Method for securing streaming multimedia network transmissions

摘要

A method of securing against an unauthorized transmission within an authorized multimedia transmission from a sending data processor to a receiving data processor. The method includes altering the network transmission to interfere with the unauthorized transmission and render the unauthorized transmission invalid to the receiving data processor while not noticeably interfering with the streaming multimedia transmission. Monitoring for retransmissions or retransmission requests also serves as an indicator to an administrator that an unauthorized transmission is occurring. The method of this invention can be implemented by network administrator middleboxes such as firewalls.