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# # WARNING: heavily refactored in 0.9.0 release. Please review and # customize settings for your setup. # # Changes: in most of the cases you should not modify this # file, but provide customizations in jail.local file, # or separate .conf files under jail.d/ directory, e.g.: # # HOW TO ACTIVATE JAILS: # # YOU SHOULD NOT MODIFY THIS FILE. # # It will probably be overwritten or improved in a distribution update. # # Provide customizations in a jail.local file or a jail.d/customisation.local. # For example to change the default bantime for all jails and to enable the # ssh-iptables jail the following (uncommented) would appear in the .local file. # See man 5 jail.conf for details. # # [DEFAULT] # bantime = 1h # # [sshd] # enabled = true # # See jail.conf(5) man page for more information # Comments: use '#' for comment lines and ';' (following a space) for inline comments [INCLUDES] #before = paths-distro.conf before = paths-debian.conf # The DEFAULT allows a global definition of the options. They can be overridden # in each jail afterwards. [DEFAULT] # # MISCELLANEOUS OPTIONS # # "bantime.increment" allows to use database for searching of previously banned ip's to increase a # default ban time using special formula, default it is banTime * 1, 2, 4, 8, 16, 32... #bantime.increment = true # "bantime.rndtime" is the max number of seconds using for mixing with random time # to prevent "clever" botnets calculate exact time IP can be unbanned again: #bantime.rndtime = # "bantime.maxtime" is the max number of seconds using the ban time can reach (doesn't grow further) #bantime.maxtime = # "bantime.factor" is a coefficient to calculate exponent growing of the formula or common multiplier, # default value of factor is 1 and with default value of formula, the ban time # grows by 1, 2, 4, 8, 16 ... #bantime.factor = 1 # "bantime.formula" used by default to calculate next value of ban time, default value below, # the same ban time growing will be reached by multipliers 1, 2, 4, 8, 16, 32... #bantime.formula = ban.Time * (1<<(ban.Count if ban.Count<20 else 20)) * banFactor # # more aggressive example of formula has the same values only for factor "2.0 / 2.885385" : #bantime.formula = ban.Time * math.exp(float(ban.Count+1)*banFactor)/math.exp(1*banFactor) # "bantime.multipliers" used to calculate next value of ban time instead of formula, coresponding # previously ban count and given "bantime.factor" (for multipliers default is 1); # following example grows ban time by 1, 2, 4, 8, 16 ... and if last ban count greater as multipliers count, # always used last multiplier (64 in example), for factor '1' and original ban time 600 - 10.6 hours #bantime.multipliers = 1 2 4 8 16 32 64 # following example can be used for small initial ban time (bantime=60) - it grows more aggressive at begin, # for bantime=60 the multipliers are minutes and equal: 1 min, 5 min, 30 min, 1 hour, 5 hour, 12 hour, 1 day, 2 day #bantime.multipliers = 1 5 30 60 300 720 1440 2880 # "bantime.overalljails" (if true) specifies the search of IP in the database will be executed # cross over all jails, if false (dafault), only current jail of the ban IP will be searched #bantime.overalljails = false # -------------------- # "ignoreself" specifies whether the local resp. own IP addresses should be ignored # (default is true). Fail2ban will not ban a host which matches such addresses. #ignoreself = true # "ignoreip" can be a list of IP addresses, CIDR masks or DNS hosts. Fail2ban # will not ban a host which matches an address in this list. Several addresses # can be defined using space (and/or comma) separator. #ignoreip = 127.0.0.1/8 ::1 # External command that will take an tagged arguments to ignore, e.g. <ip>, # and return true if the IP is to be ignored. False otherwise. # # ignorecommand = /path/to/command <ip> ignorecommand = # "bantime" is the number of seconds that a host is banned. bantime = 10m # A host is