Here is a new development release with pretty much improvements.
"timeregex" and "timepattern" are no more required in filters because a
date detector has been added. An interactive mode, a new tool,
fail2ban-regex, and better client output are also part of this release.
Please look at the ChangeLog for a complete list of changes.
Look at "jail.conf" which contains some jail templates.
Fail2ban 0.7.2 is considered beta software. I need feedback and bug
reports. So please, test it ;)