Windows OS: Must not have the Telnet Client Installed

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Unnecessary services increase the attack surface of a system. Some of these services may not support the required levels of authentication or encryption or may provide unauthorized access to the system.

Remediation

To fix this: Uninstall the "Telnet Client" feature.
- Start "Server Manager".
- Select the server with the feature.
- Scroll down to "ROLES AND FEATURES" in the right pane.
- Select "Remove Roles and Features" from the drop-down "TASKS" list.
- Select the appropriate server on the "Server Selection" page and click "Next".
- Deselect "Telnet Client" on the "Features" page.
- Click "Next" and "Remove" as prompted.

Stig Server: https://www.stigviewer.com/stig/windows_server_2019/2020-06-15/finding/V-93423
Desktop: https://www.stigviewer.com/stig/windows_10/2021-08-18/finding/V-220721



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