In this chapter, we covered the powerful filter section of Logstash, which can be used for parsing and enriching log events. We have also covered some commonly used filter plugins. Then, we covered the Beats framework and took an overview of various Beats, including Filebeat, Heartbeat, Packetbeat, and so on, covering Filebeat in detail.

In the next chapter, we will be covering the various features of X-Pack, a commercial offering by Elastic.co which contains features such as securing the Elastic Stack, as well as monitoring, alerting, graphs, and reporting.