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I - Mission Critical Public

Rules and Groups employed by this XCCDF Profile

  • SRG-NET-000362-RTR-000123

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  • The Arista multicast Designated Router (DR) must be configured to increase the shortest-path tree (SPT) threshold or set it to infinity to minimalize source-group (S, G) state within the multicast topology where Any Source Multicast (ASM) is deployed.

    ASM can have many sources for the same groups (many-to-many). For many receivers, the path via the RP may not be ideal compared with the shortest path from the source to the receiver. By default, t...
    Rule Medium Severity
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  • SRG-NET-000362-RTR-000124

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  • The Arista BGP router must be configured to enable the Generalized TTL Security Mechanism (GTSM).

    GTSM is designed to protect a router's IP-based control plane from DoS attacks. Many attacks focused on CPU load and line-card overload can be prevented by implementing GTSM on all Exterior Border ...
    Rule Low Severity
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  • SRG-NET-000364-RTR-000109

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

    Unrestricted traffic may contain malicious traffic that poses a threat to an enclave or to other connected networks. Additionally, unrestricted traffic may transit a network, which uses bandwidth a...
    Rule Medium Severity
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  • SRG-NET-000364-RTR-000110

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

    Bogons include IP packets on the public internet that contain addresses that are not in any range allocated or delegated by the Internet Assigned Numbers Authority (IANA) or a delegated regional in...
    Rule Medium Severity
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  • SRG-NET-000364-RTR-000111

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  • The Arista perimeter router must be configured to have Link Layer Discovery Protocols (LLDPs) disabled on all external interfaces.

    LLDPs are primarily used to obtain protocol addresses of neighboring devices and discover platform capabilities of those devices. Use of SNMP with the LLDP Management Information Base (MIB) allows ...
    Rule Low Severity
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