Social Engineering : Campaign Components : Portable File : Listening Port Distribution

Listening Port Distribution
Metasploit Pro systematically assigns the LPORT so that a port conflict does not occur between the portable file components. When you create the portable file component, Metasploit Pro searches through ports 1,024-65,535 to identify ports that are available. It automatically assigns the first available port that it finds to the portable component and blocks off that port so that it does not reassign the same port.