fail2ban/config/fail2ban.conf.default

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# Fail2Ban configuration file
#
# $Revision: 1.9 $
#
# 2005.06.21 modified for readability Iain Lea iain@bricbrac.de
[DEFAULT]
# Option: background
# Notes.: start fail2ban as a daemon. Output is redirect to logfile.
# Values: [true | false] Default: false
#
background = true
# Option: verbose
# Notes.: verbosity of the output.
# 0 - regular level
# 1 - INFO level
# 2 - DEBUG level (but commands get executed as opposed to
# debug option)
# Values: NUM Default: 0
#
verbose = 1
# Option: debug
# Notes.: enable debug mode. No real commands gets executed but only
# reported, more verbose output, bypass root user test.
# Values: [true | false] Default: false
#
debug = false
# Option: logtargets
# Notes.: log targets. Space separated list of logging targets.
# Values: STDERR SYSLOG file Default: /var/log/fail2ban.log
#
logtargets = /var/log/fail2ban.log
# Option: syslog-target
# Notes.: where to find syslog facility if logtarget SYSLOG.
# Values: SOCKET HOST HOST:PORT Default: /dev/log
#
syslog-target = /dev/log
# Option: syslog-facility
# Notes.: which syslog facility to use if logtarget SYSLOG.
# Values: NUM Default: 1
#
syslog-facility = 1
# Option: pidlock
# Notes.: path of the PID lock file (must be able to write to file).
# Values: FILE Default: /var/run/fail2ban.pid
#
pidlock = /var/run/fail2ban.pid
# Option: maxfailures
# Notes.: number of failures before IP gets banned.
# Values: NUM Default: 5
#
maxfailures = 5
# Option: bantime
# Notes.: number of seconds an IP will be banned.
# Values: NUM Default: 600
#
bantime = 600
# Option: findtime
# Notes.: lifetime in seconds of a "failed" log entry.
# Values: NUM Default: 600
#
findtime = 600
# Option: ignoreip
# Notes.: space separated list of IP's to be ignored by fail2ban.
# You can use CIDR mask in order to specify a range.
# Example: ignoreip = 192.168.0.1/24 123.45.235.65
# Values: IP Default:
#
ignoreip =
# Option: cmdstart
# Notes.: command executed once at the start of Fail2Ban
# Values: CMD Default:
#
cmdstart =
# Option: cmdend
# Notes.: command executed once at the end of Fail2Ban.
# Values: CMD Default:
#
cmdend =
# Option: polltime
# Notes.: number of seconds fail2ban sleeps between iterations.
# Values: NUM Default: 1
#
polltime = 1
# Option: reinittime
# Notes.: minimal number of seconds between the re-initialization of
# firewalls due to external changes in their rules (see fwcheck)
# Values: NUM Default: 100
#
reinittime = 10
# Option: maxreinits
# Notes.: maximal number of re-initialization of firewalls due to external
# changes. -1 stays for infinite, so only reinittime is of importance
# Values: NUM Default: -1
#
maxreinits = -1
#
# NOTE: Interpolations
#
# fwstart, as well as fwend, fwcheck, fwban, fwunban, ise interpolations
# so %(__name__)s will be substituted by a name of each section
# (unless the option is overriden in a section).
# If you are going to use interpolations in your setup, please make
# sure that you specified options port and protocol (which also has
# an option in DEFAULT)
#
# Option: protocol
# Notes.: internally used by config reader for interpolations.
# Values: [ tcp | udp | icmp | all ] Default: tcp
#
protocol = tcp
