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Cisco IOS XR Router RTR Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • The Cisco perimeter router must be configured to not redistribute static routes to an alternate gateway service provider into BGP or an IGP peering with the NIPRNet or to other autonomous systems.

    <VulnDiscussion>If the static routes to the alternate gateway are being redistributed into an Exterior Gateway Protocol or Interior Gateway P...
    Rule Low Severity
    Show

  • SRG-NET-000205-RTR-000003

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco 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-000019-RTR-000002

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco perimeter router 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
    Show

  • SRG-NET-000364-RTR-000109

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco perimeter router must be configured to only allow incoming communications from authorized sources to be routed to authorized destinations.

    &lt;VulnDiscussion&gt;Unrestricted traffic may contain malicious traffic that poses a threat to an enclave or to other connected networks. Addition...
    Rule Medium Severity
    Show

  • SRG-NET-000364-RTR-000110

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco perimeter router must be configured to block inbound packets with source Bogon IP address prefixes.

    &lt;VulnDiscussion&gt;Packets with Bogon IP source addresses should never be allowed to traverse the IP core. Bogon IP networks are RFC1918 address...
    Rule Medium Severity
    Show

  • SRG-NET-000019-RTR-000008

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco perimeter router must be configured to protect an enclave connected to an alternate gateway by using an inbound filter that only permits packets with destination addresses within the sites address space.

    &lt;VulnDiscussion&gt;Enclaves with alternate gateway connections must take additional steps to ensure there is no compromise on the enclave networ...
    Rule High Severity
    Show

  • The Cisco perimeter router must be configured to have Proxy ARP disabled on all external interfaces.

    &lt;VulnDiscussion&gt;When Proxy ARP is enabled on a router, it allows that router to extend the network (at Layer 2) across multiple interfaces (L...
    Rule Medium Severity
    Show

  • SRG-NET-000364-RTR-000113

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco perimeter router must be configured to filter traffic destined to the enclave in accordance with the guidelines contained in DoD Instruction 8551.1.

    &lt;VulnDiscussion&gt;Vulnerability assessments must be reviewed by the System Administrator, and protocols must be approved by the Information Ass...
    Rule Medium Severity
    Show

  • SRG-NET-000205-RTR-000004

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco perimeter router must be configured to filter ingress traffic at the external interface on an inbound direction.

    &lt;VulnDiscussion&gt;Access lists are used to separate data traffic into that which it will route (permitted packets) and that which it will not r...
    Rule Medium Severity
    Show

  • SRG-NET-000205-RTR-000005

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco perimeter router must be configured to filter egress traffic at the internal interface on an inbound direction.

    &lt;VulnDiscussion&gt;Access lists are used to separate data traffic into that which it will route (permitted packets) and that which it will not r...
    Rule Medium Severity
    Show

  • SRG-NET-000364-RTR-000111

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco perimeter router must be configured to have Link Layer Discovery Protocol (LLDP) disabled on all external interfaces.

    &lt;VulnDiscussion&gt;LLDP is a neighbor discovery protocol used to advertise device capabilities, configuration information, and device identity. ...
    Rule Low Severity
    Show

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