Hi, ticket server is a Cognos tools allowing a user to connect on Cognos Upfront for a defined time. For example, if you decide to disconnect a user after a time connexion of 60minutes, you can make it with Ticket Server. when you go to watch a movie in a cinema, you have a ticket for about 1h30. Ticket server make the same think with the Upfront Users
You can configure It by using configuration manager.