Fail2Ban: Daemon to ban hosts that cause multiple authentication errors
Fail2Ban is a self-hosted networking and security tool. Daemon to ban hosts that cause multiple authentication errors.
Why self-host Fail2Ban
Self-hosting Fail2Ban removes the dependency on a third-party service. For anyone who values data ownership, that matters more than convenience in the long run.
What it does
Fail2Ban falls into the Networking, Security category of self-hosted software. It is designed to be deployed on your own infrastructure, whether that is a home server, a VPS, or a local machine running Docker.
Community traction
The project has 11k stars on GitHub, which is a reasonable proxy for how widely it is used. Active repositories tend to ship bug fixes faster and have better documentation than projects that stall after the initial release.
Deployment
Docker is the most common deployment path. If you are already running containers at home, adding Fail2Ban to a compose file is a low-friction way to try it.
Maturity
The current release is 1.1.0. The project has moved past early development and tends to ship stable, documented releases.
License
It is licensed under GPL-2.0, making it freely available for personal and commercial use.
Links
Fail2Ban is worth a look if you are building out a homelab or trying to reduce your dependence on hosted services. The setup cost is usually low and the upside is real data ownership.