banned if it has generated "maxretry" during the last "findtime" # seconds. findtime = 10m # "maxretry" is the number of failures before a host get banned. maxretry = 5 # "maxmatches" is the number of matches stored in ticket (resolvable via tag <matches> in actions). maxmatches = %(maxretry)s # "backend" specifies the backend used to get files modification. # Available options are "pyinotify", "gamin", "polling", "systemd" and "auto". # This option can be overridden in each jail as well. # # pyinotify: requires pyinotify (a file alteration monitor) to be installed. # If pyinotify is not installed, Fail2ban will use auto. # gamin: requires Gamin (a file alteration monitor) to be installed. # If Gamin is not installed, Fail2ban will use auto. # polling: uses a polling algorithm which does not require external libraries. # systemd: uses systemd python library to access the systemd journal. # Specifying "logpath" is not valid for this backend. # See "journalmatch" in the jails associated filter config # auto: will try to use the following backends, in order: # pyinotify, gamin, polling. # # Note: if systemd backend is chosen as the default but you enable a jail # for which logs are present only in its own log files, specify some other # backend for that jail (e.g. polling) and provide empty value for # journalmatch. See https://github.com/fail2ban/fail2ban/issues/959#issuecomment-74901200 backend = auto # "usedns" specifies if jails should trust hostnames in logs, # warn when DNS lookups are performed, or ignore all hostnames in logs # # yes: if a hostname is encountered, a DNS lookup will be performed. # warn: if a hostname is encountered, a DNS lookup will be performed, # but it will be logged as a warning. # no: if a hostname is encountered, will not be used for banning, # but it will be logged as info. # raw: use raw value (no hostname), allow use it for no-host filters/actions (example user) usedns = warn # "logencoding" specifies the encoding of the log files handled by the jail # This is used to decode the lines from the log file. # Typical examples: "ascii", "utf-8" # # auto: will use the system locale setting logencoding = auto # "enabled" enables the jails. # By default all jails are disabled, and it should stay this way. # Enable only relevant to your setup jails in your .local or jail.d/*.conf # # true: jail will be enabled and log files will get monitored for changes # false: jail is not enabled enabled = false # "mode" defines the mode of the filter (see corresponding filter implementation for more info). mode = normal # "filter" defines the filter to use by the jail. # By default jails have names matching their filter name # filter = %(__name__)s[mode=%(mode)s] # # ACTIONS # # Some options used for actions # Destination email address used solely for the interpolations in # jail.{conf,local,d/*} configuration files. destemail = root@localhost # Sender email address used solely for some actions sender = root@<fq-hostname> # E-mail action. Since 0.8.1 Fail2Ban uses sendmail MTA for the # mailing. Change mta configuration parameter to mail if you want to # revert to conventional 'mail'. mta = sendmail # Default protocol protocol = tcp # Specify chain where jumps would need to be added in ban-actions expecting parameter chain chain = <known/chain> # Ports to be banned # Usually should be overridden in a particular jail port = 0:65535 # Format of user-agent https://tools.ietf.org/html/rfc7231#section-5.5.3 fail2ban_agent = Fail2Ban/%(fail2ban_version)s # # Action shortcuts. To be used to define action parameter # Default banning action (e.g. iptables, iptables-new, # iptables-multiport, shorewall, etc) It is used to define # action_* variables. Can be overridden globally or per # section within jail.local file banaction = iptables-multiport banaction_allports = iptables-allports # The simplest action to take: ban only action_ = %(banaction)s[port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"] # ban & send