Security Technical Implementation Guide
SRG-NET-000205-RTR-000015
The Cisco perimeter switch must be configured to block all packets with any IP options.
The Cisco perimeter switch must be configured to block all packets with any IP options.
An XCCDF Rule
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The Cisco perimeter switch must be configured to block all packets with any IP options.
Medium Severity
<VulnDiscussion>Packets with IP options are not fast switched and henceforth must be punted to the switch processor. Hackers who initiate denial-of-service (DoS) attacks on switches commonly send large streams of packets with IP options. Dropping the packets with IP options reduces the load of IP options packets on the switch. The end result is a reduction in the effects of the DoS attack on the switch and on downstream switches.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>