| V-220675 | | The Cisco switch must uniquely identify all network-connected endpoint devices before establishing any connection. | Controlling LAN access via 802.1x authentication can assist in preventing a malicious user from connecting an unauthorized PC to a switch port to inje... |
| V-220676 | | The Cisco switch must authenticate all VLAN Trunk Protocol (VTP) messages with a hash function using the most secured cryptographic algorithm available. | VLAN Trunk Protocol (VTP) provides central management of VLAN domains, thus reducing administration in a switched network. When configuring a new VLAN... |
| V-220677 | | The Cisco switch must be configured for authorized users to select a user session to capture. | Without the capability to select a user session to capture/record or view/hear, investigations into suspicious or harmful events would be hampered by ... |
| V-220678 | | The Cisco switch must be configured for authorized users to remotely view, in real time, all content related to an established user session from a component separate from The Cisco switch. | Without the capability to remotely view/hear all content related to a user session, investigations into suspicious user activity would be hampered. Re... |
| V-220679 | | The Cisco switch must authenticate all endpoint devices before establishing any connection. | Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity.
For distributed architect... |
| V-220681 | | The Cisco switch must have BPDU Guard enabled on all user-facing or untrusted access switch ports. | If a rogue switch is introduced into the topology and transmits a Bridge Protocol Data Unit (BPDU) with a lower bridge priority than the existing root... |
| V-220682 | | The Cisco switch must have STP Loop Guard enabled. | The Spanning Tree Protocol (STP) loop guard feature provides additional protection against STP loops. An STP loop is created when an STP blocking port... |
| V-220683 | | 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 ... |
| V-220684 | | 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 ne... |
| V-220685 | | 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 th... |
| V-220686 | | The Cisco switch must have Dynamic Address Resolution Protocol (ARP) Inspection (DAI) enabled on all user VLANs. | DAI intercepts Address Resolution Protocol (ARP) requests and verifies that each of these packets has a valid IP-to-MAC address binding before updatin... |
| V-220689 | | The Cisco switch must enable Unidirectional Link Detection (UDLD) to protect against one-way connections. | In topologies where fiber optic interconnections are used, physical misconnections can occur that allow a link to appear to be up when there is a mism... |
| V-220690 | | The Cisco switch must have all disabled switch ports assigned to an unused VLAN. | It is possible that a disabled port that is assigned to a user or management VLAN becomes enabled by accident or by an attacker and as a result gains ... |
| V-220691 | | The Cisco switch must not have the default VLAN assigned to any host-facing switch ports. | In a VLAN-based network, switches use the default VLAN (i.e., VLAN 1) for in-band management and to communicate with other networking devices using Sp... |
| V-220692 | | The Cisco switch must have the default VLAN pruned from all trunk ports that do not require it. | The default VLAN (i.e., VLAN 1) is a special VLAN used for control plane traffic such as Spanning-Tree Protocol (STP), Dynamic Trunking Protocol (DTP)... |
| V-220693 | | The Cisco switch must not use the default VLAN for management traffic. | Switches use the default VLAN (i.e., VLAN 1) for in-band management and to communicate with directly connected switches using Spanning-Tree Protocol (... |
| V-220694 | | The Cisco switch must have all user-facing or untrusted ports configured as access switch ports. | Double encapsulation can be initiated by an attacker who has access to a switch port belonging to the native VLAN of the trunk port. Knowing the victi... |
| V-220695 | | The Cisco switch must have the native VLAN assigned to an ID other than the default VLAN for all 802.1q trunk links. | VLAN hopping can be initiated by an attacker who has access to a switch port belonging to the same VLAN as the native VLAN of the trunk link connectin... |
| V-220680 | | The Cisco switch must have Root Guard enabled on all switch ports connecting to access layer switches and hosts. | Spanning Tree Protocol (STP) does not provide any means for the network administrator to securely enforce the topology of the switched network. Any sw... |
| V-220687 | | The Cisco switch must have Storm Control configured on all host-facing switchports. | A traffic storm occurs when packets flood a LAN, creating excessive traffic and degrading network performance. Traffic storm control prevents network ... |
| V-220688 | | The Cisco switch must have IGMP or MLD Snooping configured on all VLANs. | IGMP and MLD snooping provides a way to constrain multicast traffic at Layer 2. By monitoring the IGMP or MLD membership reports sent by hosts within ... |
| V-220696 | | The Cisco switch must not have any switchports assigned to the native VLAN. | Double encapsulation can be initiated by an attacker who has access to a switch port belonging to the native VLAN of the trunk port. Knowing the victi... |