an e-mail with whois report to the destemail. action_mw = %(action_)s %(mta)s-whois[sender="%(sender)s", dest="%(destemail)s", protocol="%(protocol)s", chain="%(chain)s"] # ban & send an e-mail with whois report and relevant log lines # to the destemail. action_mwl = %(action_)s %(mta)s-whois-lines[sender="%(sender)s", dest="%(destemail)s", logpath="%(logpath)s", chain="%(chain)s"] # See the IMPORTANT note in action.d/xarf-login-attack for when to use this action # # ban & send a xarf e-mail to abuse contact of IP address and include relevant log lines # to the destemail. action_xarf = %(action_)s xarf-login-attack[service=%(__name__)s, sender="%(sender)s", logpath="%(logpath)s", port="%(port)s"] # ban IP on CloudFlare & send an e-mail with whois report and relevant log lines # to the destemail. action_cf_mwl = cloudflare[cfuser="%(cfemail)s", cftoken="%(cfapikey)s"] %(mta)s-whois-lines[sender="%(sender)s", dest="%(destemail)s", logpath="%(logpath)s", chain="%(chain)s"] # Report block via blocklist.de fail2ban reporting service API # # See the IMPORTANT note in action.d/blocklist_de.conf for when to use this action. # Specify expected parameters in file action.d/blocklist_de.local or if the interpolation # `action_blocklist_de` used for the action, set value of `blocklist_de_apikey` # in your `jail.local` globally (section [DEFAULT]) or per specific jail section (resp. in # corresponding jail.d/my-jail.local file). # action_blocklist_de = blocklist_de[email="%(sender)s", service="%(__name__)s", apikey="%(blocklist_de_apikey)s", agent="%(fail2ban_agent)s"] # Report ban via badips.com, and use as blacklist # # See BadIPsAction docstring in config/action.d/badips.py for # documentation for this action. # # NOTE: This action relies on banaction being present on start and therefore # should be last action defined for a jail. # action_badips = badips.py[category="%(__name__)s", banaction="%(banaction)s", agent="%(fail2ban_agent)s"] # # Report ban via badips.com (uses action.d/badips.conf for reporting only) # action_badips_report = badips[category="%(__name__)s", agent="%(fail2ban_agent)s"] # Report ban via abuseipdb.com. # # See action.d/abuseipdb.conf for usage example and details. # action_abuseipdb = abuseipdb # Choose default action. To change, just override value of 'action' with the # interpolation to the chosen action shortcut (e.g. action_mw, action_mwl, etc) in jail.local # globally (section [DEFAULT]) or per specific section action = %(action_)s # # JAILS # # # SSH servers # [sshd] # To use more aggressive sshd modes set filter parameter "mode" in jail.local: # normal (default), ddos, extra or aggressive (combines all). # See "tests/files/logs/sshd" or "filter.d/sshd.conf" for usage example and details. #mode = normal port = ssh logpath = %(sshd_log)s backend = %(sshd_backend)s [dropbear] port = ssh logpath = %(dropbear_log)s backend = %(dropbear_backend)s [selinux-ssh] port = ssh logpath = %(auditd_log)s # # HTTP servers # [apache-auth] port = http,https logpath = %(apache_error_log)s [apache-badbots] # Ban hosts which agent identifies spammer robots crawling the web # for email addresses. The mail outputs are buffered. port = http,https logpath = %(apache_access_log)s bantime = 48h maxretry = 1 [apache-noscript] port = http,https logpath = %(apache_error_log)s [apache-overflows] port = http,https logpath = %(apache_error_log)s maxretry = 2 [apache-nohome] port = http,https logpath = %(apache_error_log)s maxretry = 2 [apache-botsearch] port = http,https logpath = %(apache_error_log)s maxretry = 2 [apache-fakegooglebot] port = http,https logpath = %(apache_access_log)s maxretry = 1 ignorecommand = %(ignorecommands_dir)s/apache-fakegooglebot <ip> [apache-modsecurity] port = http,https logpath = %(apache_error_log)s maxretry = 2 [apache-shellshock] port = http,https logpath = %(apache_error_log)s maxretry = 1 [openhab-auth] filter = openhab banaction = %(banaction_allports)s logpath = /opt/openhab/logs/request.log [nginx-http-auth] port = http,https logpath = %(nginx_error_log)s # To use 'nginx-limit-req' jail you should have `ngx_http_limit_req_module` # and define `limit_req` and `limit_req_zone` as described in nginx documentation # http://nginx.org/en/docs/http/ngx_http_limit_req_module.html # or for example see in 'config/filter.d/nginx-limit-req.conf' [nginx-limit-req] port = http,https logpath = %(nginx_error_log)s [nginx-botsearch] port = http,https logpath = %(nginx_error_log)s maxretry = 2 # Ban attackers that try to use PHP's URL-fopen() functionality # through GET/POST variables. - Experimental, with more than a year # of usage in production environments. [php-url-fopen] port = http,https logpath = %(nginx_access_log)s %(apache_access_log)s [suhosin] port = http,https logpath = %(suhosin_log)s [lighttpd-auth] # Same as above for Apache's mod_auth # It catches wrong authentifications port = http,https logpath = %(lighttpd_error_log)s # # Webmail and groupware servers # [roundcube-auth] port = http,https logpath = %(roundcube_errors_log)s # Use following line in your jail.local if roundcube logs to journal. #backend = %(syslog_backend)s [openwebmail] port = http,https logpath = /var/log/openwebmail.log [horde] port = http,https logpath = /var/log/horde/horde.log [groupoffice] port = http,https logpath = /home/groupoffice/log/info.log [sogo-auth] # Monitor SOGo groupware server # without proxy this would be: # port = 20000 port = http,https logpath = /var/log/sogo/sogo.log [tine20] logpath = /var/log/tine20/tine20.log port = http,https # # Web Applications # # [drupal-auth] port = http,https logpath = %(syslog_daemon)s backend = %(syslog_backend)s [guacamole] port = http,https logpath = /var/log/tomcat*/catalina.out #logpath = /var/log/guacamole.log [monit] #Ban clients brute-forcing the monit gui login port = 2812 logpath = /var/log/monit /var/log/monit.log [webmin-auth] port = 10000 logpath = %(syslog_authpriv)s backend = %(syslog_backend)s [froxlor-auth] port = http,https logpath = %(syslog_authpriv)s backend = %(syslog_backend)s # # HTTP Proxy servers # # [squid] port = 80,443,3128,8080 logpath = /var/log/squid/access.log [3proxy] port = 3128 logpath = /var/log/3proxy.log # # FTP servers # [proftpd] port = ftp,ftp-data,ftps,ftps-data logpath = %(proftpd_log)s backend = %(proftpd_backend)s [pure-ftpd] port = ftp,ftp-data,ftps,ftps-data logpath = %(pureftpd_log)s backend = %(pureftpd_backend)s [gssftpd] port = ftp,ftp-data,ftps,ftps-data logpath = %(syslog_daemon)s backend = %(syslog_backend)s [wuftpd] port = ftp,ftp-data,ftps,ftps-data logpath = %(wuftpd_log)s backend = %(wuftpd_backend)s [vsftpd] # or overwrite it in jails.local to be # logpath = %(syslog_authpriv)s # if you want to rely on PAM failed login attempts # vsftpd's failregex should match both of those formats port = ftp,ftp-data,ftps,ftps-data logpath = %(vsftpd_log)s # # Mail servers # # ASSP SMTP Proxy Jail [assp] port = smtp,465,submission logpath = /root/path/to/assp/logs/maillog.txt [courier-smtp] port = smtp,465,submission logpath = %(syslog_mail)s backend = %(syslog_backend)s [postfix] # To use another modes set filter parameter "mode" in jail.local: mode = more port = smtp,465,submission logpath = %(postfix_log)s backend = %(postfix_backend)s [postfix-rbl] filter = postfix[mode=rbl] port = smtp,465,submission logpath = %(postfix_log)s backend = %(postfix_backend)s maxretry = 1 [sendmail-auth] port = submission,465,smtp logpath = %(syslog_mail)s backend = %(syslog_backend)s [sendmail-reject] # To use more aggressive modes set filter parameter "mode" in jail.local: # normal (default), extra or aggressive # See "tests/files/logs/sendmail-reject" or "filter.d/sendmail-reject.conf" for usage example and details. #mode = normal port = smtp,465,submission logpath = %(syslog_mail)s backend = %(syslog_backend)s [qmail-rbl] filter = qmail port = smtp,465,submission logpath = /service/qmail/log/main/current # dovecot defaults to logging to the mail