Check: CISC-RT-000060
Cisco IOS XE Switch RTR STIG:
CISC-RT-000060
(in versions v2 r5 through v1 r0.1)
Title
The Cisco switch must be configured to have all inactive layer 3 interfaces disabled. (Cat III impact)
Discussion
An inactive interface is rarely monitored or controlled and may expose a network to an undetected attack on that interface. Unauthorized personnel with access to the communication facility could gain access to a switch by connecting to a configured interface that is not in use. If an interface is no longer used, the configuration must be deleted and the interface disabled. For sub-interfaces, delete sub-interfaces that are on inactive interfaces and delete sub-interfaces that are themselves inactive. If the sub-interface is no longer necessary for authorized communications, it must be deleted.
Check Content
Review the switch configuration and verify that inactive interfaces have been disabled as shown below: interface GigabitEthernet3 no switchport shutdown ! interface GigabitEthernet4 no switchport shutdown If an interface is not being used but is configured or enabled, this is a finding.
Fix Text
Disable all inactive interfaces as shown below: SW1(config)#interface GigabitEthernet3 SW1(config-if)#shutdown SW1(config)#interface GigabitEthernet4 SW1(config-if)#shutdown
Additional Identifiers
Rule ID: SV-220991r622190_rule
Vulnerability ID: V-220991
Group Title: SRG-NET-000019-RTR-000007
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-001414 |
The information system enforces approved authorizations for controlling the flow of information between interconnected systems based on organization-defined information flow control policies. |
Controls
Number | Title |
---|---|
AC-4 |
Information Flow Enforcement |