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Cisco NX OS Switch RTR Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-NET-000018-RTR-000001

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  • The Cisco switch must be configured to enforce approved authorizations for controlling the flow of information within the network based on organization-defined information flow control policies.

    Information flow control regulates where information is allowed to travel within a network and between interconnected networks. The flow of all network traffic must be monitored and controlled so i...
    Rule Medium Severity
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  • SRG-NET-000230-RTR-000001

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  • SRG-NET-000230-RTR-000003

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  • The Cisco switch must be configured to use keys with a duration not exceeding 180 days for authenticating routing protocol messages.

    If the keys used for routing protocol authentication are guessed, the malicious user could create havoc within the network by advertising incorrect routes and redirecting traffic. Some routing prot...
    Rule Medium Severity
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  • SRG-NET-000168-RTR-000077

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  • SRG-NET-000168-RTR-000078

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  • SRG-NET-000019-RTR-000007

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  • The Cisco switch must be configured to have all inactive layer 3 interfaces disabled.

    An inactive interface is rarely monitored or controlled and may expose a network to an undetected attack on that interface. Unauthorized personnel with access to the communication facility could ga...
    Rule Low Severity
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  • SRG-NET-000131-RTR-000083

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  • SRG-NET-000362-RTR-000110

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  • The Cisco switch must be configured to protect against or limit the effects of denial-of-service (DoS) attacks by employing control plane protection.

    The Route Processor (RP) is critical to all network operations because it is the component used to build all forwarding paths for the data plane via control plane processes. It is also instrumental...
    Rule Medium Severity
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  • SRG-NET-000205-RTR-000002

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  • The Cisco switch must be configured to drop all fragmented Internet Control Message Protocol (ICMP) packets destined to itself.

    Fragmented ICMP packets can be generated by hackers for DoS attacks such as Ping O' Death and Teardrop. It is imperative that all fragmented ICMP packets are dropped.
    Rule Medium Severity
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  • SRG-NET-000362-RTR-000111

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  • SRG-NET-000362-RTR-000112

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  • SRG-NET-000362-RTR-000113

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  • The Cisco switch must be configured to have Internet Control Message Protocol (ICMP) unreachable messages disabled on all external interfaces.

    The ICMP supports IP traffic by relaying information about paths, routes, and network conditions. Switches automatically send ICMP messages under a wide variety of conditions. Host unreachable ICMP...
    Rule Medium Severity
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  • SRG-NET-000362-RTR-000115

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  • The Cisco switch must be configured to have Internet Control Message Protocol (ICMP) redirect messages disabled on all external interfaces.

    The ICMP supports IP traffic by relaying information about paths, routes, and network conditions. Switches automatically send ICMP messages under a wide variety of conditions. Redirect ICMP message...
    Rule Medium Severity
    Show

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