syslog facility # but can be set by syslog_facility in the dovecot configuration. [dovecot] port = pop3,pop3s,imap,imaps,submission,465,sieve logpath = %(dovecot_log)s backend = %(dovecot_backend)s [sieve] port = smtp,465,submission logpath = %(dovecot_log)s backend = %(dovecot_backend)s [solid-pop3d] port = pop3,pop3s logpath = %(solidpop3d_log)s [exim] # see filter.d/exim.conf for further modes supported from filter: #mode = normal port = smtp,465,submission logpath = %(exim_main_log)s [exim-spam] port = smtp,465,submission logpath = %(exim_main_log)s [kerio] port = imap,smtp,imaps,465 logpath = /opt/kerio/mailserver/store/logs/security.log # # Mail servers authenticators: might be used for smtp,ftp,imap servers, so # all relevant ports get banned # [courier-auth] port = smtp,465,submission,imap,imaps,pop3,pop3s logpath = %(syslog_mail)s backend = %(syslog_backend)s [postfix-sasl] filter = postfix[mode=auth] port = smtp,465,submission,imap,imaps,pop3,pop3s # You might consider monitoring /var/log/mail.warn instead if you are # running postfix since it would provide the same log lines at the # "warn" level but overall at the smaller filesize. logpath = %(postfix_log)s backend = %(postfix_backend)s [perdition] port = imap,imaps,pop3,pop3s logpath = %(syslog_mail)s backend = %(syslog_backend)s [squirrelmail] port = smtp,465,submission,imap,imap2,imaps,pop3,pop3s,http,https,socks logpath = /var/lib/squirrelmail/prefs/squirrelmail_access_log [cyrus-imap] port = imap,imaps logpath = %(syslog_mail)s backend = %(syslog_backend)s [uwimap-auth] port = imap,imaps logpath = %(syslog_mail)s backend = %(syslog_backend)s # # # DNS servers # # !!! WARNING !!! # Since UDP is connection-less protocol, spoofing of IP and imitation # of illegal actions is way too simple. Thus enabling of this filter # might provide an easy way for implementing a DoS against a chosen # victim. See # http://nion.modprobe.de/blog/archives/690-fail2ban-+-dns-fail.html # Please DO NOT USE this jail unless you know what you are doing. # # IMPORTANT: see filter.d/named-refused for instructions to enable logging # This jail blocks UDP traffic for DNS requests. # [named-refused-udp] # # filter = named-refused # port = domain,953 # protocol = udp # logpath = /var/log/named/security.log # IMPORTANT: see filter.d/named-refused for instructions to enable logging # This jail blocks TCP traffic for DNS requests. [named-refused] port = domain,953 logpath = /var/log/named/security.log [nsd] port = 53 action_ = %(default/action_)s[name=%(__name__)s-tcp, protocol="tcp"] %(default/action_)s[name=%(__name__)s-udp, protocol="udp"] logpath = /var/log/nsd.log # # Miscellaneous # [asterisk] port = 5060,5061 action_ = %(default/action_)s[name=%(__name__)s-tcp, protocol="tcp"] %(default/action_)s[name=%(__name__)s-udp, protocol="udp"] logpath = /var/log/asterisk/messages maxretry = 10 [freeswitch] port = 5060,5061 action_ = %(default/action_)s[name=%(__name__)s-tcp, protocol="tcp"] %(default/action_)s[name=%(__name__)s-udp, protocol="udp"] logpath = /var/log/freeswitch.log maxretry = 10 # enable adminlog; it will log to a file inside znc's directory by default. [znc-adminlog] port = 6667 logpath = /var/lib/znc/moddata/adminlog/znc.log # To log wrong MySQL access attempts add to /etc/my.cnf in [mysqld] or # equivalent section: # log-warnings = 2 # # for syslog (daemon facility) # [mysqld_safe] # syslog # # for own logfile # [mysqld] # log-error=/var/log/mysqld.log [mysqld-auth] port = 3306 logpath = %(mysql_log)s backend = %(mysql_backend)s # Log wrong MongoDB auth (for details see filter 'filter.d/mongodb-auth.conf') [mongodb-auth] # change port when running with "--shardsvr" or "--configsvr" runtime operation port = 27017 logpath = /var/log/mongodb/mongodb.log # Jail for more extended banning of persistent abusers # !!! WARNINGS !!! # 1. 