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III - Administrative Sensitive

Rules and Groups employed by this XCCDF Profile

  • SRG-NET-000362-L2S-000023

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  • The Cisco switch must have Spanning Tree Protocol (STP) Loop Guard enabled.

    The STP loop guard feature provides additional protection against STP loops. An STP loop is created when an STP blocking port in a redundant topology erroneously transitions to the forwarding state...
    Rule Medium Severity
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  • SRG-NET-000362-L2S-000024

    Group
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  • The Cisco switch must have Unknown Unicast Flood Blocking (UUFB) enabled.

    Access layer switches use the Content Addressable Memory (CAM) table to direct traffic to specific ports based on the VLAN number and the destination MAC address of the frame. When a router has an ...
    Rule Medium Severity
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  • SRG-NET-000362-L2S-000025

    Group
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  • The Cisco switch must have DHCP snooping for all user VLANs to validate DHCP messages from untrusted sources.

    In an enterprise network, devices under administrative control are trusted sources. These devices include the switches, routers, and servers in the network. Host ports and unknown DHCP servers are ...
    Rule Medium Severity
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  • SRG-NET-000362-L2S-000026

    Group
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  • The Cisco switch must have IP Source Guard enabled on all user-facing or untrusted access switch ports.

    IP Source Guard provides source IP address filtering on a Layer 2 port to prevent a malicious host from impersonating a legitimate host by assuming the legitimate host's IP address. The feature use...
    Rule Medium Severity
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  • SRG-NET-000362-L2S-000027

    Group
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  • The Cisco switch must have Dynamic Address Resolution Protocol (ARP) Inspection (DAI) enabled on all user VLANs.

    DAI intercepts ARP requests and verifies that each of these packets has a valid IP-to-MAC address binding before updating the local ARP cache and before forwarding the packet to the appropriate des...
    Rule Medium Severity
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