CrowdSec is described as 'Security automation engine, using both local IP behavior detection & our community-driven IP reputation database' and is a Firewall in the security & privacy category. There are six alternatives to CrowdSec for Linux, Windows, Web-based, Self-Hosted and SaaS. The best CrowdSec alternative is Cloudflare, which is free. Other great apps like CrowdSec are Fail2ban, IPBanPro, reaction and Denyhosts.
Delivers SaaS transparent proxy to shield websites, integrating dynamic DNS, global CDN, and web application firewall; blocks DDoS and targeted attacks, optimizes traffic for speed, reduces server load, analyzes threats, supports flexible deployment, and caching features.
Fail2ban scans log files (e.g. /var/log/apache/error_log) and bans IPs that show the malicious signs -- too many password failures, seeking for exploits, etc. Generally Fail2Ban is then used to update firewall rules to reject the IP addresses for a specified amount of time...
IPBan is a FREE and open source application that allows auto banning ip addresses from failed login attempts. Many sources are watched such as SSH, SMTP, SQL-Server, MySQL, RDP and dropped packets.
The idea of denying access to SSH servers is nothing new and I was inspired by many other scripts that I discovered. However, none of them did things the way I envisioned them to. Also, they were all shell scripts which do not offer the elegance of Python.
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