A collection of articles, tutorials and blog entries on various computer technical architecture, hardware and software.
Migrating to Dropwizard version 0.7.0 was anything but straightforward so I thought I would share some of the migration changes need for upgrading to the latest release of from version 0.6.x. The Release notes are a good place to start, but beyond that an... read more
Migrating to Dropwizard version 0.8.0 was easier than the update from 0.6.x to 0.7.0, but there were still some hang ups, so I thought I would share some of the migration changes need for upgrading to the latest release of from version 0.7.x. The Release ... read more
Since version 1.5, there is a new plugin management system for Logstash. Plugin repositories are now located at github.com/logstash-plugins. Plugins are now self-contained Ruby gem whose source code lives in its own GitHub repository. The Ruby gem is host... read more
The Bro Network Security Monitor is an open source network monitoring framework. In a nutshell, Bro monitors packet flows over a network with a network tap installed with optional bonded network interfaces, and creates high-level “flow” events... read more
The Bro Network Security Monitor is an open source network monitoring framework. In a nutshell, Bro monitors packet flows over a network and creates high-level “flow” events from them and stores the events as single tab-separated lines in a lo... read more
Elastic Search, Logstash and Kibana – the ELK Stack – is emerging as the best technology stack to collect, manage and visualize big data. If you came here looking for help installing the ELK stack, you don’t need an introduction, so let&... read more
A Plethora of Tools for Machine Learning When it comes to training computers to act without being explicitly programmed there exist an abundance of tools from the field of Machine Learning. Academics and industry professionals use these tools for building... read more
Introduction The Knowm Development Team needs access to affordable research and development platforms for distributed computing. To address this need, we have paired Adapteva’s powerful and affordable Parallella boards with Apache Storm to create an... read more
Port Bonding When using a passive or active LAN tap and not an “aggregator” or “mirror port” for monitoring network traffic, both the ‘incoming’ and ‘outgoing’ channels need to be bonded together for IDS sys... read more
Introduction For proper cluster functionality, all nodes in the cluster need to have their clocks synchronized, even when the cluster is isolated from the Internet and global time sync servers. To accomplish this, we installed NTP on Ubuntu/Linux and conf... read more