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II - Mission Support Public

Rules and Groups employed by this XCCDF Profile

  • SRG-NET-000018-RTR-000002

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

    Accepting route advertisements for Bogon prefixes can result in the local autonomous system (AS) becoming a transit for malicious traffic as it will in turn advertise these prefixes to neighbor aut...
    Rule Medium Severity
    Show

  • SRG-NET-000018-RTR-000003

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  • The Cisco BGP switch must be configured to reject inbound route advertisements for any prefixes belonging to the local autonomous system (AS).

    Accepting route advertisements belonging to the local AS can result in traffic looping or being black-holed, or at a minimum, using a non-optimized path.
    Rule Medium Severity
    Show

  • SRG-NET-000018-RTR-000004

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  • The Cisco BGP switch must be configured to reject inbound route advertisements from a customer edge (CE) switch for prefixes that are not allocated to that customer.

    As a best practice, a service provider should only accept customer prefixes that have been assigned to that customer and any peering autonomous systems. A multi-homed customer with BGP speaking swi...
    Rule Medium Severity
    Show

  • SRG-NET-000018-RTR-000005

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  • The Cisco BGP switch must be configured to reject outbound route advertisements for any prefixes that do not belong to any customers or the local autonomous system (AS).

    Advertisement of routes by an autonomous system for networks that do not belong to any of its customers pulls traffic away from the authorized network. This causes a denial of service (DoS) on the ...
    Rule Medium Severity
    Show

  • SRG-NET-000205-RTR-000006

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  • The Cisco BGP switch must be configured to reject outbound route advertisements for any prefixes belonging to the IP core.

    Outbound route advertisements belonging to the core can result in traffic either looping or being black holed, or at a minimum, using a non-optimized path.
    Rule Medium Severity
    Show

  • SRG-NET-000018-RTR-000006

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  • The Cisco BGP switch must be configured to reject route advertisements from BGP peers that do not list their autonomous system (AS) number as the first AS in the AS_PATH attribute.

    Verifying the path a route has traversed will ensure the IP core is not used as a transit network for unauthorized or possibly even internet traffic. All autonomous system boundary switches (ASBRs)...
    Rule Low Severity
    Show

  • SRG-NET-000018-RTR-000010

    Group
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  • The Cisco BGP switch must be configured to reject route advertisements from CE switches with an originating AS in the AS_PATH attribute that does not belong to that customer.

    Verifying the path a route has traversed will ensure that the local AS is not used as a transit network for unauthorized traffic. To ensure that the local AS does not carry any prefixes that do not...
    Rule Low Severity
    Show

  • SRG-NET-000362-RTR-000117

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  • The Cisco BGP switch must be configured to use the maximum prefixes feature to protect against route table flooding and prefix de-aggregation attacks.

    The effects of prefix de-aggregation can degrade switch performance due to the size of routing tables and also result in black-holing legitimate traffic. Initiated by an attacker or a misconfigured...
    Rule Medium Severity
    Show

  • SRG-NET-000362-RTR-000118

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  • The Cisco BGP switch must be configured to limit the prefix size on any inbound route advertisement to /24, or the least significant prefixes issued to the customer.

    The effects of prefix de-aggregation can degrade switch performance due to the size of routing tables and also result in black-holing legitimate traffic. Initiated by an attacker or a misconfigured...
    Rule Low Severity
    Show

  • SRG-NET-000512-RTR-000001

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  • The Cisco BGP switch must be configured to use its loopback address as the source address for iBGP peering sessions.

    Using a loopback address as the source address offers a multitude of uses for security, access, management, and scalability of the BGP switches. It is easier to construct appropriate ingress filter...
    Rule Low Severity
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The content of the drawer really is up to you. It could have form fields, definition lists, text lists, labels, charts, progress bars, etc. Spacing recommendation is 24px margins. You can put tabs in here, and can also make the drawer scrollable.

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