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).
Justin
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Did you recently upgrade your Cisco ASA and run into flow-export active refresh-interval problems? If you were starting to appreciate the numerous NetFlow Security Event Logging (NSEL) enhancements available in the Cisco ASA 8.4(5) NetFlow export you may be left disappointed after upgrading the ASA to version 8.5(1), 8.6(1), 8.7(1), 9.0(1), or 9.1(1). What happened?
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In this blog I’ll show you how to use Cisco ASA NSEL (aka Cisco ASA NetFlow) reporting to monitor your Cisco ASA firewall ACLs. With the addition of our Cisco Advanced Reporting module you can run many useful NetFlow reports — Network Performance Monitoring (Medianet), Performance Routing, Network Based Application Recognition (NBAR) — but today we’re going to focus on Cisco ASA NSEL Access Control List (ACL) reports.
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