66664: DeviceLock DLP: A connection with a secured web site can not be established from a NetworkLock controlled computer

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Applies to: 

Last update: Wed, 2020-11-18 07:47


An attempt to connect to a secured web site fails, returning the 'Server timeout' error.


DeviceLock uses its own certificate to encrypt the SSL traffic, while some web sites/applications can only work with a predefined certificate.


To resolve HTTPS site connection problems, it is recommended to add the IP address or the site name into Protocols SSL White List.

In case of application-connection problems you need first to determine which Server the application is connecting to using TCP View tool:

Some applications use various servers from the reserved IP range, making it difficult to setup the SSL White List.
In this case we recommend contacting  the application's support team to receive the complete list of IP addresses (ranges) in use.

*You can search the NetworkLock issues section of this Knowledge Base for the information on resolving of similar issues.