If you need secure data transfer between the MassTransit Server and MassTransit web clients, you have to configure MassTransit to work with TLS v1.2 protocol. To do so:
Open the MassTransit Administrator, and double-click the desired Web Client.
Note: You can enable TLS transfer for individual web clients only. Therefore, you must repeat these steps for every web client contact that you want to use TLS transfers.
In the Contact information window, select the Security tab.
In the Web Privileges section, select Allow Connect Via Web To Transfer Files check box.
Select TCP/IP Secure as Connection Method.
Select your desired Encryption Level, and then click OK to save your preferences.