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I - Mission Critical Public

Rules and Groups employed by this XCCDF Profile

  • SRG-NET-000205

    <GroupDescription></GroupDescription>
    Group
  • The PE router must be configured to ignore or block all packets with any IP options.

    &lt;VulnDiscussion&gt;Packets with IP options are not fast switched and therefore must be punted to the router processor. Hackers who initiate deni...
    Rule Medium Severity
  • SRG-NET-000230

    <GroupDescription></GroupDescription>
    Group
  • The router must be configured to implement message authentication for all control plane protocols.

    &lt;VulnDiscussion&gt;A rogue router could send a fictitious routing update to convince a site's perimeter router to send traffic to an incorrect o...
    Rule Medium Severity
  • SRG-NET-000230

    <GroupDescription></GroupDescription>
    Group
  • The BGP router must be configured to use a unique key for each autonomous system (AS) that it peers with.

    &lt;VulnDiscussion&gt;If the same keys are used between eBGP neighbors, the chance of a hacker compromising any of the BGP sessions increases. It i...
    Rule Medium Severity
  • SRG-NET-000230

    <GroupDescription></GroupDescription>
    Group
  • The router must be configured to use keys with a duration not exceeding 180 days for authenticating routing protocol messages.

    &lt;VulnDiscussion&gt;If the keys used for routing protocol authentication are guessed, the malicious user could create havoc within the network by...
    Rule Medium Severity
  • SRG-NET-000362

    <GroupDescription></GroupDescription>
    Group
  • The BGP router must be configured to enable the Generalized TTL Security Mechanism (GTSM).

    &lt;VulnDiscussion&gt;GTSM is designed to protect a router's IP-based control plane from DoS attacks. Many attacks focused on CPU load and line-car...
    Rule Low Severity
  • SRG-NET-000512

    <GroupDescription></GroupDescription>
    Group
  • The router must be configured to advertise a hop limit of at least 32 in Router Advertisement messages for IPv6 stateless auto-configuration deployments.

    &lt;VulnDiscussion&gt;The Neighbor Discovery protocol allows a hop limit value to be advertised by routers in a Router Advertisement message being ...
    Rule Low Severity
  • SRG-NET-000512

    <GroupDescription></GroupDescription>
    Group
  • The router must not be configured to use IPv6 Site Local Unicast addresses.

    &lt;VulnDiscussion&gt;As currently defined, site local addresses are ambiguous and can be present in multiple sites. The address itself does not co...
    Rule Medium Severity
  • SRG-NET-000512

    <GroupDescription></GroupDescription>
    Group
  • The perimeter router must be configured to suppress Router Advertisements on all external IPv6-enabled interfaces.

    &lt;VulnDiscussion&gt;Many of the known attacks in stateless autoconfiguration are defined in RFC 3756 were present in IPv4 ARP attacks. To mitigat...
    Rule Medium Severity
  • SRG-NET-000364

    <GroupDescription></GroupDescription>
    Group
  • The perimeter router must be configured to drop IPv6 undetermined transport packets.

    &lt;VulnDiscussion&gt;One of the fragmentation weaknesses known in IPv6 is the undetermined transport packet. This packet contains an undetermined ...
    Rule Medium Severity
  • SRG-NET-000364

    <GroupDescription></GroupDescription>
    Group
  • The perimeter router must be configured drop IPv6 packets with a Routing Header type 0, 1, or 3255.

    &lt;VulnDiscussion&gt;The routing header can be used maliciously to send a packet through a path where less robust security is in place, rather tha...
    Rule Medium Severity

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