NetFlow Analysis with Elastic Stack summarizes using NetFlow data with the Elastic Stack, including Logstash, Elasticsearch, and Kibana. It discusses what NetFlow is, the typical NetFlow architecture with flow exporters, collectors, and analysis applications. It then covers how to use Logstash for NetFlow collection, Elasticsearch for storage and analysis, and Kibana for visualization. The presentation provides examples of Logstash configuration for NetFlow input, filtering, and output, as well as templates for indexing NetFlow data in Elasticsearch.