Fail2Ban scans log files and bans IPs that show the malicious signs -- too many password failures, seeking for exploits, etc. Generally Fail2Ban is then used to update firewall rules to reject the IP addresses for a specified amount of time, although any arbitrary other action (e.g. sending an email) could also be configured. Out of the box Fail2Ban comes with filters for various services (apache, courier, ssh, etc). Fail2Ban is able to reduce the rate of incorrect authentications attempts however it cannot eliminate the risk that weak authentication presents. Configure services to use only two factor or public/private authentication mechanisms if you really want to protect services.

Features

  • Ban hosts that cause multiple authentication errors
  • You can configure Fail2Ban using the files in /etc/fail2ban
  • It is possible to configure the server using commands sent to it by fail2ban-client
  • The available commands are described in the fail2ban-client(1) manpage
  • Fail2Ban is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License
  • Fail2Ban comes out-of-the-box ready to read many standard log files

Project Samples

Project Activity

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Categories

Authentication

License

GNU General Public License version 2.0 (GPLv2)

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Fail2Ban Web Site

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Additional Project Details

Operating Systems

Linux, Mac

Programming Language

Python

Related Categories

Python Authentication Software

Registered

2021-09-09