ELK, the free alternative to Splunk

Installation of ELK is not too bad. There are a few guides online that walk through the processes but you will be hard pressed to find one to covers it all the way through. Some great links to help with this endeavor are:

https://www.digitalocean.com/community/tutorials/how-to-install-elasticsearch-logstash-and-kibana-4-on-ubuntu-14-04

https://www.ddreier.com/setting-up-elasticsearch-kibana-and-logstash/

https://gist.github.com/ashrithr/c5c03950ef631ac63c43

http://www.networkassassin.com/elk-stack-for-network-operations-reloaded/

https://www.elastic.co

For those who are inclined to install ELK in Windows, these sites are pretty useful.

https://community.ulyaoth.net/threads/how-to-install-logstash-on-a-windows-server-with-kibana-in-iis.17/

http://girl-germs.com/?p=438