This parameter ensures only DoD-approved ciphers and algorithms are enabled for use by the web browser. TLS is a protocol for protecting communication between the browser and the target server. When the browser attempts to set up a protected communication with the target server, the browser and server negotiate which protocol and version to use. The browser and server attempt to match each other's list of supported protocols and versions and pick the most preferred match.


Open Internet Explorer. From the menu bar, select 'Tools'. From the 'Tools' drop-down menu, select 'Internet Options'.
From the 'Internet Options' window, select the 'Advanced' tab, from the 'Advanced' tab window scroll down to the
'Security' category. Place a checkmark in the 'Use TLS 1.0' or higher check boxes. Uncheck 'Use SSL 2.0' and 'Use SSL
3.0' options.
Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet
Explorer-> Internet Control Panel-> Advanced Page-> 'Turn off Encryption Support' to 'Enabled', and select 'Use TLS
1.0' or higher from the drop-down box. Ensure the options do not include 'SSL 2.0' or 'SSL 3.0'.

Supportive Information

The following resource is also helpful.

This security hardening control applies to the following category of controls within NIST 800-53: System and Communications Protection.This control applies to the following type of system Windows.