SSH connections made through Delinea proxy (remote access) disconnect after approximately one hour without warning. To prevent this from happening, you need to make changes to the putty configuration
C:\Program Files\Thycotic Software Ltd\Secret Server Protocol Handler.
Open Putty, go to SSH > Kex settings, and set the rekey time to unlimited. Then, use the product as usual. This should help prevent disconnections.
Go back to "Sessions", select a "saved session" and click "Save".