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II - Mission Support Classified

Rules and Groups employed by this XCCDF Profile

  • SRG-NET-000362-L2S-000021

    <GroupDescription></GroupDescription>
    Group
  • The Cisco switch must have Root Guard enabled on all switch ports connecting to access layer switches and hosts.

    &lt;VulnDiscussion&gt;Spanning Tree Protocol (STP) does not provide any means for the network administrator to securely enforce the topology of the...
    Rule Low Severity
  • SRG-NET-000362-L2S-000022

    <GroupDescription></GroupDescription>
    Group
  • The Cisco switch must have BPDU Guard enabled on all user-facing or untrusted access switch ports.

    &lt;VulnDiscussion&gt;If a rogue switch is introduced into the topology and transmits a Bridge Protocol Data Unit (BPDU) with a lower bridge priori...
    Rule Medium Severity
  • SRG-NET-000362-L2S-000023

    <GroupDescription></GroupDescription>
    Group
  • The Cisco switch must have STP Loop Guard enabled.

    &lt;VulnDiscussion&gt;The Spanning Tree Protocol (STP) loop guard feature provides additional protection against STP loops. An STP loop is created ...
    Rule Medium Severity
  • SRG-NET-000362-L2S-000024

    <GroupDescription></GroupDescription>
    Group
  • The Cisco switch must have Unknown Unicast Flood Blocking (UUFB) enabled.

    &lt;VulnDiscussion&gt;Access layer switches use the Content Addressable Memory (CAM) table to direct traffic to specific ports based on the VLAN nu...
    Rule Medium Severity
  • SRG-NET-000362-L2S-000025

    <GroupDescription></GroupDescription>
    Group
  • The Cisco switch must have DHCP snooping for all user VLANs to validate DHCP messages from untrusted sources.

    &lt;VulnDiscussion&gt;In an enterprise network, devices under administrative control are trusted sources. These devices include the switches, route...
    Rule Medium Severity

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