Software Engineering Institute

Network flow increasingly plays a vital role in the future of network security and analysis. Capturing and analyzing packet capture data on a large network is often prohibitively expensive. Cisco developed NetFlow 20 years ago to reduce the amount of information collected by aggregating packets with the same IP addresses, transport ports, and protocol into a compact record. In this blog post, Sarneso explains why NetFlow is still important in an age in which the common wisdom is that more data is always better. The bulletin includes a link to the blog post.