Daemon to ban hosts that cause multiple authentication errors

国内恶意IP封禁计划，还赛博空间一片朗朗乾坤

Centralize or distribute IPset blacklists

CrowdSec is an open-source cyber security tool. This plugin blocks detected attackers or display them a captcha.

wolfSSL Intrusion Detection and Prevention System (IDPS)

Simple & efficient log file scanning and iptable filtering

The official PHP bouncers library for the CrowdSec LAPI

Execute actions based on log records

ipset/nftables-based banning utility

React to text in log files or journal

Nope! A lightweight tool for monitoring your log files and dynamically blocking nuisance or malicious IPs based on easy to define, dynamic rules which you control

Dynamically change firewall