There’s an emerging tool that is available on practically every network that can help analyze and profile that network. NetFlow is used by all the major ISPs and carriers to resolve peering issues and account for whose traffic flows over which network. With it, it may become a cornerstone in protecting the enterprise by securing the network fabric. Using NetFlow correctly is the single most important step remaining for enterprises to secure their networks, says Richard Stiennononon of IT-Harvest Inc.”]
Source: https://www.darkreading.com/analytics/getting-to-know-netflow