# Option: fwstart
# Notes.: command executed once at the start of Fail2Ban.
# Values: CMD Default:
#
fwstart = iptables -N fail2ban-%(__name__)s
iptables -A fail2ban-%(__name__)s -j RETURN
iptables -I INPUT -p %(protocol)s --dport %(port)s -j fail2ban-%(__name__)s
# Option: fwend
# Notes.: command executed once at the end of Fail2Ban
# Values: CMD Default:
#
fwend = iptables -D INPUT -p %(protocol)s --dport %(port)s -j fail2ban-%(__name__)s
iptables -F fail2ban-%(__name__)s
iptables -X fail2ban-%(__name__)s
# Option: fwcheck
# Notes.: command executed once before each fwban command
# Values: CMD Default:
#
fwcheck = iptables -L INPUT | grep -q fail2ban-%(__name__)s
# Option: fwban
# Notes.: command executed when banning an IP. Take care that the
# command is executed with Fail2Ban user rights.
# Tags: <ip> IP address
# <failures> number of failures
# <failtime> unix timestamp of the last failure
# <bantime> unix timestamp of the ban time
# Values: CMD
# Default: iptables -I INPUT 1 -s <ip> -j DROP
#
fwban = iptables -I fail2ban-%(__name__)s 1 -s <ip> -j DROP
# Option: fwunban
# Notes.: command executed when unbanning an IP. Take care that the
# command is executed with Fail2Ban user rights.
# Tags: <ip> IP address
# <bantime> unix timestamp of the ban time
# <unbantime> unix timestamp of the unban time
# Values: CMD
# Default: iptables -D INPUT -s <ip> -j DROP
#
fwunban = iptables -D fail2ban-%(__name__)s -s <ip> -j DROP
[MAIL]
# Option: enabled
# Notes.: enable mail notification when banning an IP address.
# Values: [true | false] Default: false
#
enabled = false
# Option: host
# Notes.: host running the mail server.
# Values: STR Default: localhost
#
host = localhost
# Option: port
# Notes.: port of the mail server.
# Values: INT Default: 25
#
port = 25
# Option: from
# Notes.: e-mail address of the sender.
# Values: MAIL Default: fail2ban
#
from = fail2ban@localhost
# Option: to
# Notes.: e-mail addresses of the receiver. Addresses are space
# separated.
# Values: MAIL Default: root
#
to = root@localhost
# Option: localtime
# Notes.: report local time (including timezone) or GMT
# Values: [true | false] Default: false
#
localtime = true
# Option: subject
# Notes.: subject of the e-mail.
# Tags: <section> active section (eg ssh, apache, etc)
# <ip> IP address
# <failures> number of failures
# <failtime> unix timestamp of the last failure
# Values: TEXT Default: [Fail2Ban] <section>: Banned <ip>
#
subject = [Fail2Ban] <section>: Banned <ip>
# Option: message
# Notes.: message of the e-mail.
# Tags: <section> active section (eg ssh, apache, etc)
# <ip> IP address
# <failures> number of failures
# <failtime> unix timestamp of the last failure
# <br> new line
# Values: TEXT Default:
#
message = Hi,<br>
The IP <ip> has just been banned by Fail2Ban after
<failures> attempts against <section>.<br>
Regards,<br>
Fail2Ban
# You can define a new section for each log file to check for
# password failure. Each section has to define the following
# options: logfile, fwban, fwunban, timeregex, timepattern,
# failregex.
[Apache]
