A service or feature that calls home to the vendor must be disabled.

From Perimeter Router Security Technical Implementation Guide

SV-36774r5_rule A service or feature that calls home to the vendor must be disabled.

Vulnerability discussion

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

Check content

Review the device configuration to determine if the call home service or feature is disabled on the device. If the call home service is enabled on the device, this is a finding. Note: This feature can be enabled if the communication is only to a server residing in the local area network or enclave.

Fix text

Configure the network device to disable the call home service or feature. Note: This feature can be enabled if the communication is only to a server residing in the local area network or enclave.

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.