fail2ban - a set of server and client programs to limit brute force authentication attempts.

       Manual page written by Daniel Black and Yaroslav Halchenko

       Copyright © 2013
       Copyright of modifications held by their respective authors.   Licensed  under  the  GNU  General  Public
       License v2 (GPL).

       Fail2Ban  consists  of  a  client,  server  and  configuration  files to limit brute force authentication
       attempts.

       The server program fail2ban-server  is  responsible  for  monitoring  log  files  and  issuing  ban/unban
       commands.   It  gets  configured  through  a  simple  protocol  by  fail2ban-client,  which can also read
       configuration files and issue corresponding configuration commands to the server.

       For details on the configuration of fail2ban see the jail.conf(5) manual page.  A jail (as  specified  in
       jail.conf) couples filters and actions definitions for any given list of files to get monitored.

       For details on the command-line options of fail2ban-server see the fail2ban-server(1) manual page.

       For  details  on the command-line options and commands for configuring the server via fail2ban-client see
       the fail2ban-client(1) manual page.

       For testing regular expressions specified in a filter using the fail2ban-regex program may be of use  and
       its manual page is fail2ban-regex(1).

/etc/fail2ban/*

       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.

       A local user is able to inject messages into syslog and using a Fail2Ban jail  that  reads  from  syslog,
       they  can  effectively  trigger  a DoS attack against any IP. Know this risk and configure Fail2Ban/grant
       shell access accordingly.

       fail2ban - a set of server and client programs to limit brute force authentication attempts.

       Report bugs to https://github.com/fail2ban/fail2ban/issues

fail2ban-server(1) fail2ban-client(1) fail2ban-regex(1) jail.conf(5)

Fail2Ban                                           March 2013                                        FAIL2BAN(1)