ids

Daemon to ban hosts that cause multiple authentication errors

CrowdSec - the open-source and participative security solution offering crowdsourced protection against malicious IPs and access to the most advanced real-world CTI.

Main Sigma Rule Repository

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine developed by the OISF and the Suricata community.

A small PHP library to generate YouTube-like ids from numbers. Use it when you don't want to expose your database ids to the user.