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Cisco IOS XE Switch RTR Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • The Cisco switch must be configured to have Gratuitous ARP disabled on all external interfaces.

    <VulnDiscussion>A gratuitous ARP is an ARP broadcast in which the source and destination MAC addresses are the same. It is used to inform the...
    Rule Medium Severity
  • SRG-NET-000362-RTR-000112

    <GroupDescription></GroupDescription>
    Group
  • The Cisco switch must be configured to have IP directed broadcast disabled on all interfaces.

    &lt;VulnDiscussion&gt;An IP directed broadcast is a datagram sent to the broadcast address of a subnet that is not directly attached to the sending...
    Rule Low Severity
  • SRG-NET-000362-RTR-000113

    <GroupDescription></GroupDescription>
    Group
  • The Cisco switch must be configured to have Internet Control Message Protocol (ICMP) unreachable messages disabled on all external interfaces.

    &lt;VulnDiscussion&gt;The ICMP supports IP traffic by relaying information about paths, routes, and network conditions. Switches automatically send...
    Rule Medium Severity
  • SRG-NET-000362-RTR-000114

    <GroupDescription></GroupDescription>
    Group
  • The Cisco switch must be configured to have Internet Control Message Protocol (ICMP) mask reply messages disabled on all external interfaces.

    &lt;VulnDiscussion&gt;The ICMP supports IP traffic by relaying information about paths, routes, and network conditions. Switches automatically send...
    Rule Medium Severity
  • SRG-NET-000362-RTR-000115

    <GroupDescription></GroupDescription>
    Group
  • The Cisco switch must be configured to produce audit records containing information to establish where the events occurred.

    &lt;VulnDiscussion&gt;Without establishing where events occurred, it is impossible to establish, correlate, and investigate the events leading up t...
    Rule Medium Severity
  • SRG-NET-000077-RTR-000001

    <GroupDescription></GroupDescription>
    Group
  • The Cisco switch must be configured to produce audit records containing information to establish the source of the events.

    &lt;VulnDiscussion&gt;Without establishing the source of the event, it is impossible to establish, correlate, and investigate the events leading up...
    Rule Medium Severity
  • SRG-NET-000019-RTR-000001

    <GroupDescription></GroupDescription>
    Group
  • The Cisco switch must be configured to disable the auxiliary port unless it is connected to a secured modem providing encryption and authentication.

    &lt;VulnDiscussion&gt;The use of POTS lines to modems connecting to network devices provides clear text of authentication traffic over commercial c...
    Rule Low Severity
  • SRG-NET-000202-RTR-000001

    <GroupDescription></GroupDescription>
    Group
  • The Cisco perimeter switch 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
  • SRG-NET-000019-RTR-000002

    <GroupDescription></GroupDescription>
    Group
  • The Cisco perimeter switch must be configured to enforce approved authorizations for controlling the flow of information between interconnected networks in accordance with applicable policy.

    &lt;VulnDiscussion&gt;Information flow control regulates authorized information to travel within a network and between interconnected networks. Con...
    Rule Medium Severity
  • SRG-NET-000364-RTR-000109

    <GroupDescription></GroupDescription>
    Group
  • The Cisco BGP switch must be configured to reject inbound route advertisements for any Bogon prefixes.

    &lt;VulnDiscussion&gt;Accepting route advertisements for Bogon prefixes can result in the local autonomous system (AS) becoming a transit for malic...
    Rule Medium Severity
  • SRG-NET-000018-RTR-000003

    <GroupDescription></GroupDescription>
    Group

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