Cisco IOS NetFlow is the primary denial of service (DoS) identification, accounting, and analysis technology for IP networks at Cisco and in the networking industry. Cisco IOS NetFlow provides valuable information about network users, applications usage, timing, and traffic direction on the network. Cisco is a leader in IP traffic flow technology and invented Cisco IOS NetFlow.
Cisco IOS IPsec provides security for transmission of sensitive information over unprotected networks (ie: Internet). IPsec acts as the network layer by protecting and authenticating IP packets between participating IPsec devices ("peers"), such as Cisco routers.
This document will discuss how Cisco IOS NetFlow can be leveraged to provide accounting information in an IPsec tunneling network topology.
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