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# Fail2Ban jail specifications file
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#
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# WARNING: heavily refactored in 0.9.0 release. Please review and
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# customize settings for your setup.
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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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# Changes: in most of the cases you should not modify this
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# file, but provide customizations in jail.local file,
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# or separate .conf files under jail.d/ directory, e.g.:
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#
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# [DEFAULT]
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# bantime = 3600
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#
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# [sshd]
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# enabled = true
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#
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# See jail.conf(5) man page for more information
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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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#
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# MISCELLANEOUS OPTIONS
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#
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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" is the number of failures before a host get banned.
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maxretry = 5
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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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# "logencoding" specifies the encoding of the log files handled by the jail
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# This is used to decode the lines from the log file.
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# Typical examples: "ascii", "utf-8"
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#
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# auto: will use the system locale setting
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logencoding = auto
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# "enabled" enables the jails.
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# By default all (but sshd) jails are disabled.
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# It is unlikely that the default value should ever be changed.
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# Enable only relevant to your setup jails in your .local or jail.d/*.conf
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#
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# true: jail will be enabled and log files will get monitored for changes
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# false: jail is not enabled
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enabled = false
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# "filter" defines the filter to use by the jail.
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# By default jails have names matching their filter name
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#
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filter = %(__name__)s
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#
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# ACTIONS
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#
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# Some options used for actions
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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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# E-mail action. Since 0.8.1 Fail2Ban uses sendmail MTA for the
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# mailing. Change mta configuration parameter to mail if you want to
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# 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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# Ports to be banned
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# Usually should be overridden in a particular jail
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port = 0:65535
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#
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# Action shortcuts. To be used to define action parameter
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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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# 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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#
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# SSH servers
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#
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[sshd]
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enabled = true
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port = ssh
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logpath = /var/log/auth.log
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/var/log/sshd.log
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[sshd-ddos]
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port = ssh
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logpath = /var/log/auth.log
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/var/log/sshd.log
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[dropbear]
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port = ssh
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filter = sshd
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logpath = /var/log/dropbear
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# Generic filter for PAM. Has to be used with action which bans all
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# ports such as iptables-allports, shorewall
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[pam-generic]
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# pam-generic filter can be customized to monitor specific subset of 'tty's
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banaction = iptables-allports
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logpath = /var/log/auth.log
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[xinetd-fail]
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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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# .. custom jails
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# Here we use TCP-Wrappers instead of Netfilter/Iptables. "ignoreregex" is
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# used to avoid banning the user "myuser".
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[sshd-tcpwrapper]
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filter = sshd
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action = hostsdeny
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sendmail-whois[name=SSH, dest=you@example.com]
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ignoreregex = for myuser from
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logpath = /var/log/sshd.log
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# Here we use blackhole routes for not requiring any additional kernel support
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# to store large volumes of banned IPs
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[sshd-route]
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filter = sshd
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action = route
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logpath = /var/log/sshd.log
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# Here we use a combination of Netfilter/Iptables and IPsets
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# for storing large volumes of banned IPs
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#
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# IPset comes in two versions. See ipset -V for which one to use
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# requires the ipset package and kernel support.
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[sshd-iptables-ipset4]
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filter = sshd
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action = iptables-ipset-proto4[name=SSH, port=ssh, protocol=tcp]
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logpath = /var/log/sshd.log
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[sshd-iptables-ipset6]
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filter = sshd
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action = iptables-ipset-proto6[name=SSH, port=ssh, protocol=tcp, bantime=600]
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logpath = /var/log/sshd.log
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# This jail uses ipfw, the standard firewall on FreeBSD. The "ignoreip"
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# option is overridden in this jail. Moreover, the action "mail-whois" defines
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# the variable "name" which contains a comma using "". The characters '' are
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# valid too.
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[sshd-ipfw]
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filter = sshd
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action = ipfw[localhost=192.168.0.1]
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sendmail-whois[name="SSH,IPFW", dest=you@example.com]
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logpath = /var/log/auth.log
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ignoreip = 168.192.0.1
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#
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# HTTP servers
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#
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[apache-auth]
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port = http,https
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logpath = /var/log/apache*/*error.log
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# Ban hosts which agent identifies spammer robots crawling the web
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# for email addresses. The mail outputs are buffered.
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[apache-badbots]
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port = http,https
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logpath = /var/log/apache*/*access.log
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/var/www/*/logs/access_log
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bantime = 172800
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maxretry = 1
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[apache-noscript]
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port = http,https
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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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port = http,https
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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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port = http,https
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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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port = http,https
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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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port = http,https
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logpath = /var/log/lighttpd/error.log
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[roundcube-auth]
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port = http,https
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logpath = /var/log/roundcube/userlogins
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[sogo-auth]
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port = http,https
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# without proxy this would be:
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# port = 20000
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logpath = /var/log/sogo/sogo.log
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# ... custom jails
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[apache-tcpwrapper]
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filter = apache-auth
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action = hostsdeny
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logpath = /var/log/apache*/*error.log
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maxretry = 6
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#
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# FTP servers
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#
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[proftpd]
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port = ftp,ftp-data,ftps,ftps-data
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logpath = /var/log/proftpd/proftpd.log
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[pure-ftpd]
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port = ftp,ftp-data,ftps,ftps-data
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logpath = /var/log/auth.log
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maxretry = 6
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[vsftpd]
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port = ftp,ftp-data,ftps,ftps-data
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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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# Do not ban anybody. Just report information about the remote host.
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# A notification is sent at most every 600 seconds (bantime).
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[vsftpd-notification]
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filter = vsftpd
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action = sendmail-whois[name=VSFTPD, dest=you@example.com]
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logpath = /var/log/vsftpd.log
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maxretry = 5
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bantime = 1800
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[wuftpd]
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port = ftp,ftp-data,ftps,ftps-data
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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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[courier-smtp]
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port = smtp,ssmtp
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logpath = /var/log/mail.log
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[postfix]
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port = smtp,ssmtp
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logpath = /var/log/mail.log
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# The hosts.deny path can be defined with the "file" argument if it is
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# not in /etc.
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[postfix-tcpwrapper]
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filter = postfix
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action = hostsdeny[file=/not/a/standard/path/hosts.deny]
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sendmail[name=Postfix, dest=you@example.com]
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logpath = /var/log/postfix.log
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bantime = 300
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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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[courier-auth]
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port = smtp,ssmtp,imap2,imap3,imaps,pop3,pop3s
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logpath = /var/log/mail.log
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[sasl]
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port = smtp,ssmtp,imap2,imap3,imaps,pop3,pop3s
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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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port = smtp,ssmtp,imap2,imap3,imaps,pop3,pop3s
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logpath = /var/log/mail.log
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#
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# DNS servers
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#
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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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# This jail blocks UDP traffic for DNS requests.
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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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#
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# [named-refused-udp]
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#
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# filter = named-refused
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# port = domain,953
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# protocol = udp
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# logpath = /var/log/named/security.log
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# ignoreip = 168.192.0.1
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# This jail blocks TCP traffic for DNS requests.
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[named-refused]
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filter = named-refused
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port = domain,953
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logpath = /var/log/named/security.log
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ignoreip = 168.192.0.1
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#
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# Miscelaneous
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#
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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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|
|
|
|
filter = asterisk
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|
|
port = 5060,5061
|
|
|
protocol = tcp
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|
|
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
|
