Dell Wyse ThinOS Version 8.6 Administrator’s Guide

Security

A new global security policy has been defined for ThinOS and this policy is applied to all secure connections (https/SSL connections) with a few exceptions. 

Purpose—To improve the security level by default and add the global configuration. This security policy integrates security setting for each application.

SecurityPolicy={full | warning (default) | low} 
SecuredNetworkProtocol={yes | no (default)}
TLSMinVersion={1 (default), 2, 3} 
TLSMaxVesion={1, 2, 3 (default)}

All applications running on the default SSL security mode follow the global mode. In the global mode, the default value is Warning. The affected applications include VMware View, Amazon WorkSpaces (AWS), file server, WDM Service, Caradigm Server, and OneSign Server.

For more information about the security mode INI parameters, see Dell Wyse ThinOS INI Guide.

The following are the exceptions:

• File server and WDM in factory reset state—Before you load any INI parameter, the SSL security mode is set to Low, and after loading the INI parameter, the value is changed to follow the global mode value. For example, the default value is set to warning, if the value is not changed by the INI parameter.

  System with previous settings (default value is set to Low) follows the global mode after the unit is upgraded. For example, the default value is set to Warning, if the value is not changed by the INI parameter.

• VMware View and AWS brokers include own security settings (GUI and INI). From ThinOS 8.3 release, an additional option is added to follow the global mode as its new default value. The security mode GUI context is updated for better understanding.
• Wyse Management Suite, Microsoft RDS broker, Citrix broker, and SecureMatrix are always Full.