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OpenSource For You
June  2016   Issue Vol. 4  No. 9 

Admin - Lets Try
Implementing a Software Defined Network (SDN)
Based Firewall

Get the feel of software defined networking (SDN) — an approach to computer networking that allows admins to manage services by abstracting higher-level functionality. This article explains how to implement an SDN based firewall using SDN controllers in Python

Admin - How To
OPNsense: Setting Up the Basic Firewall
Security concerns prompt the securing of networks against hacking and intrusion. OPNsense is an open source, FreeBSD based firewall and routing platform. It includes most of the features available in expensive commercial firewalls, and often even more. It combines the rich feature set of commercial offerings with the benefits of open and verifiable sources.
Admin - How To
pfSense: The Popular Open Source Firewall
pfsense.org has an interesting slogan: “We make network security easy.” With thousands of enterprises using pfSense software, it is rapidly becoming the world’s most popular open source network security solution. pfSense is indeed an excellent firewall.
 
Developers-Insight
What is ElasticSearch?
A real-time, distributed search and analytics engine, ElasticSearch is used for full text search, structured search, analytics, and all three in combination. In short, it helps us to make sense of all the data that’s being hurled at us every day.
Admin - How To
Network Troubleshooting Using a Packet Sniffer called Wireshark
This article describes how you can check and analyse data passing through a network using a popular packet sniffer called Wireshark.
 
Admin - How To
Getting Started with Docker Swarm
In this article, we present Docker Swarm, a native clustering tool that turns a pool of Docker hosts into a single virtual Docker host.
Admin - How To
An Introduction to Linux System Administration
This series of articles, which explains various concepts and commands in Linux, is aimed at those new to Linux. We take a look at the basics of Linux to gain a better understanding of the power it has.
 
Admin - Lets Try
Netcat: The TCP/IP Swiss Army Knife
Here’s an introduction to Netcat, the powerful computer networking utility that performs numerous network related tasks. It is designed to be a dependable back-end, which can be run independently or in conjunction with other programs and scripts.
Admin - Lets Try
Vdbench: A Storage Benchmarking Tool
Considered one of the most versatile of benchmarks, Vdbench can be used as a GUI tool or a CLI tool. It is highly portable and works on different platforms like Windows, Solaris, Linux, AIX, OS/X and HP/UX.
 
Admin - Lets Try
Creating Your Own Application in OpenDaylight
Hosted by the Linux Foundation, the OpenDaylight project was created to promote software defined networking (SDN) and to create a solid foundation for network functions virtualisation. This article takes you through the steps needed to create an application in OpenDaylight.
Admin - Lets Try
The Many Approaches to Sandboxing in Linux
You can isolate malicious programs or risky tasks by sandboxing them in different ways to stop them from affecting your main system. This article gives the reader a working knowledge of sandboxing in Linux.
 
Admin - Insight
Boost System Performance with Linux Kernel
Recompilation/Optimisation

Are you facing performance issues with your old system, but don’t want to spend money buying a new one? The techniques mentioned in this article could boost your system’s performance by just making a few minor changes in the Linux operating system.
Admin - Insight
Iptables: The Flexible Firewall Utility for inux
This article covers the basics of Iptables and will add to your understanding of this firewall utility. After going through it, you can try your hand at mixing and matching different sets of rules as per your needs.
 
Developers-How To
Abot: An Open Source Tool to
Create your own Digital Assistant!

Virtual assistants are huge pieces of complex software. Abot makes it easy and fun to create one, since it comes with everything you need to get started.
Developers-How To
Build a Privacy Based Search Extension for Opera in a Few Minutes
For those who love getting their hands dirty tinkering with software, we offer a great opportunity!
 
Developers-How To
Publishing an App Inventor App to the Google Play Store
While reaching for this article in our very popular series on creating Android apps with App Inventor 2, some of our readers must be wondering, “What next?” The logical thing would be to make the app available to everyone who would like to use it. So this is how to go about it...
Developers-Overview
The Basic Elements of AngularJS
Here is an introductory article to AngularJS, a very powerful JavaScript framework. It can be added to an HTML page with a script tag. Read on to know and understand more about its features.
 
Developers-Overview
The Basics of JavaScript and jQuery
JavaScript is the programming language of HTML and the Web. jQuery is a JavaScript library designed to simplify client side scripting of HTML. This article introduces readers to the basics of both.
For U & Me - Interview
We help organisations reap the benefits of open source, while controlling security and the associated risks
Security is crucial in the world of open source. But so far, there have been just a handful of companies that enable open source deployments in a secure and safe manner. BobCanaway, CMO of Black Duck, in an interaction with Jagmeet Singh from OSFY, talked of the new solutions to secure open source deployments. Here are excerpts from the conversation.
 
Developers-Overview
Five Python Libraries that Make Web Content
Extraction Simple

Content extraction from Web pages occurs in a variety of domains such as information retrieval, data mining, etc. This article introduces five power-packed Python libraries that make the process of content extraction from Web resources simple and quick.
Developers-Overview
An Introduction to Emacs Lisp
We have covered a lot of ground in our quest to learn the intricacies of Emacs and we trust that you have found your long journey fulfilling. This is the last article in the series.
 
Developers-Insight
JavaScript: The New Parts
In this tenth and final part of the series, we learn about Generators, the most exciting and significant feature of ES6. It builds on features, iterators and iterables covered in previous articles in this series. It is recommended that you review those before reading further.
Developers - Insight
Visualisation Tools in Python
The value of data is enhanced by visualisation. With numerous methods of visualisation available, one would like to choose an option that gives the best results. The versatile Python programming language offers one such option.
 














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