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Router Security Requirements Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • The 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
    Show

  • SRG-NET-000193

    <GroupDescription></GroupDescription>
    Group
    Show

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

    &lt;VulnDiscussion&gt;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-000193

    <GroupDescription></GroupDescription>
    Group
    Show

  • The PE router 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-000193

    <GroupDescription></GroupDescription>
    Group
    Show

  • The PE router must be configured to enforce a Quality-of-Service (QoS) policy to limit the effects of packet flooding denial-of-service (DoS) attacks.

    &lt;VulnDiscussion&gt;DoS is a condition when a resource is not available for legitimate users. Packet flooding distributed denial-of-service (DDoS...
    Rule Medium Severity
    Show

  • SRG-NET-000193

    <GroupDescription></GroupDescription>
    Group
    Show

  • The PE router must be configured to enforce a Quality-of-Service (QoS) policy in accordance with the QoS DoDIN Technical Profile.

    &lt;VulnDiscussion&gt;Different applications have unique requirements and toleration levels for delay, jitter, bandwidth, packet loss, and availabi...
    Rule Low Severity
    Show

  • SRG-NET-000193

    <GroupDescription></GroupDescription>
    Group
    Show

  • The P router must be configured to enforce a Quality-of-Service (QoS) policy in accordance with the QoS GIG Technical Profile.

    &lt;VulnDiscussion&gt;Different applications have unique requirements and toleration levels for delay, jitter, bandwidth, packet loss, and availabi...
    Rule Low Severity
    Show

  • SRG-NET-000202

    <GroupDescription></GroupDescription>
    Group
    Show

  • The perimeter router must be configured to deny network traffic by default and allow network traffic by exception.

    &lt;VulnDiscussion&gt;A deny-all, permit-by-exception network communications traffic policy ensures that only connections that are essential and ap...
    Rule High Severity
    Show

  • SRG-NET-000205

    <GroupDescription></GroupDescription>
    Group
    Show

  • The router must be configured to restrict traffic destined to itself.

    &lt;VulnDiscussion&gt;The route processor handles traffic destined to the router—the key component used to build forwarding paths and is also instr...
    Rule High Severity
    Show

  • SRG-NET-000205

    <GroupDescription></GroupDescription>
    Group
    Show

  • The router must be configured to drop all fragmented Internet Control Message Protocol (ICMP) packets destined to itself.

    &lt;VulnDiscussion&gt;Fragmented ICMP packets can be generated by hackers for DoS attacks such as Ping O' Death and Teardrop. It is imperative that...
    Rule Medium Severity
    Show

  • SRG-NET-000205

    <GroupDescription></GroupDescription>
    Group
    Show

  • The PE router must be configured with Unicast Reverse Path Forwarding (uRPF) loose mode enabled on all CE-facing interfaces..

    &lt;VulnDiscussion&gt;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
    Show

  • SRG-NET-000205

    <GroupDescription></GroupDescription>
    Group
    Show

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