fail2ban/config/jail.conf

# Fail2Ban jail specifications file
#
# WARNING: heavily refactored in 0.9.0 release.  Please review and
#          customize settings for your setup.
#
# Comments: use '#' for comment lines and ';' for inline comments
#
# Changes:  in most of the cases you should not modify this
#           file, but provide customizations in jail.local file,
#           or separate .conf files under jail.d/ directory, e.g.:
#
# [DEFAULT]
# bantime = 3600
#
# [sshd]
# enabled = true
#
# See jail.conf(5) man page for more information

# The DEFAULT allows a global definition of the options. They can be overridden
# in each jail afterwards.

[DEFAULT]

#
# MISCELANEOUS OPTIONS
#

# "ignoreip" can be an IP address, a CIDR mask or a DNS host. Fail2ban will not
# ban a host which matches an address in this list. Several addresses can be
# defined using space separator.
ignoreip = 127.0.0.1/8

# "bantime" is the number of seconds that a host is banned.
bantime  = 600

# A host is banned if it has generated "maxretry" during the last "findtime"
# seconds.
findtime  = 600

# "maxretry" is the number of failures before a host get banned.
maxretry = 5

# "backend" specifies the backend used to get files modification.
# Available options are "pyinotify", "gamin", "polling" and "auto".
# This option can be overridden in each jail as well.
#
# pyinotify: requires pyinotify (a file alteration monitor) to be installed.
#              If pyinotify is not installed, Fail2ban will use auto.
# gamin:     requires Gamin (a file alteration monitor) to be installed.
#              If Gamin is not installed, Fail2ban will use auto.
# polling:   uses a polling algorithm which does not require external libraries.
# auto:      will try to use the following backends, in order:
#              pyinotify, gamin, polling.
backend = auto

# "usedns" specifies if jails should trust hostnames in logs,
#   warn when reverse DNS lookups are performed, or ignore all hostnames in logs
#
# yes:   if a hostname is encountered, a reverse DNS lookup will be performed.
# warn:  if a hostname is encountered, a reverse DNS lookup will be performed,
#        but it will be logged as a warning.
# no:    if a hostname is encountered, will not be used for banning,
#        but it will be logged as info.
usedns = warn

# "logencoding" specifies the encoding of the log files handled by the jail
#   This is used to decode the lines from the log file.
#   Typical examples:  "ascii", "utf-8"
#
#   auto:   will use the system locale setting
logencoding = auto

# "enabled" enables the jails.
#  By default all (but sshd) jails are disabled.
#   It is unlikely that the default value should ever be changed.
#   Enable only relevant to your setup jails in your .local or jail.d/*.conf
#
# true:  jail will be enabled and lofiles will get monitored for changes
# false: jail is not enabled
enabled = false


# "filter" defines the filter to use by the jail.
#  By default jails have names matching their filter name
#
filter = %(__name__)s


#
# ACTIONS
#

# Some options used for actions

# Destination email address used solely for the interpolations in
# jail.{conf,local} configuration files.
destemail = root@localhost

# E-mail action. Since 0.8.1 Fail2Ban uses sendmail MTA for the
# mailing. Change mta configuration parameter to mail if you want to
# revert to conventional 'mail'.
mta = sendmail

# Default protocol
protocol = tcp

# Specify chain where jumps would need to be added in iptables-* actions
chain = INPUT

#
# Action shortcuts. To be used to define action parameter

# Default banning action (e.g. iptables, iptables-new,
# iptables-multiport, shorewall, etc) It is used to define
# action_* variables. Can be overridden globally or per
# section within jail.local file
banaction = iptables-multiport

# The simplest action to take: ban only
action_ = %(banaction)s[name=%(__name__)s, port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"]

# ban & send an e-mail with whois report to the destemail.
action_mw = %(banaction)s[name=%(__name__)s, port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"]
            %(mta)s-whois[name=%(__name__)s, dest="%(destemail)s", protocol="%(protocol)s", chain="%(chain)s"]

# ban & send an e-mail with whois report and relevant log lines
# to the destemail.
action_mwl = %(banaction)s[name=%(__name__)s, port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"]
             %(mta)s-whois-lines[name=%(__name__)s, dest="%(destemail)s", logpath=%(logpath)s, chain="%(chain)s"]

# Choose default action.  To change, just override value of 'action' with the
# interpolation to the chosen action shortcut (e.g.  action_mw, action_mwl, etc) in jail.local
# globally (section [DEFAULT]) or per specific section
action = %(action_)s


