III - Administrative Classified
Rules and Groups employed by this XCCDF Profile
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SRG-NET-000148-L2S-000015
<GroupDescription></GroupDescription>Group -
The Cisco switch must uniquely identify and authenticate all network-connected endpoint devices before establishing any connection.
<VulnDiscussion>Controlling LAN access via 802.1x authentication can assist in preventing a malicious user from connecting an unauthorized PC...Rule High Severity -
SRG-NET-000168-L2S-000019
<GroupDescription></GroupDescription>Group -
The Cisco switch must authenticate all VLAN Trunk Protocol (VTP) messages with a hash function using the most secured cryptographic algorithm available.
<VulnDiscussion>VTP provides central management of VLAN domains, thus reducing administration in a switched network. When configuring a new V...Rule Medium Severity -
SRG-NET-000193-L2S-000020
<GroupDescription></GroupDescription>Group -
The Cisco switch must manage excess bandwidth to limit the effects of packet-flooding types of denial-of-service (DoS) attacks.
<VulnDiscussion>Denial of service is a condition when a resource is not available for legitimate users. Packet-flooding DDoS attacks are refe...Rule Medium Severity -
SRG-NET-000362-L2S-000021
<GroupDescription></GroupDescription>Group -
The Cisco switch must have Root Guard enabled on all switch ports connecting to access layer switches.
<VulnDiscussion>Spanning Tree Protocol (STP) does not provide any means for the network administrator to securely enforce the topology of the...Rule Low Severity -
SRG-NET-000362-L2S-000022
<GroupDescription></GroupDescription>Group -
The Cisco switch must have Bridge Protocol Data Unit (BPDU) Guard enabled on all user-facing or untrusted access switch ports.
<VulnDiscussion>If a rogue switch is introduced into the topology and transmits a BPDU with a lower bridge priority than the existing root br...Rule Medium Severity -
SRG-NET-000362-L2S-000023
<GroupDescription></GroupDescription>Group -
The Cisco switch must have Spanning Tree Protocol (STP) Loop Guard enabled.
<VulnDiscussion>The STP loop guard feature provides additional protection against STP loops. An STP loop is created when an STP blocking port...Rule Medium Severity -
SRG-NET-000362-L2S-000024
<GroupDescription></GroupDescription>Group -
The Cisco switch must have Unknown Unicast Flood Blocking (UUFB) enabled.
<VulnDiscussion>Access layer switches use the Content Addressable Memory (CAM) table to direct traffic to specific ports based on the VLAN nu...Rule Medium Severity -
SRG-NET-000362-L2S-000025
<GroupDescription></GroupDescription>Group -
The Cisco switch must have DHCP snooping for all user VLANs to validate DHCP messages from untrusted sources.
<VulnDiscussion>In an enterprise network, devices under administrative control are trusted sources. These devices include the switches, route...Rule Medium Severity -
SRG-NET-000362-L2S-000026
<GroupDescription></GroupDescription>Group -
The Cisco switch must have IP Source Guard enabled on all user-facing or untrusted access switch ports.
<VulnDiscussion>IP Source Guard provides source IP address filtering on a Layer 2 port to prevent a malicious host from impersonating a legit...Rule Medium Severity -
SRG-NET-000362-L2S-000027
<GroupDescription></GroupDescription>Group -
The Cisco switch must have Dynamic Address Resolution Protocol (ARP) Inspection (DAI) enabled on all user VLANs.
<VulnDiscussion>DAI intercepts ARP requests and verifies that each of these packets has a valid IP-to-MAC address binding before updating the...Rule Medium Severity
Node 2
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