mirror of https://github.com/fail2ban/fail2ban
408 lines
10 KiB
Plaintext
408 lines
10 KiB
Plaintext
# Fail2Ban configuration file.
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#
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# This file was composed for Debian systems from the original one
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# provided now under /usr/share/doc/fail2ban/examples/jail.conf
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# for additional examples.
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#
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# Comments: use '#' for comment lines and ';' for inline comments
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#
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# To avoid merges during upgrades DO NOT MODIFY THIS FILE
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# and rather provide your changes in /etc/fail2ban/jail.local
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#
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# The DEFAULT allows a global definition of the options. They can be overridden
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# in each jail afterwards.
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[DEFAULT]
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# "ignoreip" can be an IP address, a CIDR mask or a DNS host. Fail2ban will not
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# ban a host which matches an address in this list. Several addresses can be
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# defined using space separator.
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ignoreip = 127.0.0.1/8
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# "bantime" is the number of seconds that a host is banned.
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bantime = 600
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# A host is banned if it has generated "maxretry" during the last "findtime"
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# seconds.
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findtime = 600
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maxretry = 3
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# "backend" specifies the backend used to get files modification.
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# Available options are "pyinotify", "gamin", "polling" and "auto".
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# This option can be overridden in each jail as well.
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#
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# pyinotify: requires pyinotify (a file alteration monitor) to be installed.
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# If pyinotify is not installed, Fail2ban will use auto.
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# gamin: requires Gamin (a file alteration monitor) to be installed.
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# If Gamin is not installed, Fail2ban will use auto.
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# polling: uses a polling algorithm which does not require external libraries.
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# auto: will try to use the following backends, in order:
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# pyinotify, gamin, polling.
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backend = auto
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# "usedns" specifies if jails should trust hostnames in logs,
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# warn when reverse DNS lookups are performed, or ignore all hostnames in logs
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#
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# yes: if a hostname is encountered, a reverse DNS lookup will be performed.
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# warn: if a hostname is encountered, a reverse DNS lookup will be performed,
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# but it will be logged as a warning.
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# no: if a hostname is encountered, will not be used for banning,
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# but it will be logged as info.
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usedns = warn
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#
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# Destination email address used solely for the interpolations in
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# jail.{conf,local} configuration files.
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destemail = root@localhost
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#
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# ACTIONS
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#
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# Default banning action (e.g. iptables, iptables-new,
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# iptables-multiport, shorewall, etc) It is used to define
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# action_* variables. Can be overridden globally or per
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# section within jail.local file
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banaction = iptables-multiport
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# email action. Since 0.8.1 upstream fail2ban uses sendmail
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# MTA for the mailing. Change mta configuration parameter to mail
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# if you want to revert to conventional 'mail'.
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mta = sendmail
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# Default protocol
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protocol = tcp
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# Specify chain where jumps would need to be added in iptables-* actions
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chain = INPUT
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#
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# Action shortcuts. To be used to define action parameter
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# The simplest action to take: ban only
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action_ = %(banaction)s[name=%(__name__)s, port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"]
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# ban & send an e-mail with whois report to the destemail.
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action_mw = %(banaction)s[name=%(__name__)s, port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"]
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%(mta)s-whois[name=%(__name__)s, dest="%(destemail)s", protocol="%(protocol)s", chain="%(chain)s"]
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# ban & send an e-mail with whois report and relevant log lines
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# to the destemail.
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action_mwl = %(banaction)s[name=%(__name__)s, port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"]
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%(mta)s-whois-lines[name=%(__name__)s, dest="%(destemail)s", logpath=%(logpath)s, chain="%(chain)s"]
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# Choose default action. To change, just override value of 'action' with the
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# interpolation to the chosen action shortcut (e.g. action_mw, action_mwl, etc) in jail.local
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# globally (section [DEFAULT]) or per specific section
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action = %(action_)s
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#
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# JAILS
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#
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# Next jails corresponds to the standard configuration in Fail2ban 0.6 which
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# was shipped in Debian. Enable any defined here jail by including
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#
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# [SECTION_NAME]
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# enabled = true
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#
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# in /etc/fail2ban/jail.local.
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#
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# Optionally you may override any other parameter (e.g. banaction,
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# action, port, logpath, etc) in that section within jail.local
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[ssh]
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enabled = true
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port = ssh
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filter = sshd
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logpath = /var/log/auth.log
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maxretry = 6
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[dropbear]
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enabled = false
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port = ssh
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filter = sshd
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logpath = /var/log/dropbear
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maxretry = 6
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# Generic filter for pam. Has to be used with action which bans all ports
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# such as iptables-allports, shorewall
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[pam-generic]
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enabled = false
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# pam-generic filter can be customized to monitor specific subset of 'tty's
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filter = pam-generic
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# port actually must be irrelevant but lets leave it all for some possible uses
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port = all
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banaction = iptables-allports
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port = anyport
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logpath = /var/log/auth.log
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maxretry = 6
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[xinetd-fail]
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enabled = false
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filter = xinetd-fail
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port = all
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banaction = iptables-multiport-log
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logpath = /var/log/daemon.log
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maxretry = 2
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[ssh-ddos]
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enabled = false
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port = ssh
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filter = sshd-ddos
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logpath = /var/log/auth.log
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maxretry = 6
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#
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# HTTP servers
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#
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[apache]
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enabled = false
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port = http,https
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filter = apache-auth
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logpath = /var/log/apache*/*error.log
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maxretry = 6
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# default action is now multiport, so apache-multiport jail was left
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# for compatibility with previous (<0.7.6-2) releases
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[apache-multiport]
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enabled = false
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port = http,https
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filter = apache-auth
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logpath = /var/log/apache*/*error.log
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maxretry = 6
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[apache-noscript]
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enabled = false
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port = http,https
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filter = apache-noscript
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logpath = /var/log/apache*/*error.log
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maxretry = 6
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[apache-overflows]
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enabled = false
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port = http,https
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filter = apache-overflows
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logpath = /var/log/apache*/*error.log
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maxretry = 2
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# Ban attackers that try to use PHP's URL-fopen() functionality
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# through GET/POST variables. - Experimental, with more than a year
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# of usage in production environments.
