Cisco ASA 5500 Series IPS Edition provides best-in-class firewall, application security, and intrusion prevention capabilities in a single, easy-to-deploy platform. Combining the strength and stability of the world's most-deployed firewall technology with the advanced inspection capabilities of the most popular IPS technology, the Cisco ASA 5500 Series IPS Edition protects an organization's servers and infrastructure from attack.
following URL states about that:
http://www.cisco.com/en/US/products/ps6120/prod_brochure0900aecd80402ef4.html
http://www.cisco.com/en/US/products/ps6120/products_qanda_item0900aecd805a1273.shtml