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FAIL2BAN(1) General Commands Manual FAIL2BAN(1) NAME fail2ban - a set of server and client programs to limit brute force au- thentication attempts. DESCRIPTION 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 fail2ban- 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 mon- itored. 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). LIMITATION Fail2Ban is able to reduce the rate of incorrect authentications at- tempts 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. FILES /etc/fail2ban/* AUTHOR Manual page written by Daniel Black and Yaroslav Halchenko REPORTING BUGS Report bugs to https://github.com/fail2ban/fail2ban/issues COPYRIGHT Copyright (C) 2013 Copyright of modifications held by their respective authors. Licensed under the GNU General Public License v2 (GPL). SEE ALSO fail2ban-server(1) fail2ban-client(1) fail2ban-regex(1) fail2ban- jail.conf(5) Fail2Ban March 2013 FAIL2BAN(1)
NAME | DESCRIPTION | LIMITATION | FILES | AUTHOR | REPORTING BUGS | COPYRIGHT | SEE ALSO
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