Internet Direct (Indy) Version 9.0.1 Beta
TIdTCPServer.DefaultPort
Identifies the default port number for new connections.

property DefaultPort: integer;
Description
DefaultPort is an Integer property that identifies the port number used to listen for new client connections. The value of DefaultPort is read from and written to Bindings.DefaultPort.

TIdTCPServer uses the DefaultPort number to bind allocated sockets handles when the Active property to set to True.