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XCCDF
Cisco IOS XE Router RTR Security Technical Implementation Guide
SRG-NET-000205-RTR-000007
The Cisco PE router must be configured to block any traffic that is destined to IP core infrastructure.
The Cisco PE router must be configured to block any traffic that is destined to IP core infrastructure.
An XCCDF Rule
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The Cisco PE router must be configured to block any traffic that is destined to IP core infrastructure.
High Severity
<VulnDiscussion>IP/MPLS networks providing VPN and transit services must provide, at the least, the same level of protection against denial of service (DoS) attacks and intrusions as Layer 2 networks. Although the IP core network elements are hidden, security should never rely entirely on obscurity. IP addresses can be guessed. Core network elements must not be accessible from any external host. Protecting the core from any attack is vital for the integrity and privacy of customer traffic as well as the availability of transit services. A compromise of the IP core can result in an outage or, at a minimum, non-optimized forwarding of customer traffic. Protecting the core from an outside attack also prevents attackers from using the core to attack any customer. Hence, it is imperative that all routers at the edge deny traffic destined to any address belonging to the IP core infrastructure.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>