The Cisco switch must have all disabled switch ports assigned to an unused VLAN.
An XCCDF Rule
Description
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 access to that VLAN as a member.
- ID
- SV-220667r991904_rule
- Version
- CISC-L2-000210
- Severity
- Medium
- References
- Updated
Remediation Templates
A Manual Procedure
Assign all switch ports not in use to an inactive VLAN.
Step 1: Assign the disabled interfaces to an inactive VLAN.
SW3(config)#int range g0/0 – 9
SW3(config-if-range)# switchport access vlan 999