CISC-L2-000240 - The Cisco switch must not use the default VLAN for management traffic.

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Switches use the default VLAN (i.e., VLAN 1) for in-band management and to communicate with directly connected switches using Spanning-Tree Protocol (STP), Dynamic Trunking Protocol (DTP), VLAN Trunking Protocol (VTP), and Port Aggregation Protocol (PAgP) - all untagged traffic. As a consequence, the default VLAN may unwisely span the entire network if not appropriately pruned. If its scope is large enough, the risk of compromise can increase significantly.

NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.


Configure the switch for management access to use a VLAN other than the default VLAN:

SW1(config)#int vlan 22
SW1(config-if)#ip add
SW1(config-if)#no shut

See Also

Item Details

References: CAT|II, CCI|CCI-000366, Rule-ID|SV-220644r539671_rule, STIG-ID|CISC-L2-000240, STIG-Legacy|SV-110259, STIG-Legacy|V-101155, Vuln-ID|V-220644

Plugin: Cisco

Control ID: 6ed7e16c641b71839abe849e104b38304c2221dbe1fada3401918bcf883d7568