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Cisco IOS XE Switch RTR Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • The MPLS switch with RSVP-TE enabled must be configured with message pacing to adjust maximum burst and maximum number of RSVP messages to an output queue based on the link speed and input queue size of adjacent core switches.

    <VulnDiscussion>RSVP-TE can be used to perform constraint-based routing when building LSP tunnels within the network core that will support Q...
    Rule Low Severity
    Show

  • SRG-NET-000512-RTR-000004

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco MPLS switch must be configured to have TTL Propagation disabled.

    &lt;VulnDiscussion&gt;The head end of the label-switched path (LSP), the label edge switch (LER) will decrement the IP packet's time-to-live (TTL) ...
    Rule Medium Severity
    Show

  • SRG-NET-000512-RTR-000005

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco PE switch must be configured to have each Virtual Routing and Forwarding (VRF) instance bound to the appropriate physical or logical interfaces to maintain traffic separation between all MPLS L3VPNs.

    &lt;VulnDiscussion&gt;The primary security model for an MPLS L3VPN infrastructure is traffic separation. The service provider must guarantee the cu...
    Rule High Severity
    Show

  • SRG-NET-000512-RTR-000006

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco PE switch must be configured to have each Virtual Routing and Forwarding (VRF) instance with the appropriate Route Target (RT).

    &lt;VulnDiscussion&gt;The primary security model for an MPLS L3VPN as well as a VRF-lite infrastructure is traffic separation. Each interface can o...
    Rule High Severity
    Show

  • SRG-NET-000512-RTR-000007

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco PE switch must be configured to have each VRF with the appropriate Route Distinguisher (RD).

    &lt;VulnDiscussion&gt;An RD provides uniqueness to the customer address spaces within the MPLS L3VPN infrastructure. The concept of the VPN-IPv4 an...
    Rule Medium Severity
    Show

  • SRG-NET-000343-RTR-000001

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco PE switch 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.

    &lt;VulnDiscussion&gt;LDP provides the signaling required for setting up and tearing down pseudowires (virtual circuits used to transport Layer 2 f...
    Rule Medium Severity
    Show

  • SRG-NET-000512-RTR-000008

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco PE switch providing MPLS Virtual Private Wire Service (VPWS) must be configured to have the appropriate virtual circuit identification (VC ID) for each attachment circuit.

    &lt;VulnDiscussion&gt;VPWS is an L2VPN technology that provides a virtual circuit between two PE switches to forward Layer 2 frames between two cus...
    Rule High Severity
    Show

  • SRG-NET-000512-RTR-000009

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco PE switch 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.

    &lt;VulnDiscussion&gt;VPLS defines an architecture that delivers Ethernet multipoint services over an MPLS network. Customer Layer 2 frames are for...
    Rule High Severity
    Show

  • SRG-NET-000512-RTR-000010

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco PE switch must be configured to enforce the split-horizon rule for all pseudowires within a Virtual Private LAN Services (VPLS) bridge domain.

    &lt;VulnDiscussion&gt;A virtual forwarding instance (VFI) must be created on each participating PE switch for each customer VLAN using VPLS for car...
    Rule Low Severity
    Show

  • SRG-NET-000193-RTR-000002

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco PE switch providing Virtual Private LAN Services (VPLS) must be configured to have traffic storm control thresholds on CE-facing interfaces.

    &lt;VulnDiscussion&gt;A traffic storm occurs when packets flood a VPLS bridge, creating excessive traffic and degrading network performance. Traffi...
    Rule Medium Severity
    Show

  • SRG-NET-000362-RTR-000119

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco PE switch 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.

    &lt;VulnDiscussion&gt;IGMP snooping provides a way to constrain multicast traffic at Layer 2. By monitoring the IGMP membership reports sent by hos...
    Rule Low Severity
    Show

  • SRG-NET-000192-RTR-000002

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco PE switch must be configured to limit the number of MAC addresses it can learn for each Virtual Private LAN Services (VPLS) bridge domain.

    &lt;VulnDiscussion&gt;VPLS defines an architecture that delivers Ethernet multipoint services over an MPLS network. Customer Layer 2 frames are for...
    Rule Medium Severity
    Show

  • SRG-NET-000205-RTR-000007

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco PE switch must be configured to block any traffic that is destined to the IP core infrastructure.

    &lt;VulnDiscussion&gt;IP addresses can be guessed. Core network elements must not be accessible from any external host. Protecting the core from an...
    Rule High Severity
    Show

  • SRG-NET-000205-RTR-000008

    <GroupDescription></GroupDescription>
    Group
    Show

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