081 | The Modern Approach: CrowdSec — Crowdsourced Threat Protection

2025-08-13

Introduction: From Local Defense to Global Protection

In the previous article, we explored Fail2ban — a reliable and time-tested tool for defending against brute-force attacks. However, Fail2ban only works with local logs and has no awareness of what’s happening on other servers. In today’s environment, where cyberattacks are increasingly distributed and sophisticated, we need a smarter and more collaborative solution.

Enter CrowdSec — a modern, open-source Intrusion Prevention System (IPS) that leverages a crowdsourced approach to build a global threat intelligence network.

080 | Classic Brute-Force Protection: Fail2ban

2025-08-12

Introduction: Server Security — The First Line of Defense

Once you deploy any server or virtual machine, one of the first and most important tasks is ensuring its security. Even if your server doesn’t contain critical data, it can still be targeted by automated bots constantly scanning the internet for vulnerabilities. The most common type of attack against any server is brute-force password guessing, typically aimed at SSH access, FTP services, or web control panels.