Blog

Modify your static IP on Ubuntu server

Sysadmin

This seems easy, but... When you modify your static IP address in /etc/network/interfaces, the old IP is not removed. The new IP is simply added to your interface.

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Disable user registration in your Laravel application

Laravel

Laravel is a powerful framework that comes with a lot of boilerplate code to handle most common cases. One of these is users management (register, login, reset password etc.)

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Easy testing with Python doctest and GitLab

Python GitLab

When developing some new Python code, you will usually open another terminal to test your function or class using a Python shell... and repeat until you obtain the expected result.

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Type hinting in Python, and testing with GitLab

Python GitLab

Python is a dynamically typed language, meaning that the type of a variable can change during execution. This participates to the user friendliness of the language.

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Collecting and processing NetFlow on Ubuntu

NetFlow is a feature that was introduced on Cisco routers around 1996 that provides the ability to collect and process network traffic summary.

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CyberSecurity Tournament 2020

News

In February 2020, ULB will organize a CyberSecurity Tournament for students. This is a unique opportunity to challenge your skills and get in touch with major companies of the field.

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MongoDB sharding on a single server

Sharding is a method for distributing data (and load) across multiple machines. In this blog post we show how to test MongoDB sharding by running multiple MongoDB instances on a single Ubuntu 16.04 machine.

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Apache Spark MapReduce with PHP

PHP

When it comes to Big Data processing, I'm a huge fan of the Apache Spark project. Spark is a very powerful tool to analyse very large datasets in parallel, and at the same time it provides a nice API that allows to write clean distributed code.

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Using LaBrea Tarpit to hinder network scans

When hackers prepare a network attack, they usually start with a network scan to detect running computers and installed software.

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BeMilCIS2019 : Blockchain for dummies

Blockchain

Today we are proud to present a paper at BeMilCIS conference entitled Blockchain for dummies.

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A simple java implementation of Blockchain

Blockchain

Blockchain is currently a very hot research topic. To understand how it works and what it can achieve, here is a simple java implementation.

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Blockchain

Blockchain

These last few years everyone everywhere went crazy about cryptocurrencies and more in particular about Bitcoin. The value of the star cryptocurrency did indeed sky-rocket in December 2017 to 19.783$, a 1824% increase in less than a year [2]. However, even though everybody has probably heard about this digital currency, it's likely that very few understand the fascinating technology behind it called blockchain.

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