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 # 2. Increase dbpurgeage defined in fail2ban.conf to e.g. 648000 (7.5 days) # to maintain entries for failed logins for sufficient amount of time [recidive] logpath = /var/log/fail2ban.log banaction = %(banaction_allports)s bantime = 1w findtime = 1d # Generic filter for PAM. Has to be used with action which bans all # ports such as iptables-allports, shorewall [pam-generic] # pam-generic filter can be customized to monitor specific subset of 'tty's banaction = %(banaction_allports)s logpath = %(syslog_authpriv)s backend = %(syslog_backend)s [xinetd-fail] banaction = iptables-multiport-log logpath = %(syslog_daemon)s backend = %(syslog_backend)s maxretry = 2 # stunnel - need to set port for this [stunnel] logpath = /var/log/stunnel4/stunnel.log [ejabberd-auth] port = 5222 logpath = /var/log/ejabberd/ejabberd.log [counter-strike] logpath = /opt/cstrike/logs/L[0-9]*.log tcpport = 27030,27031,27032,27033,27034,27035,27036,27037,27038,27039 udpport = 1200,27000,27001,27002,27003,27004,27005,27006,27007,27008,27009,27010,27011,27012,27013,27014,27015 action_ = %(default/action_)s[name=%(__name__)s-tcp, port="%(tcpport)s", protocol="tcp"] %(default/action_)s[name=%(__name__)s-udp, port="%(udpport)s", protocol="udp"] [softethervpn] port = 500,4500 protocol = udp logpath = /usr/local/vpnserver/security_log/*/sec.log [gitlab] port = http,https logpath = /var/log/gitlab/gitlab-rails/application.log [grafana] port = http,https logpath = /var/log/grafana/grafana.log [bitwarden] port = http,https logpath = /home/*/bwdata/logs/identity/Identity/log.txt [centreon] port = http,https logpath = /var/log/centreon/login.log # consider low maxretry and a long bantime # nobody except your own Nagios server should ever probe nrpe [nagios] logpath = %(syslog_daemon)s ; nrpe.cfg may define a different log_facility backend = %(syslog_backend)s maxretry = 1 [oracleims] # see "oracleims" filter file for configuration requirement for Oracle IMS v6 and above logpath = /opt/sun/comms/messaging64/log/mail.log_current banaction = %(banaction_allports)s [directadmin] logpath = /var/log/directadmin/login.log port = 2222 [portsentry] logpath = /var/lib/portsentry/portsentry.history maxretry = 1 [pass2allow-ftp] # this pass2allow example allows FTP traffic after successful HTTP authentication port = ftp,ftp-data,ftps,ftps-data # knocking_url variable must be overridden to some secret value in jail.local knocking_url = /knocking/ filter = apache-pass[knocking_url="%(knocking_url)s"] # access log of the website with HTTP auth logpath = %(apache_access_log)s blocktype = RETURN returntype = DROP action = %(action_)s[blocktype=%(blocktype)s, returntype=%(returntype)s, actionstart_on_demand=false, actionrepair_on_unban=true] bantime = 1h maxretry = 1 findtime = 1 [murmur] # AKA mumble-server port = 64738 action_ = %(default/action_)s[name=%(__name__)s-tcp, protocol="tcp"] %(default/action_)s[name=%(__name__)s-udp, protocol="udp"] logpath = /var/log/mumble-server/mumble-server.log [screensharingd] # For Mac OS Screen Sharing Service (VNC) logpath = /var/log/system.log logencoding = utf-8 [haproxy-http-auth] # HAProxy by default doesn't log to file you'll need to set it up to forward # logs to a syslog server which would then write them to disk. # See "haproxy-http-auth" filter for a brief cautionary note when setting # maxretry and findtime. logpath = /var/log/haproxy.log [slapd] port = ldap,ldaps logpath = /var/log/slapd.log [domino-smtp] port = smtp,ssmtp logpath = /home/domino01/data/IBM_TECHNICAL_SUPPORT/console.log [phpmyadmin-syslog] port = http,https logpath = %(syslog_authpriv)s backend = %(syslog_backend)s [zoneminder] # Zoneminder HTTP/HTTPS web interface auth # Logs auth failures to apache2 error log port = http,https logpath = %(apache_error_log)s [traefik-auth] # to use 'traefik-auth' filter you have to configure your Traefik instance, # see `filter.d/traefik-auth.conf` for details and service example. port = http,https logpath = /var/log/traefik/access.log [scanlogd] logpath = %(syslog_local0)s banaction = %(banaction_allports)s