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


Finding ID Version Rule ID IA Controls Severity
V-220534 CISC-ND-000470 SV-220534r508548_rule High
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, then it must be documented and approved.
Cisco IOS XE Switch NDM Security Technical Implementation Guide 2021-09-16


Check Text ( C-22249r508546_chk )
Verify that the switch does not have any unnecessary or non-secure 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

If any unnecessary or non-secure ports, protocols, or services are enabled, this is a finding.
Fix Text (F-22238r508547_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