Author: Supriyo Biswas

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An Introduction to the Docker Ecosystem

Traditionally, developing an application and deploying it in a production environment hasn’t been easy. Development and production environments are often configured differently, which makes it difficult to resolve problems quickly when something was broken. A...

A Guide to SSH Port Forwarding/Tunnelling

SSH is a widely used protocol for system administration and file transfer. In addition, it has a feature called SSH tunnelling  (or SSH port forwarding). It creates an encrypted connection between a local computer...

Building a Spam Filter Using Machine Learning

Machine learning is everywhere. From self driving cars to face recognition on Facebook, it is machine learning behind the scenes that drives all of it. If you’ve ever used GMail or Yahoo Mail, you...

Customizing and coloring the bash prompt

If you’re already not familiar with bash, the prompt is the little blurb of text displayed when it asks for a command. It capable of communicating a lot, but most people don’t use it...

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Protecting SSH with Fail2ban

SSH allows you to log in to a remote computer or server and control it through a command-line interface. However, because SSH is exposed to the internet; attackers can try to log in by...

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Blocking bad bots with Fail2ban

Fail2ban is a versatile security tool. While it is primarily used for preventing brute-force attacks against SSH, it can also be used for protecting other services. There are bots which go around scanning the...