(An introduction to pix and asa. For many years, Cisco PIX has always been the firewall of Cisco's determination. But in May 2005, Cisco launched a new product - Adaptive Security Products (ASA, AdaptiveSecurityAppliance). However, the PIX is still available. I've heard a lot of people asking over and over what exactly is the difference between these two product lines. Let everyone take a look. What is CiscoPIX?)