The Cisco PIX Firewall series of products are stateful firewalls that deliver high security and fast performance to corporate networks. These firewalls allow users to thoroughly protect their internal networks from the outside world - providing full firewall security policy and protection.The Cisco PIX Firewall 10/100 Mbps Ethernet interface will provide you with the strongest security based on the adaptive security algorithm (ASA), which offers stateful connection-oriented security. At the same time maintaning lowest cost of ownership from simple installation, configuration, and scalability.