A collection of resources I've found useful while working with the ElasticStack. Many thanks to those that have contributed these resources to the community.

Description URL
F5 Config https://github.com/MattDierick/F5-Networks
F5 LTM Guide https://johntuckner.me/2017/02/20/elk-integrating-f5-ltm-and-asm/
Yelp ElastAlert https://github.com/Yelp/elastalert
Yelp ElastAlert Documentation https://elastalert.readthedocs.io/en/latest/
Search Guard (Security) https://search-guard.com/
Geoip Filter Plugin https://www.elastic.co/guide/en/logstash/current/plugins-filters-geoip.html
Plain codec Plugin https://www.elastic.co/guide/en/logstash/current/plugins-codecs-plain.html#plugins-codecs-plain-options
Nmap Plugin https://www.elastic.co/blog/using-nmap-logstash-to-gain-insight-into-your-network
Nmap for network response time https://www.professormesser.com/nmap/hacking-nmap-using-nmap-to-calculate-network-response-time/5/
Elasticsearch Output Plugin https://www.elastic.co/guide/en/logstash/current/plugins-outputs-elasticsearch.html#_getting_help_56
Logstash Lession: Grok/Mutate https://www.elastic.co/blog/little-logstash-lessons-part-using-grok-mutate-type-data
Logstash Lesson: Mapping https://www.elastic.co/blog/logstash_lesson_elasticsearch_mapping
FirewallD on CentOS 7 https://www.digitalocean.com/community/tutorials/how-to-set-up-a-firewall-using-firewalld-on-centos-7
Working with Plugins https://www.elastic.co/guide/en/logstash/current/working-with-plugins.html
Geopoint Mapping Template https://www.elastic.co/blog/logstash_lesson_elasticsearch_mapping.