I would like to know if it is possible to setup access lists on a 6509 to filter based on Layer 7 Application information. Particuarly I would like to filter out some audio streaming applications and other potentially malicious or bandwidth intensive applications that go over port 80. Is it possible to setup access lists like this on the application layer? We currently have a Supervisor 1A with PFC and MSFC. Will this work for this functionality or would we need a NAM (network analysis module) or a newer supervisor engine to do this? What do you think?