Alternatives to Fail2ban
Log-watching daemon that bans addresses after repeated authentication failures. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Fail2ban
Log-watching daemon that bans addresses after repeated authentication failures.
Replacements
Listings that take over the same core job as Fail2ban.
CrowdSec
Detect suspicious behavior in server logs and web traffic.
CrowdSec detects suspicious behavior in logs with configurable scenarios and community intelligence, runs on Windows as well, and needs a separate enforcement integration to block traffic.
OSSEC
An open-source host-based intrusion detection system with log analysis, file integrity monitoring and active response.
OSSEC is a self-hosted host intrusion detection system that combines log analysis with file integrity monitoring and active response, giving broader coverage with more configuration to learn.
Similar software
Related functionality, not a direct replacement.
Suricata
Inspect network traffic with an intrusion-detection engine.
Snort
Open-source intrusion detection and prevention system.
IPFire
A hardened Linux-based firewall distribution with VPN support, network segmentation and a web management console.
OPNsense
An open-source firewall and routing platform based on FreeBSD that you install on your own hardware.
Wazuh Agent
Endpoint agent that feeds a Wazuh server with security and compliance data.
Zeek
Network analysis framework that turns traffic into high-level activity logs.
