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Fail2ban scans log files (e.g. /var/log/apache/error_log) and bans IPs that show the malicious signs -- too many password failures, seeking for exploits, etc. Generally Fail2Ban 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, or ejecting CD-ROM tray) could also be configured. Out of the box Fail2Ban comes with filters for various services (apache, curier, ssh, etc).

Fail2ban

ChangeLog (List of changes)
Requirements (Needed requirements for Fail2ban)
Features (List of current and planned features)
Screenshots (Screenshots)
Downloads (Fail2ban for your distribution)
Links (Links related to Fail2ban)
Mailing list (Support and discussions)

Documentation

README (Official README file)
Manual (Official Fail2ban documentation)
Configuration (Configuration related to external software)
FAQ (Frequently Asked Questions)
HOWTOs (HOWTOs contributed by users)
Reference Manual (Source code documentation)
Proposed documentation for Hostname vs. IP Address Logging

Developers

Contributors (persons who contributed to the project)

News

2011/11/28 0.8.6 is out. Various fixes (racing condition etc) and enhancements see Changelog.

2011/09/28 Development version control switched from SVN to GIT on github.com.

2009/09/07 More than 1 year after 0.8.3, here is 0.8.4 and... Arturo 'Buanzo' Busleiman, new member of Fail2ban development team. Read the announcement.

2008/07/18 Here is a new release of fail2ban. 0.8.3 should fix the famous "Unknown error 514" and the wrong PID in fail2ban.pid. There are a few more fixes and improvements. I have not yet applied all the patches I received. This will be done in a next release.

2008/07/17 I will release 0.8.3 soon but Sourceforge.net seems to be migrating their services. I have some issues with their subversion repositories at the moment.

2008/03/06 0.8.2 is finally out. This one contains a lot of fixes and new features. So I hope we have not introduced to many bugs. Please read the announcement and take a look at the ChangeLog.

More News

Latest versions

stable  : fail2ban-0.8.4
unstable  : fail2ban-0.7.9

To experiment with this wiki try Sandbox. See the User's Guide for usage and configuration help.

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