After a day of research I've come to understand (maybe) the range of methods for controlling web access via a PIX/ASA: Regular expressions , access lists , Websense , and Series Content Security and Control Security Services Modules
Cisco makes the use of CSC-SSM's clear as mud. Do I understand that Trend Mico's Interscan is the software running on the SSM ?
Can Interscan run on a 5505 ? Can I put a SSM into a 5505 ?
Is there any site on the web that covers these and/or other methods of controlling web access ?