Cisco IOS Switch NDM STIG Version Comparison

There are 5 differences between versions v2 r9 (April 24, 2024) (the "left" version) and v3 r2 (Oct. 24, 2024) (the "right" version).

Check CISC-ND-000470 was changed between these two versions. Green, underlined text was added, red, struck-out text was removed.

The regular view of the left check and right check may be easier to read.

Title

The Cisco switch must be configured to prohibit the use of all unnecessary and non-secure functions and services.

Check Content

Verify that the switch does not have any unnecessary or nonsecure ports, protocols, and services enabled. For example, the following commands should not be in the configuration: boot network ip boot server ip bootp server ip dns server ip identd ip finger ip http server ip rcmd rcp-enable ip rcmd rsh-enable service config service finger service tcp-small-servers service udp-small-servers service pad service call-home Note: Certain legacy devices may require 'service call-home' be enabled to support Smart Licensing as they do not support the newer smart transport configuration. Those devices do not incur a finding for having call-home If call-home enabled for Smart Licensing. If any unnecessary or nonsecure ports, protocols, or services are enabled, this is a finding.

Discussion

Network devices are capable of providing a wide variety of functions and services. Some of the functions and services provided by default may not be necessary to support essential organizational operations. Additionally, it is sometimes convenient to provide multiple services from a single component (e.g., email and web services); however, doing so increases risk over limiting the services provided by any one component. To support the requirements and principles of least functionality, the network device must support the organizational requirements providing only essential capabilities and limiting the use of ports, protocols, and/or services to only those required, authorized, and approved. Some network devices have capabilities enabled by default; if these capabilities are not necessary, they must be disabled. If a particular capability is used, it must be documented and approved.

Fix

Disable the following services if enabled as shown in the example below: SW2(config)#no boot network SW2(config)#no ip boot server SW2(config)#no ip bootp server SW2(config)#no ip dns server SW2(config)#no ip identd SW2(config)#no ip finger SW2(config)#no ip http server SW2(config)#no ip rcmd rcp-enable SW2(config)#no ip rcmd rsh-enable SW2(config)#no service config SW2(config)#no service finger SW2(config)#no service tcp-small-servers SW2(config)#no service udp-small-servers SW2(config)#no service pad SW2(config)#no service call-home SW2(config)#end