#
# JAILS
#

#
# SSH servers
#

[sshd]

enabled = true
port    = ssh
logpath = /var/log/auth.log
          /var/log/sshd.log

[sshd-ddos]

port    = ssh
logpath = /var/log/auth.log
          /var/log/sshd.log

[dropbear]

port     = ssh
filter   = sshd
logpath  = /var/log/dropbear


# Generic filter for PAM. Has to be used with action which bans all
# ports such as iptables-allports, shorewall

[pam-generic]

# pam-generic filter can be customized to monitor specific subset of 'tty's
banaction = iptables-allports
# port actually must be irrelevant but lets leave it all for some possible uses
port     = anyport
logpath  = /var/log/auth.log

[xinetd-fail]

port      = all
banaction = iptables-multiport-log
logpath   = /var/log/daemon.log
maxretry  = 2

# .. custom jails

# Here we use TCP-Wrappers instead of Netfilter/Iptables. "ignoreregex" is
# used to avoid banning the user "myuser".

[sshd-tcpwrapper]

filter      = sshd
action      = hostsdeny
              sendmail-whois[name=SSH, dest=you@example.com]
ignoreregex = for myuser from
logpath     = /var/log/sshd.log

# Here we use blackhole routes for not requiring any additional kernel support
# to store large volumes of banned IPs

[sshd-route]

filter = sshd
action = route
logpath = /var/log/sshd.log

# Here we use a combination of Netfilter/Iptables and IPsets
# for storing large volumes of banned IPs
#
# IPset comes in two versions. See ipset -V for which one to use
# requires the ipset package and kernel support.
[sshd-iptables-ipset4]

filter   = sshd
action   = iptables-ipset-proto4[name=SSH, port=ssh, protocol=tcp]
logpath  = /var/log/sshd.log

[sshd-iptables-ipset6]

filter   = sshd
action   = iptables-ipset-proto6[name=SSH, port=ssh, protocol=tcp, bantime=600]
logpath  = /var/log/sshd.log

# This jail uses ipfw, the standard firewall on FreeBSD. The "ignoreip"
# option is overridden in this jail. Moreover, the action "mail-whois" defines
# the variable "name" which contains a comma using "". The characters '' are
# valid too.

[sshd-ipfw]

filter   = sshd
action   = ipfw[localhost=192.168.0.1]
           sendmail-whois[name="SSH,IPFW", dest=you@example.com]
logpath  = /var/log/auth.log
ignoreip = 168.192.0.1


#
# HTTP servers
#

[apache-auth]

port     = http,https
logpath  = /var/log/apache*/*error.log

# Ban hosts which agent identifies spammer robots crawling the web
# for email addresses. The mail outputs are buffered.

[apache-badbots]

port     = http,https
logpath  = /var/log/apache*/*access.log
		   /var/www/*/logs/access_log
bantime  = 172800
maxretry = 1

[apache-noscript]

port     = http,https
logpath  = /var/log/apache*/*error.log
maxretry = 6

[apache-overflows]

port     = http,https
logpath  = /var/log/apache*/*error.log
maxretry = 2

# Ban attackers that try to use PHP's URL-fopen() functionality
# through GET/POST variables. - Experimental, with more than a year
# of usage in production environments.

[php-url-fopen]

port    = http,https
logpath = /var/www/*/logs/access_log

# A simple PHP-fastcgi jail which works with lighttpd.
# If you run a lighttpd server, then you probably will
# find these kinds of messages in your error_log:
#   ALERT – tried to register forbidden variable ‘GLOBALS’
#   through GET variables (attacker '1.2.3.4', file '/var/www/default/htdocs/index.php')

[lighttpd-fastcgi]

port    = http,https
logpath = /var/log/lighttpd/error.log

# Same as above for mod_auth
# It catches wrong authentifications

[lighttpd-auth]

port    = http,https
logpath = /var/log/lighttpd/error.log

[roundcube-auth]

port     = http,https
logpath  = /var/log/roundcube/userlogins

[sogo-auth]

port     = http,https
# without proxy this would be:
# port    = 20000
logpath  = /var/log/sogo/sogo.log

# ... custom jails

[apache-tcpwrapper]

filter	 = apache-auth
action   = hostsdeny
logpath  = /var/log/apache*/*error.log
maxretry = 6


#
# FTP servers
#


[proftpd]

port     = ftp,ftp-data,ftps,ftps-data
logpath  = /var/log/proftpd/proftpd.log

[pure-ftpd]

port     = ftp,ftp-data,ftps,ftps-data
logpath  = /var/log/auth.log
maxretry = 6

[vsftpd]

port     = ftp,ftp-data,ftps,ftps-data
logpath  = /var/log/vsftpd.log
# or overwrite it in jails.local to be
# logpath = /var/log/auth.log
# if you want to rely on PAM failed login attempts
# vsftpd's failregex should match both of those formats

# Do not ban anybody. Just report information about the remote host.
# A notification is sent at most every 600 seconds (bantime).

