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II - Mission Support Public

Rules and Groups employed by this XCCDF Profile

  • SRG-NET-000018-RTR-000002

    <GroupDescription></GroupDescription>
    Group
  • The Arista BGP router 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
  • The Arista BGP router must be configured to reject inbound route advertisements for any prefixes belonging to the local autonomous system (AS).

    &lt;VulnDiscussion&gt;Accepting route advertisements belonging to the local AS can result in traffic looping or being black holed, or at a minimum ...
    Rule Medium Severity
  • SRG-NET-000018-RTR-000004

    <GroupDescription></GroupDescription>
    Group
  • The Arista BGP router must be configured to reject inbound route advertisements from a customer edge (CE) router for prefixes that are not allocated to that customer.

    &lt;VulnDiscussion&gt;As a best practice, a service provider should only accept customer prefixes that have been assigned to that customer and any ...
    Rule Medium Severity
  • SRG-NET-000018-RTR-000005

    <GroupDescription></GroupDescription>
    Group
  • The Arista BGP router must be configured to reject outbound route advertisements for any prefixes that do not belong to any customers or the local autonomous system (AS).

    &lt;VulnDiscussion&gt;Advertisement of routes by an autonomous system for networks that do not belong to any of its customers pulls traffic away fr...
    Rule Medium Severity
  • SRG-NET-000018-RTR-000006

    <GroupDescription></GroupDescription>
    Group
  • The Arista BGP router 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.

    &lt;VulnDiscussion&gt;Verifying the path a route has traversed will ensure the IP core is not used as a transit network for unauthorized or possibl...
    Rule Low Severity
  • SRG-NET-000018-RTR-000007

    <GroupDescription></GroupDescription>
    Group
  • The Arista Multicast Source Discovery Protocol (MSDP) router must be configured to filter received source-active multicast advertisements for any undesirable multicast groups and sources.

    &lt;VulnDiscussion&gt;The interoperability of BGP extensions for interdomain multicast routing and MSDP enables seamless connectivity of multicast ...
    Rule Low Severity
  • SRG-NET-000018-RTR-000008

    <GroupDescription></GroupDescription>
    Group
  • The Arista Multicast Source Discovery Protocol (MSDP) router must be configured to filter source-active multicast advertisements to external MSDP peers to avoid global visibility of local-only multicast sources and groups.

    &lt;VulnDiscussion&gt;To avoid global visibility of local information, there are a number of source-group (S, G) states in a PIM-SM domain that mus...
    Rule Low Severity
  • SRG-NET-000018-RTR-000009

    <GroupDescription></GroupDescription>
    Group
  • The Arista MSDP router must be configured to limit the amount of source-active messages it accepts on per-peer basis.

    &lt;VulnDiscussion&gt;To reduce any risk of a denial-of-service (DoS) attack from a rogue or misconfigured MSDP router, the router must be configur...
    Rule Low Severity
  • SRG-NET-000018-RTR-000010

    <GroupDescription></GroupDescription>
    Group
  • The Arista BGP router must be configured to reject route advertisements from CE routers with an originating AS in the AS_PATH attribute that does not belong to that customer.

    &lt;VulnDiscussion&gt;Verifying the path a route has traversed will ensure that the local AS is not used as a transit network for unauthorized traf...
    Rule Low Severity
  • SRG-NET-000019-RTR-000002

    <GroupDescription></GroupDescription>
    Group
  • The Arista 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

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