If you were waiting to upgrade from ASA 8.4(5), because you would lose bidirectional flow exports, then wait no more. Cisco ASA NetFlow Bidirectional support has been added in version 9.1(2).
Author: Justin
Justin Jett is Director of Audit and Compliance at Plixer with roles ranging from system administration of web services to technical product marketing for Plixer’s incident response system, Scrutinizer. Jett, a graduate of the University of Maine at Farmington, is an avid learner of all things security, with a particular interest in TLS and DNS attacks.