Fail2ban regle ...

cat jail.conf

# Fail2Ban configuration file.
#
# This file was composed for Debian systems from the original one
#  provided now under /usr/share/doc/fail2ban/examples/jail.conf
#  for additional examples.
#
# To avoid merges during upgrades DO NOT MODIFY THIS FILE
# and rather provide your changes in /etc/fail2ban/jail.local
#
# Author: Yaroslav O. Halchenko <debian@onerussian.com>
#
# $Revision: 281 $
#

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

[DEFAULT]

# "ignoreip" can be an IP address, a CIDR mask or a DNS host
ignoreip = 127.0.0.1
bantime  = 600
maxretry = 3

# "backend" specifies the backend used to get files modification. Available
# options are "gamin", "polling" and "auto".
# yoh: For some reason Debian shipped python-gamin didn't work as expected
#      This issue left ToDo, so polling is default backend for now
backend = polling

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

# Default action to take: ban only
action = iptables[name=%(__name__)s, port=%(port)s]

# Following actions can be chosen as an alternatives to the above action.
# To activate, just copy/paste+uncomment chosen 2 (excluding comments) lines
# into jail.local

# Default action to take: ban & send an e-mail with whois report
# to the destemail.
# action = iptables[name=%(__name__)s, port=%(port)s]
#          mail-whois[name=%(__name__)s, dest=%(destemail)s]

# Default action to take: ban & send an e-mail with whois report
# and relevant log lines to the destemail.
# action = iptables[name=%(__name__)s, port=%(port)s]
#          mail-whois-lines[name=%(__name__)s, dest=%(destemail)s, logpath=%(logpath)s]

# Next jails corresponds to the standard configuration in Fail2ban 0.6
# which was shipped in Debian. Please enable any defined here jail by including
#
# [SECTION_NAME]
# enabled = true
#
# in /etc/fail2ban/jail.local.
#

[ssh]

enabled = true
port    = ssh
filter  = sshd
logpath  = /var/logauth.log
maxretry = 6

#
# HTTP servers
#

[apache]

enabled = false
port    = http
filter  = apache-auth
logpath = /var/log/apache*/*access.log
maxretry = 6


[apache-noscript]

enabled = false
port    = http
filter  = apache-noscript
logpath = /var/log/apache*/*error.log
maxretry = 6

#
# FTP servers
#

[vsftpd]

enabled  = false
port     = ftp
filter   = vsftpd
logpath  = /var/log/auth.log
maxretry = 6


[proftpd]

enabled  = false
port     = ftp
filter   = proftpd
logpath  = /var/log/proftpd/proftpd.log
maxretry = 6


[wuftpd]

enabled  = false
port     = ftp
filter   = wuftpd
logpath  = /var/log/auth.log
maxretry = 6


#
# Mail servers
#

[postfix]

enabled  = false
port     = smtp
filter   = postfix
logpath  = /var/log/postfix.log


[couriersmtp]

enabled  = false
port     = smtp
filter   = couriersmtp
logpath  = /var/log/mail.log


[sasl]

enabled  = false
port     = smtp
filter   = sasl
logpath  = /var/log/mail.log

cat jail.local

[ssh-iptables]
enabled  = true
filter   = sshd
action   = iptables[name=SSH, port=ssh, protocol=tcp]
logpath  = /var/logauth.log
maxretry = 5
findtime = 600

cat filter.d/sshd.conf


# Fail2Ban configuration file
#
# Author: Cyril Jaquier
#
# $Revision: 471 $
#

[Definition]

# Option:  failregex
# Notes.:  regex to match the password failures messages in the logfile. The
#          host must be matched by a group named "host". The tag "<HOST>" can
#          be used for standard IP/hostname matching.
# Values:  TEXT
#
failregex = (?:(?:Authentication failure|Failed [-/\w+]+) for(?: [iI](?:llegal|nvalid) user)?|[Ii](?:llegal|nvalid) user|ROOT LOGIN REFUSED) .*(?: from|FROM) <HOST>(?: port \d*)?(?: ssh\d*)?\s*$

# Option:  ignoreregex
# Notes.:  regex to ignore. If this regex matches, the line is ignored.
# Values:  TEXT
#
ignoreregex =

cat filter.d/sshd.local

[definition]

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

# Option:  ignoreregex
# Notes.:  regex to ignore. If this regex matches, the line is ignored.
# Values:  TEXT
#
ignoreregex =

cat action.d/iptables.conf

# Fail2Ban configuration file
#
# Author: Cyril Jaquier
#
# $Revision: 455 $
#

[Definition]

# Option:  fwstart
# Notes.:  command executed once at the start of Fail2Ban.
# Values:  CMD
#
actionstart = iptables -N fail2ban-<name>
              iptables -A fail2ban-<name> -j RETURN
              iptables -I INPUT -p <protocol> --dport <port> -j fail2ban-<name>

# Option:  fwend
# Notes.:  command executed once at the end of Fail2Ban
# Values:  CMD
#
actionstop = iptables -D INPUT -p <protocol> --dport <port> -j fail2ban-<name>
             iptables -F fail2ban-<name>
             iptables -X fail2ban-<name>

# Option:  fwcheck
# Notes.:  command executed once before each fwban command
# Values:  CMD
#
actioncheck = iptables -n -L INPUT | grep -q fail2ban-<name>

# 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
#          <time>  unix timestamp of the ban time
# Values:  CMD
#
actionban = iptables -I fail2ban-<name> 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
#          <failures>  number of failures
#          <time>  unix timestamp of the ban time
# Values:  CMD
#
actionunban = iptables -D fail2ban-<name> -s <ip> -j DROP

[Init]

# Defaut name of the chain
#
name = default

# Option:  port
# Notes.:  specifies port to monitor
# Values:  [ NUM | STRING ]  Default:
#
port = ssh

# Option:  protocol
# Notes.:  internally used by config reader for interpolations.
# Values:  [ tcp | udp | icmp | all ] Default: tcp
#
protocol = tcp

Success, the following data were found:
Date: Thu Mar 08 10:26:05 2012
IP  : 1.2.3.4

Date template hits:
1 hit: Month Day Hour:Minute:Second
0 hit: Weekday Month Day Hour:Minute:Second Year
0 hit: Year/Month/Day Hour:Minute:Second
0 hit: Day/Month/Year:Hour:Minute:Second
0 hit: TAI64N
0 hit: Epoch

Benchmark. Executing 1000...
Performance
Avg: 0.07336878776550293 ms
Max: 0.13804435729980469 ms (Run 246)
Min: 0.068902969360351562 ms (Run 990)