F2
Fail2Ban
Intrusion prevention software. Ban IPs that show malicious signs based on log file analysis.
About Fail2Ban
Fail2Ban scans log files like /var/log/auth.log and bans IP addresses conducting too many failed login attempts. It updates firewall rules to reject the IP address for a configurable amount of time.
Key Features
✓ Log file monitoring
✓ Configurable ban actions
✓ Multiple jail support
✓ Email notifications
✓ Whitelisting & regex filters
✓ iptables, nftables, firewalld support
Why choose Fail2Ban?
Fail2Ban is an open source alternative to CrowdSec, DenyHosts. Licensed under GPL-2.0, it gives you full access to the source code and the freedom to modify, self-host, and contribute. You can deploy it on your own servers for complete data ownership and privacy.