The Cisco switch must not be configured to have any feature enabled that calls home to the vendor.

Call home services will routinely send data such as configuration and diagnostic information to the vendor for routine or emergency analysis and troubleshooting. There is a risk that transmission of sensitive data sent to unauthorized persons could result in data loss or downtime due to an attack.

Review the switch configuration to determine if the call home service is enabled as shown in the example below:

callhome contract-id CompanyXYZ customer-id CompanyXYZ email-contact netadmin@CompanyXYZ.com phone-contact +1-800-555-4567 enable

If the call home feature is configured to call home to the vendor, this is a finding.

Disable the call home feature as shown below:

SW1(config)# callhome SW1(config-callhome)# no enable SW1(config-callhome)# end