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I - Mission Critical Classified

Rules and Groups employed by this XCCDF Profile

  • SRG-NET-000205-RTR-000014

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco perimeter switch must be configured to restrict it from accepting outbound IP packets that contain an illegitimate address in the source address field via egress filter or by enabling Unicast Reverse Path Forwarding (uRPF).

    &lt;VulnDiscussion&gt;A compromised host in an enclave can be used by a malicious platform to launch cyberattacks on third parties. This is a commo...
    Rule High Severity
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  • SRG-NET-000205-RTR-000003

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco perimeter switch 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
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  • SRG-NET-000205-RTR-000004

    <GroupDescription></GroupDescription>
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  • The Cisco perimeter switch 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
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  • SRG-NET-000205-RTR-000005

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco perimeter switch 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-000205-RTR-000015

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco perimeter switch must be configured to block all packets with any IP options.

    &lt;VulnDiscussion&gt;Packets with IP options are not fast switched and henceforth must be punted to the switch processor. Hackers who initiate den...
    Rule Medium Severity
    Show

  • SRG-NET-000364-RTR-000111

    <GroupDescription></GroupDescription>
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  • The Cisco perimeter switch 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
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  • SRG-NET-000364-RTR-000111

    <GroupDescription></GroupDescription>
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  • The Cisco perimeter switch must be configured to have Cisco Discovery Protocol (CDP) disabled on all external interfaces.

    &lt;VulnDiscussion&gt;CDP is a Cisco proprietary neighbor discovery protocol used to advertise device capabilities, configuration information, and ...
    Rule Low Severity
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  • SRG-NET-000364-RTR-000112

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco perimeter switch must be configured to have Proxy ARP disabled on all external interfaces.

    &lt;VulnDiscussion&gt;When Proxy ARP is enabled on a switch, it allows that switch to extend the network (at Layer 2) across multiple interfaces (L...
    Rule Medium Severity
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  • SRG-NET-000364-RTR-000113

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco perimeter switch must be configured to block all outbound management traffic.

    &lt;VulnDiscussion&gt;For in-band management, the management network must have its own subnet in order to enforce control and access boundaries pro...
    Rule Medium Severity
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  • SRG-NET-000205-RTR-000012

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco switch must be configured to only permit management traffic that ingresses and egresses the out-of-band management (OOBM) interface.

    &lt;VulnDiscussion&gt;The OOBM access switch will connect to the management interface of the managed network elements. The management interface can...
    Rule Medium Severity
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