Detections
Analytics

1.6 CISC-ND-000140

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Information

The Cisco switch must be configured to enforce approved authorizations for controlling the flow of management information within the device based on control policies.

GROUP ID: V-220479
RULE ID: SV-220479r991956

A mechanism to detect and prevent unauthorized communication flow must be configured or provided as part of the system design. If management information flow is not enforced based on approved authorizations, the network device may become compromised. Information flow control regulates where management information is allowed to travel within a network device. The flow of all management information must be monitored and controlled so it does not introduce any unacceptable risk to the network device or data.

Application-specific examples of enforcement occur in systems that employ rule sets or establish configuration settings that restrict information system services or message-filtering capability based on message content (e.g., implementing key word searches or using document characteristics).

Applications providing information flow control must be able to enforce approved authorizations for controlling the flow of management information within the system in accordance with applicable policy.

Solution

Configure the Cisco switch to restrict management access to specific IP addresses as shown in the example below:

SW1(config)# ip access-list MGMT_NET
SW1(config-acl)# permit ip 10.1.48.0/24 any
SW1(config-acl)# deny ip any any log
SW1(config-acl)# exit
SW1(config)# line vty
SW1(config-line)# access-class MGMT_NET in
SW1(config-acl)# end

NX-OS v8 and later example:

SW1(config)# ip access-list MGMT_NET
SW1(config-acl)# permit ip 10.1.48.0/24 any
SW1(config-acl)# deny ip any any log
SW1(config-acl)# exit
SW1(config)# interface mgmt0
SW1(config-if)# ip access-group MGMT_NET in
SW1(config-acl)# end

See Also

https://workbench.cisecurity.org/benchmarks/23773

Item Details

Category: ACCESS CONTROL

References: 800-53|AC-4, CAT|II, CCI|CCI-001368, CCI|CCI-004192, Rule-ID|SV-220479r991956_rule, STIG-ID|CISC-ND-000140, Vuln-ID|V-220479

Plugin: Cisco

Control ID: fa182955994ad9312600ceba5cb94cfdaa908caa5a9e7481f0e6feee81389ad5