Linux Open Source World

https://www.digitalocean.com/community/tutorials/how-to-set-up-a-production-elasticsearch-cluster-on-ubuntu-14-04

How To Set Up a Production Elasticsearch Cluster on Ubuntu 14.04 | DigitalOcean Elasticsearch is a popular open source search server that is used for real-time distributed search and analysis of data. When used for anything other than development, Elasticsearch should be deployed across multiple servers as a cluster, for the best

http://opensourceforu.com/2016/08/swatch/

Monitor Logs in Real-time with Swatch Though limited in its abilities, Swatch is a very powerful tool to implement alongside other security products to proactively monitor system logs. Swatch gives systems administrators great log-monitoring options. It’s a perfect tool for monitoring SSH or denial-of-service attacks on Linux servers, a...

http://www.linuxandubuntu.com/home/how-to-use-angry-ip-scanner-network-scanner

How To Use Angry IP Scanner (Network Scanner)