Cisco NX OS Switch RTR Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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The Cisco multicast Designated switch (DR) must be configured to set the shortest-path tree (SPT) threshold to infinity to minimalize source-group (S, G) state within the multicast topology where Any Source Multicast (ASM) is deployed.
<VulnDiscussion>ASM can have many sources for the same groups (many-to-many). For many receivers, the path via the RP may not be ideal compar...Rule Medium Severity -
SRG-NET-000364-RTR-000116
<GroupDescription></GroupDescription>Group -
The Cisco Multicast Source Discovery Protocol (MSDP) switch must be configured to only accept MSDP packets from known MSDP peers.
<VulnDiscussion>MSDP peering with customer network switches presents additional risks to the DISN Core, whether from a rogue or misconfigured...Rule Medium Severity -
SRG-NET-000343-RTR-000002
<GroupDescription></GroupDescription>Group -
The Cisco Multicast Source Discovery Protocol (MSDP) switch must be configured to authenticate all received MSDP packets.
<VulnDiscussion>MSDP peering with customer network switches presents additional risks to the core, whether from a rogue or misconfigured MSDP...Rule Medium Severity -
SRG-NET-000018-RTR-000007
<GroupDescription></GroupDescription>Group -
The Cisco Multicast Source Discovery Protocol (MSDP) switch must be configured to filter received source-active multicast advertisements for any undesirable multicast groups and sources.
<VulnDiscussion>The interoperability of BGP extensions for interdomain multicast routing and MSDP enables seamless connectivity of multicast ...Rule Low Severity -
SRG-NET-000018-RTR-000008
<GroupDescription></GroupDescription>Group -
The Cisco Multicast Source Discovery Protocol (MSDP) switch must be configured to filter source-active multicast advertisements to external MSDP peers to avoid global visibility of local-only multicast sources and groups.
<VulnDiscussion>To avoid global visibility of local information, there are a number of source-group (S, G) states in a PIM-SM domain that mus...Rule Low Severity -
SRG-NET-000018-RTR-000009
<GroupDescription></GroupDescription>Group -
The Cisco Multicast Source Discovery Protocol (MSDP) switch must be configured to limit the amount of source-active messages it accepts on a per-peer basis.
<VulnDiscussion>To reduce any risk of a denial-of-service (DoS) attack from a rogue or misconfigured MSDP switch, the switch must be configur...Rule Low Severity -
SRG-NET-000512-RTR-000011
<GroupDescription></GroupDescription>Group -
The Cisco Multicast Source Discovery Protocol (MSDP) switch must be configured to use a loopback address as the source address when originating MSDP traffic.
<VulnDiscussion>Using a loopback address as the source address offers a multitude of uses for security, access, management, and scalability o...Rule Low Severity -
SRG-NET-000512-RTR-000012
<GroupDescription></GroupDescription>Group -
The Cisco switch must be configured to advertise a hop limit of at least 32 in Switch Advertisement messages for IPv6 stateless auto-configuration deployments.
<VulnDiscussion>The Neighbor Discovery protocol allows a hop limit value to be advertised by routers in a Router Advertisement message being ...Rule Low Severity -
SRG-NET-000512-RTR-000013
<GroupDescription></GroupDescription>Group
Node 2
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