# Option: enabled
# Notes.: enable monitoring for this section.
# Values: [true | false] Default: false
#
enabled = false
# Option: port
# Notes.: specifies port to monitor
# Values: [ NUM | STRING ] Default:
#
port = http
# Option: logfile
# Notes.: logfile to monitor.
# Values: FILE Default: /var/log/apache/error.log
#
logfile = /var/log/apache/error.log
# Option: timeregex
# Notes.: regex to match timestamp in Apache error logfile.
# Values: [Wed Jan 05 15:08:01 2005]
# Default: \S{3} \S{3} \d{2} \d{2}:\d{2}:\d{2} \d{4}
#
timeregex = \S{3} \S{3} \d{2} \d{2}:\d{2}:\d{2} \d{4}
# Option: timepattern
# Notes.: format used in "timeregex" fields definition. Note that '%' must be
# escaped with '%' (see http://rgruet.free.fr/PQR2.3.html#timeModule)
# Values: TEXT Default: %%a %%b %%d %%H:%%M:%%S %%Y
#
timepattern = %%a %%b %%d %%H:%%M:%%S %%Y
# Option: failregex
# Notes.: regex to match the password failure messages in the logfile.
# Values: TEXT Default: [[]client (?P<host>\S*)[]] user .*(?:: authentication failure|not found)
#
failregex = [[]client (?P<host>\S*)[]] user .*(?:: authentication failure|not found)
[ApacheAttacks]
# Option: enabled
# Notes.: enable monitoring for this section.
# Values: [true | false] Default: false
#
enabled = false
# Option: port
# Notes.: specifies port to monitor
# Values: [ NUM | STRING ] Default:
#
port = http
# Option: logfile
# Notes.: logfile to monitor.
# Values: FILE Default: /var/log/apache/access.log
#
logfile = /var/log/apache/access.log
# Option: maxfailures
# Notes.: number of failures before IP gets banned.
# Values: NUM Default: 5
#
maxfailures = 2
# Option: timeregex
# Notes.: regex to match timestamp in Apache access logfile.
# Values: [19/Feb/2006:08:38:18]
# Default: \d{2}/\S{3}/\d{4}:\d{2}:\d{2}:\d{2}
#
timeregex = \d{2}/\S{3}/\d{4}:\d{2}:\d{2}:\d{2}
# Option: timepattern
# Notes.: format used in "timeregex" fields definition. Note that '%' must be
# escaped with '%' (see http://rgruet.free.fr/PQR2.3.html#timeModule)
# Values: TEXT Default: %%d/%%b/%%Y:%%H:%%M:%%S
#
timepattern = %%d/%%b/%%Y:%%H:%%M:%%S
# Option: failregex
# Notes.: regex to match the password failure messages in the logfile.
# Values: TEXT Default: [[]client (?P<host>\S*)[]] user .*(?:: authentication failure|not found)
#
failregex = ^(?P<host>\S*) -.*"GET .*(?:awstats\.pl\?configdir=|index2\.php\?_REQUEST\[option\].*)\|echo.*
[SSH]
# Option: enabled
# Notes.: enable monitoring for this section.
# Values: [true | false] Default: true
#
enabled = true
# Option: port
# Notes.: specifies port to monitor
# Values: [ NUM | STRING ] Default:
#
port = ssh
# Option: logfile
# Notes.: logfile to monitor.
# Values: FILE Default: /var/log/auth.log
#
logfile = /var/log/auth.log
# Option: timeregex
# Notes.: regex to match timestamp in SSH logfile.
# Values: [Mar 7 17:53:28]
# Default: \S{3}\s{1,2}\d{1,2} \d{2}:\d{2}:\d{2}
#
timeregex = \S{3}\s{1,2}\d{1,2} \d{2}:\d{2}:\d{2}
# Option: timepattern
# Notes.: format used in "timeregex" fields definition. Note that '%' must be
# escaped with '%' (see http://rgruet.free.fr/PQR2.3.html#timeModule)
# Values: TEXT Default: %%b %%d %%H:%%M:%%S
#
timepattern = %%b %%d %%H:%%M:%%S
# Option: failregex
# Notes.: regex to match the password failures messages in the logfile.
# Values: TEXT Default: (?:Authentication failure|Failed (?:keyboard-interactive/pam|password)) for(?: illegal user)? .* from (?:::f{4,6}:)?(?P<host>\S*)
#
failregex = : (?:(?:Authentication failure|Failed [-/\w+]+) for(?: [iI](?:llegal|nvalid) user)?|[Ii](?:llegal|nvalid) user|ROOT LOGIN REFUSED) .*(?: from|FROM) (?:::f{4,6}:)?(?P<host>\S*)