Na minha tentativa de bloquear tentativas de login em phpMyAdmin com fail2ban , criei um script que registra as tentativas malsucedidas em um arquivo: /var/log/phpmyadmin_auth.log
Log personalizado
O formato do arquivo /var/log/phpmyadmin_auth.log é:
phpMyadmin login failed with username: root; ip: 192.168.1.50; url: http://somedomain.com/phpmyadmin/index.php
phpMyadmin login failed with username: ; ip: 192.168.1.50; url: http://192.168.1.48/phpmyadmin/index.php
Filtro personalizado
[Definition]
# Count all bans in the logfile
failregex = phpMyadmin login failed with username: .*; ip: <HOST>;
phpMyAdmin jail
[phpmyadmin]
enabled = true
port = http,https
filter = phpmyadmin
action = sendmail-whois[name=HTTP]
logpath = /var/log/phpmyadmin_auth.log
maxretry = 6
O fail2ban log contém:
2012-10-04 10:52:22,756 fail2ban.server : INFO Stopping all jails
2012-10-04 10:52:23,091 fail2ban.jail : INFO Jail 'ssh-iptables' stopped
2012-10-04 10:52:23,866 fail2ban.jail : INFO Jail 'fail2ban' stopped
2012-10-04 10:52:23,994 fail2ban.jail : INFO Jail 'ssh' stopped
2012-10-04 10:52:23,994 fail2ban.server : INFO Exiting Fail2ban
2012-10-04 10:52:24,253 fail2ban.server : INFO Changed logging target to /var/log/fail2ban.log for Fail2ban v0.8.6
2012-10-04 10:52:24,253 fail2ban.jail : INFO Creating new jail 'ssh'
2012-10-04 10:52:24,253 fail2ban.jail : INFO Jail 'ssh' uses poller
2012-10-04 10:52:24,260 fail2ban.filter : INFO Added logfile = /var/log/auth.log
2012-10-04 10:52:24,260 fail2ban.filter : INFO Set maxRetry = 6
2012-10-04 10:52:24,261 fail2ban.filter : INFO Set findtime = 600
2012-10-04 10:52:24,261 fail2ban.actions: INFO Set banTime = 600
2012-10-04 10:52:24,279 fail2ban.jail : INFO Creating new jail 'ssh-iptables'
2012-10-04 10:52:24,279 fail2ban.jail : INFO Jail 'ssh-iptables' uses poller
2012-10-04 10:52:24,279 fail2ban.filter : INFO Added logfile = /var/log/auth.log
2012-10-04 10:52:24,280 fail2ban.filter : INFO Set maxRetry = 5
2012-10-04 10:52:24,280 fail2ban.filter : INFO Set findtime = 600
2012-10-04 10:52:24,280 fail2ban.actions: INFO Set banTime = 600
2012-10-04 10:52:24,287 fail2ban.jail : INFO Creating new jail 'fail2ban'
2012-10-04 10:52:24,287 fail2ban.jail : INFO Jail 'fail2ban' uses poller
2012-10-04 10:52:24,287 fail2ban.filter : INFO Added logfile = /var/log/fail2ban.log
2012-10-04 10:52:24,287 fail2ban.filter : INFO Set maxRetry = 3
2012-10-04 10:52:24,288 fail2ban.filter : INFO Set findtime = 604800
2012-10-04 10:52:24,288 fail2ban.actions: INFO Set banTime = 604800
2012-10-04 10:52:24,292 fail2ban.jail : INFO Jail 'ssh' started
2012-10-04 10:52:24,293 fail2ban.jail : INFO Jail 'ssh-iptables' started
2012-10-04 10:52:24,297 fail2ban.jail : INFO Jail 'fail2ban' started
Quando eu emito:
sudo service fail2ban restart
fail2ban envia um e-mail para eu dizer que ssh foi reiniciado, mas não recebo nenhum e-mail sobre minha phpmyadmin jail. Logins repetidos com falha para phpMyAdmin não fazem com que um email seja enviado.
Eu perdi alguma configuração crítica? A expressão regular do meu filtro está errada?
Atualização: alterações adicionadas da instalação padrão
Começando com uma instalação limpa de fail2ban :
cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local
Altere o endereço de e-mail para o meu, ação para:
action = %(action_mwl)s
Anexe o seguinte a jail.local
[phpmyadmin]
enabled = true
port = http,https
filter = phpmyadmin
action = sendmail-whois[name=HTTP]
logpath = /var/log/phpmyadmin_auth.log
maxretry = 4
Adicione o seguinte a /etc/fail2ban/filter.d/phpmyadmin.conf
# phpmyadmin configuration file
#
# Author: Michael Robinson
#
[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 and is only an alias for
# (?:::f{4,6}:)?(?P<host>\S+)
# Values: TEXT
#
# Count all bans in the logfile
failregex = phpMyadmin login failed with username: .*; ip: <HOST>;
# Option: ignoreregex
# Notes.: regex to ignore. If this regex matches, the line is ignored.
# Values: TEXT
#
# Ignore our own bans, to keep our counts exact.
# In your config, name your jail 'fail2ban', or change this line!
ignoreregex =
Reinicie o fail2ban
sudo service fail2ban restart
PS: eu gosto de ovos