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[php-url-fopen]
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enabled = false
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port = http,https
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filter = php-url-fopen
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logpath = /var/www/*/logs/access_log
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# A simple PHP-fastcgi jail which works with lighttpd.
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# If you run a lighttpd server, then you probably will
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# find these kinds of messages in your error_log:
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# ALERT – tried to register forbidden variable ‘GLOBALS’
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# through GET variables (attacker '1.2.3.4', file '/var/www/default/htdocs/index.php')
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[lighttpd-fastcgi]
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enabled = false
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port = http,https
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filter = lighttpd-fastcgi
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logpath = /var/log/lighttpd/error.log
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# Same as above for mod_auth
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# It catches wrong authentifications
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[lighttpd-auth]
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enabled = false
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port = http,https
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filter = lighttpd-auth
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logpath = /var/log/lighttpd/error.log
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#
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# FTP servers
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#
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[vsftpd]
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enabled = false
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port = ftp,ftp-data,ftps,ftps-data
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filter = vsftpd
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logpath = /var/log/vsftpd.log
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# or overwrite it in jails.local to be
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# logpath = /var/log/auth.log
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# if you want to rely on PAM failed login attempts
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# vsftpd's failregex should match both of those formats
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maxretry = 6
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[proftpd]
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enabled = false
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port = ftp,ftp-data,ftps,ftps-data
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filter = proftpd
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logpath = /var/log/proftpd/proftpd.log
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maxretry = 6
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[pure-ftpd]
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enabled = false
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port = ftp,ftp-data,ftps,ftps-data
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filter = pure-ftpd
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logpath = /var/log/auth.log
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maxretry = 6
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[wuftpd]
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enabled = false
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port = ftp,ftp-data,ftps,ftps-data
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filter = wuftpd
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logpath = /var/log/syslog
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maxretry = 6
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#
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# Mail servers
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#
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[postfix]
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enabled = false
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port = smtp,ssmtp
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filter = postfix
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logpath = /var/log/mail.log
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[couriersmtp]
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enabled = false
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port = smtp,ssmtp
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filter = couriersmtp
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logpath = /var/log/mail.log
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#
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# Mail servers authenticators: might be used for smtp,ftp,imap servers, so
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# all relevant ports get banned
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#
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[courierauth]
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enabled = false
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port = smtp,ssmtp,imap2,imap3,imaps,pop3,pop3s
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filter = courierlogin
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logpath = /var/log/mail.log
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[sasl]
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enabled = false
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port = smtp,ssmtp,imap2,imap3,imaps,pop3,pop3s
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filter = sasl
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# You might consider monitoring /var/log/mail.warn instead if you are
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# running postfix since it would provide the same log lines at the
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# "warn" level but overall at the smaller filesize.
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logpath = /var/log/mail.log
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[dovecot]
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enabled = false
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port = smtp,ssmtp,imap2,imap3,imaps,pop3,pop3s
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filter = dovecot
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logpath = /var/log/mail.log
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# DNS Servers
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# These jails block attacks against named (bind9). By default, logging is off
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# with bind9 installation. You will need something like this:
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#
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# logging {
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# channel security_file {
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# file "/var/log/named/security.log" versions 3 size 30m;
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# severity dynamic;
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# print-time yes;
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# };
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# category security {
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# security_file;
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# };
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# };
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#
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# in your named.conf to provide proper logging
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# !!! WARNING !!!
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# Since UDP is connection-less protocol, spoofing of IP and imitation
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# of illegal actions is way too simple. Thus enabling of this filter
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# might provide an easy way for implementing a DoS against a chosen
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# victim. See
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# http://nion.modprobe.de/blog/archives/690-fail2ban-+-dns-fail.html
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# Please DO NOT USE this jail unless you know what you are doing.
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#[named-refused-udp]
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#
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#enabled = false
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#port = domain,953
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#protocol = udp
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#filter = named-refused
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#logpath = /var/log/named/security.log
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[named-refused-tcp]
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enabled = false
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port = domain,953
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protocol = tcp
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filter = named-refused
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logpath = /var/log/named/security.log
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# Multiple jails, 1 per protocol, are necessary ATM:
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# see https://github.com/fail2ban/fail2ban/issues/37
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[asterisk-tcp]
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enabled = false
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filter = asterisk
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port = 5060,5061
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protocol = tcp
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logpath = /var/log/asterisk/messages
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[asterisk-udp]
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enabled = false
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filter = asterisk
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port = 5060,5061
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protocol = udp
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logpath = /var/log/asterisk/messages
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# Jail for more extended banning of persistent abusers
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# !!! WARNING !!!
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# Make sure that your loglevel specified in fail2ban.conf/.local
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# is not at DEBUG level -- which might then cause fail2ban to fall into
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# an infinite loop constantly feeding itself with non-informative lines
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[recidive]
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enabled = false
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filter = recidive
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logpath = /var/log/fail2ban.log
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action = iptables-allports[name=recidive]
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sendmail-whois-lines[name=recidive, logpath=/var/log/fail2ban.log]
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bantime = 604800 ; 1 week
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findtime = 86400 ; 1 day
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maxretry = 5
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