Redmine

h1. HowTo Configure Fail2ban For Redmine

h2. Install

install fail2ban with apt-get if not installed ( or use yum, pacman or another package manager)

<pre>

 apt-get install fail2ban

</pre>

h2. Configure

create a new file in /etc/fail2ban/filter.d/redmine.conf

explanation: here we create our new filter to match failed login attempts

<pre>

# redmine configuration file

#

# Author: David Siewert

#

# $Revision$

#

[Definition]

failregex = Failed [-/\w]+ for .* from <HOST>

# Option:  ignoreregex

# Notes.:  regex to ignore. If this regex matches, the line is ignored.

# Values:  TEXT

#

ignoreregex =

# Source:

#http://www.fail2ban.org/wiki/index.php/MANUAL_0_8

</pre>

add following lines somewhere in your /etc/fail2ban/jail.conf

explanation: here we enable our newly createt filter and add some configuration options

<pre>

[redmine]

enabled  = true

filter   = redmine

port     = 80,443

#backend  = polling

action   = iptables-allports[name=redmine]

logpath  = /var/log/redmine/default/production.log

maxretry = 5

findtime = 7320

bantime  = 7320

</pre>

note 1:

if you our web server uses local time, then you need to increase findtime and bantime accordingly to the drift in comparison to UTC time

in my example configuration i used 2 h + 2 minutes = 3600 * 2 +120  = 7320,

because my local server time was always 2 hours earlier and i added 2 minutes just in case

note 2:

if you do not use redmine in production mode, then you need to change the logpath as well

note 3:

if this configuration does not work, you can try uncommenting "backend  = polling"

h2. Test

if you make any changes, you can check the syntax with:

<pre>

fail2ban-regex /var/log/redmine/default/production.log /etc/fail2ban/filter.d/redmine.conf 

</pre>

finally start/restart fail2ban

<pre>

/etc/init.d/fail2ban restart

</pre>

and test if you can get yourself banned :)

note: your failed login attempts need to match the maxretry value in /etc/fail2ban/jail.conf