Cisco IOS XE Switch RTR Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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The Cisco PE switch must be configured with Unicast Reverse Path Forwarding (uRPF) loose mode enabled on all CE-facing interfaces.
<VulnDiscussion>The uRPF feature is a defense against spoofing and denial-of-service (DoS) attacks by verifying if the source address of any ...Rule Medium Severity -
SRG-NET-000205-RTR-000016
<GroupDescription></GroupDescription>Group -
The Cisco PE switch must be configured to ignore or drop all packets with any IP options.
<VulnDiscussion>Packets with IP options are not fast-switched and therefore must be punted to the switch processor. Hackers who initiate deni...Rule Medium Severity -
SRG-NET-000193-RTR-000113
<GroupDescription></GroupDescription>Group -
The Cisco PE switch must be configured to enforce a Quality-of-Service (QoS) policy to provide preferred treatment for mission-critical applications.
<VulnDiscussion>Different applications have unique requirements and toleration levels for delay, jitter, bandwidth, packet loss, and availabi...Rule Low Severity -
SRG-NET-000193-RTR-000114
<GroupDescription></GroupDescription>Group -
The Cisco P switch must be configured to enforce a Quality-of-Service (QoS) policy to provide preferred treatment for mission-critical applications.
<VulnDiscussion>Different applications have unique requirements and toleration levels for delay, jitter, bandwidth, packet loss, and availabi...Rule Low Severity -
SRG-NET-000193-RTR-000112
<GroupDescription></GroupDescription>Group -
The Cisco switch must be configured to enforce a Quality-of-Service (QoS) policy to limit the effects of packet flooding denial-of-service (DoS) attacks.
<VulnDiscussion>DoS is a condition when a resource is not available for legitimate users. Packet flooding distributed denial-of-service (DDoS...Rule Medium Severity -
SRG-NET-000019-RTR-000003
<GroupDescription></GroupDescription>Group -
The Cisco multicast switch must be configured to disable Protocol Independent Multicast (PIM) on all interfaces that are not required to support multicast routing.
<VulnDiscussion>If multicast traffic is forwarded beyond the intended boundary, it is possible that it can be intercepted by unauthorized or ...Rule Medium Severity -
SRG-NET-000019-RTR-000004
<GroupDescription></GroupDescription>Group -
The Cisco multicast switch must be configured to bind a Protocol Independent Multicast (PIM) neighbor filter to interfaces that have PIM enabled.
<VulnDiscussion>PIM is a routing protocol used to build multicast distribution trees for forwarding multicast traffic across the network infr...Rule Medium Severity -
SRG-NET-000019-RTR-000005
<GroupDescription></GroupDescription>Group -
The Cisco multicast edge switch must be configured to establish boundaries for administratively scoped multicast traffic.
<VulnDiscussion>If multicast traffic is forwarded beyond the intended boundary, it is possible that it can be intercepted by unauthorized or ...Rule Low Severity -
SRG-NET-000362-RTR-000120
<GroupDescription></GroupDescription>Group -
The Cisco multicast Rendezvous Point (RP) switch must be configured to limit the multicast forwarding cache so that its resources are not saturated by managing an overwhelming number of Protocol Independent Multicast (PIM) and Multicast Source Discovery Protocol (MSDP) source-active entries.
<VulnDiscussion>MSDP peering between networks enables sharing of multicast source information. Enclaves with an existing multicast topology u...Rule Low Severity -
SRG-NET-000019-RTR-000013
<GroupDescription></GroupDescription>Group -
The Cisco multicast Rendezvous Point (RP) switch must be configured to filter Protocol Independent Multicast (PIM) Register messages received from the Designated switch (DR) for any undesirable multicast groups and sources.
<VulnDiscussion>Real-time multicast traffic can entail multiple large flows of data. An attacker can flood a network segment with multicast p...Rule Low Severity -
SRG-NET-000019-RTR-000014
<GroupDescription></GroupDescription>Group
Node 2
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