II - Mission Support Public
Rules and Groups employed by this XCCDF Profile
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SRG-NET-000512-RTR-000007
<GroupDescription></GroupDescription>Group -
The Cisco PE router must be configured to have each VRF with the appropriate Route Distinguisher (RD).
<VulnDiscussion>An RD provides uniqueness to the customer address spaces within the MPLS L3VPN infrastructure. The concept of the VPN-IPv4 an...Rule Medium Severity -
SRG-NET-000343-RTR-000001
<GroupDescription></GroupDescription>Group -
The Cisco PE router providing MPLS Layer 2 Virtual Private Network (L2VPN) services must be configured to authenticate targeted Label Distribution Protocol (LDP) sessions used to exchange virtual circuit (VC) information using a FIPS-approved message authentication code algorithm.
<VulnDiscussion>LDP provides the signaling required for setting up and tearing down pseudowires (virtual circuits used to transport Layer 2 f...Rule Medium Severity -
SRG-NET-000512-RTR-000008
<GroupDescription></GroupDescription>Group -
The Cisco PE router providing MPLS Virtual Private Wire Service (VPWS) must be configured to have the appropriate virtual circuit identification (VC ID) for each attachment circuit.
<VulnDiscussion>VPWS is an L2VPN technology that provides a virtual circuit between two PE routers to forward Layer 2 frames between two cust...Rule High Severity -
SRG-NET-000512-RTR-000009
<GroupDescription></GroupDescription>Group -
The Cisco PE router providing Virtual Private LAN Services (VPLS) must be configured to have all attachment circuits defined to the virtual forwarding instance (VFI) with the globally unique VPN ID assigned for each customer VLAN.
<VulnDiscussion>VPLS defines an architecture that delivers Ethernet multipoint services over an MPLS network. Customer Layer 2 frames are for...Rule High Severity -
SRG-NET-000512-RTR-000010
<GroupDescription></GroupDescription>Group -
The Cisco PE router must be configured to enforce the split-horizon rule for all pseudowires within a Virtual Private LAN Services (VPLS) bridge domain.
<VulnDiscussion>A virtual forwarding instance (VFI) must be created on each participating PE router for each customer VLAN using VPLS for car...Rule Low Severity -
SRG-NET-000193-RTR-000002
<GroupDescription></GroupDescription>Group -
The Cisco PE router providing Virtual Private LAN Services (VPLS) must be configured to have traffic storm control thresholds on CE-facing interfaces.
<VulnDiscussion>A traffic storm occurs when packets flood a VPLS bridge, creating excessive traffic and degrading network performance. Traffi...Rule Medium Severity -
SRG-NET-000362-RTR-000119
<GroupDescription></GroupDescription>Group -
The Cisco PE router must be configured to implement Internet Group Management Protocol (IGMP) or Multicast Listener Discovery (MLD) snooping for each Virtual Private LAN Services (VPLS) bridge domain.
<VulnDiscussion>IGMP snooping provides a way to constrain multicast traffic at Layer 2. By monitoring the IGMP membership reports sent by hos...Rule Low Severity -
SRG-NET-000192-RTR-000002
<GroupDescription></GroupDescription>Group -
The Cisco PE router must be configured to limit the number of MAC addresses it can learn for each Virtual Private LAN Services (VPLS) bridge domain.
<VulnDiscussion>VPLS defines an architecture that delivers Ethernet multipoint services over an MPLS network. Customer Layer 2 frames are for...Rule Medium Severity -
SRG-NET-000205-RTR-000007
<GroupDescription></GroupDescription>Group -
The Cisco PE router must be configured to block any traffic that is destined to IP core infrastructure.
<VulnDiscussion>IP/MPLS networks providing VPN and transit services must provide, at the least, the same level of protection against denial o...Rule High Severity -
SRG-NET-000205-RTR-000008
<GroupDescription></GroupDescription>Group -
The Cisco PE router 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
Node 2
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