[vsftpd-notification]

filter   = vsftpd
action   = sendmail-whois[name=VSFTPD, dest=you@example.com]
logpath  = /var/log/vsftpd.log
maxretry = 5
bantime  = 1800


[wuftpd]

port     = ftp,ftp-data,ftps,ftps-data
logpath  = /var/log/syslog
maxretry = 6

#
# Mail servers
#

[couriersmtp]

port     = smtp,ssmtp
logpath  = /var/log/mail.log

[postfix]

port     = smtp,ssmtp
logpath  = /var/log/mail.log

# The hosts.deny path can be defined with the "file" argument if it is
# not in /etc.

[postfix-tcpwrapper]

filter   = postfix
action   = hostsdeny[file=/not/a/standard/path/hosts.deny]
           sendmail[name=Postfix, dest=you@example.com]
logpath  = /var/log/postfix.log
bantime  = 300

#
# Mail servers authenticators: might be used for smtp,ftp,imap servers, so
# all relevant ports get banned
#

[courierauth]

port     = smtp,ssmtp,imap2,imap3,imaps,pop3,pop3s
filter   = courierlogin
logpath  = /var/log/mail.log


[sasl]

port     = smtp,ssmtp,imap2,imap3,imaps,pop3,pop3s
# You might consider monitoring /var/log/mail.warn instead if you are
# running postfix since it would provide the same log lines at the
# "warn" level but overall at the smaller filesize.
logpath  = /var/log/mail.log

[dovecot]

port    = smtp,ssmtp,imap2,imap3,imaps,pop3,pop3s
logpath = /var/log/mail.log

#
# DNS servers
#

# These jails block attacks against named (bind9). By default, logging is off
# with bind9 installation. You will need something like this:
#
# logging {
#     channel security_file {
#         file "/var/log/named/security.log" versions 3 size 30m;
#         severity dynamic;
#         print-time yes;
#     };
#     category security {
#         security_file;
#     };
# };
#
# in your named.conf to provide proper logging.
# This jail blocks UDP traffic for DNS requests.

# !!! WARNING !!!
#   Since UDP is connection-less protocol, spoofing of IP and imitation
#   of illegal actions is way too simple.  Thus enabling of this filter
#   might provide an easy way for implementing a DoS against a chosen
#   victim. See
#    http://nion.modprobe.de/blog/archives/690-fail2ban-+-dns-fail.html
#   Please DO NOT USE this jail unless you know what you are doing.
#
# [named-refused-udp]
#
# filter   = named-refused
# port     = domain,953
# protocol = udp
# logpath  = /var/log/named/security.log
# ignoreip = 168.192.0.1

# This jail blocks TCP traffic for DNS requests.

[named-refused]

filter   = named-refused
port     = domain,953
logpath  = /var/log/named/security.log
ignoreip = 168.192.0.1

#
# Miscelaneous
#

# Multiple jails, 1 per protocol, are necessary ATM:
# see https://github.com/fail2ban/fail2ban/issues/37
[asterisk-tcp]

filter   = asterisk
port     = 5060,5061
protocol = tcp
logpath  = /var/log/asterisk/messages
maxretry = 10

[asterisk-udp]

filter	 = asterisk
port     = 5060,5061
protocol = udp
logpath  = /var/log/asterisk/messages
maxretry = 10

# To log wrong MySQL access attempts add to /etc/my.cnf:
# log-error=/var/log/mysqld.log
# log-warning = 2
[mysqld-auth]

port     = 3306
logpath  = /var/log/mysqld.log

[guacamole]

port     = http,https
logpath  = /var/log/tomcat*/catalina.out

# Jail for more extended banning of persistent abusers
# !!! WARNING !!!
#   Make sure that your loglevel specified in fail2ban.conf/.local
#   is not at DEBUG level -- which might then cause fail2ban to fall into
#   an infinite loop constantly feeding itself with non-informative lines
[recidive]

logpath  = /var/log/fail2ban.log
action   = iptables-allports[name=recidive]
           sendmail-whois-lines[name=recidive, logpath=/var/log/fail2ban.log]
bantime  = 604800  ; 1 week
findtime = 86400   ; 1 day
maxretry = 5