diff --git a/data/hooks/conf_regen/52-fail2ban b/data/hooks/conf_regen/52-fail2ban index 1c262078b..950f27b5b 100755 --- a/data/hooks/conf_regen/52-fail2ban +++ b/data/hooks/conf_regen/52-fail2ban @@ -9,9 +9,11 @@ do_pre_regen() { fail2ban_dir="${pending_dir}/etc/fail2ban" mkdir -p "${fail2ban_dir}/filter.d" + mkdir -p "${fail2ban_dir}/jail.d" cp yunohost.conf "${fail2ban_dir}/filter.d/yunohost.conf" cp jail.conf "${fail2ban_dir}/jail.conf" + cp yunohost-jails.conf "${fail2ban_dir}/jail.d/" } do_post_regen() { diff --git a/data/templates/fail2ban/jail.conf b/data/templates/fail2ban/jail.conf index 4047306a7..d80e3d0af 100644 --- a/data/templates/fail2ban/jail.conf +++ b/data/templates/fail2ban/jail.conf @@ -1,23 +1,52 @@ -# 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. +# WARNING: heavily refactored in 0.9.0 release. Please review and +# customize settings for your setup. # -# Comments: use '#' for comment lines and ';' for inline comments +# 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.: # -# To avoid merges during upgrades DO NOT MODIFY THIS FILE -# and rather provide your changes in /etc/fail2ban/jail.local +# 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 = 3600 +# +# [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 +# + # "ignoreip" can be an IP address, a CIDR mask or a DNS host. Fail2ban will not # ban a host which matches an address in this list. Several addresses can be -# defined using space separator. +# defined using space (and/or comma) separator. ignoreip = 127.0.0.1/8 # External command that will take an tagged arguments to ignore, e.g. , @@ -31,57 +60,81 @@ bantime = 600 # A host is banned if it has generated "maxretry" during the last "findtime" # seconds. -findtime = 600 -maxretry = 3 +findtime = 600 + +# "maxretry" is the number of failures before a host get banned. +maxretry = 5 # "backend" specifies the backend used to get files modification. -# Available options are "pyinotify", "gamin", "polling" and "auto". +# 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. +# 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. +# 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. +# 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 reverse DNS lookups are performed, or ignore all hostnames in logs +# warn when DNS lookups are performed, or ignore all hostnames in logs # -# yes: if a hostname is encountered, a reverse DNS lookup will be performed. -# warn: if a hostname is encountered, a reverse DNS lookup will be performed, +# 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" # -# Destination email address used solely for the interpolations in -# jail.{conf,local} configuration files. -destemail = root@localhost +# 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 # -# Name of the sender for mta actions -sendername = Fail2Ban +# true: jail will be enabled and log files will get monitored for changes +# false: jail is not enabled +enabled = false + + +# "filter" defines the filter to use by the jail. +# By default jails have names matching their filter name +# +filter = %(__name__)s -# Email address of the sender -sender = fail2ban@localhost # # ACTIONS # -# 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 +# Some options used for actions -# email action. Since 0.8.1 upstream fail2ban uses sendmail -# MTA for the mailing. Change mta configuration parameter to mail -# if you want to revert to conventional 'mail'. +# 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@localhost + +# 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 @@ -90,303 +143,461 @@ protocol = tcp # Specify chain where jumps would need to be added in iptables-* actions chain = INPUT +# 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[name=%(__name__)s, port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"] +action_ = %(banaction)s[name=%(__name__)s, bantime="%(bantime)s", port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"] # ban & send an e-mail with whois report to the destemail. -action_mw = %(banaction)s[name=%(__name__)s, port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"] - %(mta)s-whois[name=%(__name__)s, dest="%(destemail)s", protocol="%(protocol)s", chain="%(chain)s", sendername="%(sendername)s"] +action_mw = %(banaction)s[name=%(__name__)s, bantime="%(bantime)s", port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"] + %(mta)s-whois[name=%(__name__)s, 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 = %(banaction)s[name=%(__name__)s, port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"] - %(mta)s-whois-lines[name=%(__name__)s, dest="%(destemail)s", logpath=%(logpath)s, chain="%(chain)s", sendername="%(sendername)s"] +action_mwl = %(banaction)s[name=%(__name__)s, bantime="%(bantime)s", port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"] + %(mta)s-whois-lines[name=%(__name__)s, 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 = %(banaction)s[name=%(__name__)s, bantime="%(bantime)s", port="%(port)s", protocol="%(protocol)s", chain="%(chain)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[name=%(__name__)s, 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. Create a file jail.d/blocklist_de.local containing +# [Init] +# blocklist_de_apikey = {api key from registration] +# +action_blocklist_de = blocklist_de[email="%(sender)s", service=%(filter)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"] # 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 # -# Next jails corresponds to the standard configuration in Fail2ban 0.6 which -# was shipped in Debian. Enable any defined here jail by including # -# [SECTION_NAME] -# enabled = true - +# SSH servers # -# in /etc/fail2ban/jail.local. -# -# Optionally you may override any other parameter (e.g. banaction, -# action, port, logpath, etc) in that section within jail.local -[ssh] +[sshd] + +port = ssh +logpath = %(sshd_log)s +backend = %(sshd_backend)s + + +[sshd-ddos] +# This jail corresponds to the standard configuration in Fail2ban. +# The mail-whois action send a notification e-mail with a whois request +# in the body. +port = ssh +logpath = %(sshd_log)s +backend = %(sshd_backend)s -enabled = true -port = ssh -filter = sshd -logpath = /var/log/auth.log -maxretry = 6 [dropbear] -enabled = false port = ssh -filter = dropbear -logpath = /var/log/auth.log -maxretry = 6 - -# Generic filter for pam. Has to be used with action which bans all ports -# such as iptables-allports, shorewall -[pam-generic] - -enabled = true -# pam-generic filter can be customized to monitor specific subset of 'tty's -filter = pam-generic -# port actually must be irrelevant but lets leave it all for some possible uses -port = all -banaction = iptables-allports -#port = anyport -logpath = /var/log/auth.log -maxretry = 6 - -[xinetd-fail] - -enabled = false -filter = xinetd-fail -port = all -banaction = iptables-multiport-log -logpath = /var/log/daemon.log -maxretry = 2 +logpath = %(dropbear_log)s +backend = %(dropbear_backend)s -[ssh-ddos] +[selinux-ssh] -enabled = false port = ssh -filter = sshd-ddos -logpath = /var/log/auth.log -maxretry = 6 - - -# Here we use blackhole routes for not requiring any additional kernel support -# to store large volumes of banned IPs - -[ssh-route] - -enabled = false -filter = sshd -action = route -logpath = /var/log/sshd.log -maxretry = 6 - -# Here we use a combination of Netfilter/Iptables and IPsets -# for storing large volumes of banned IPs -# -# IPset comes in two versions. See ipset -V for which one to use -# requires the ipset package and kernel support. -[ssh-iptables-ipset4] - -enabled = false -port = ssh -filter = sshd -banaction = iptables-ipset-proto4 -logpath = /var/log/sshd.log -maxretry = 6 - -[ssh-iptables-ipset6] - -enabled = false -port = ssh -filter = sshd -banaction = iptables-ipset-proto6 -logpath = /var/log/sshd.log -maxretry = 6 +logpath = %(auditd_log)s # # HTTP servers # -[apache] +[apache-auth] -enabled = false port = http,https -filter = apache-auth -logpath = /var/log/apache*/*error.log -maxretry = 6 +logpath = %(apache_error_log)s -# default action is now multiport, so apache-multiport jail was left -# for compatibility with previous (<0.7.6-2) releases -[apache-multiport] -enabled = false -port = http,https -filter = apache-auth -logpath = /var/log/apache*/*error.log -maxretry = 6 +[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 = 172800 +maxretry = 1 + [apache-noscript] -enabled = false port = http,https -filter = apache-noscript -logpath = /var/log/apache*/*error.log -maxretry = 6 +logpath = %(apache_error_log)s + [apache-overflows] -enabled = false port = http,https -filter = apache-overflows -logpath = /var/log/apache*/*error.log +logpath = %(apache_error_log)s maxretry = 2 -[apache-modsecurity] - -enabled = false -filter = apache-modsecurity -port = http,https -logpath = /var/log/apache*/*error.log -maxretry = 2 [apache-nohome] -enabled = false -filter = apache-nohome port = http,https -logpath = /var/log/apache*/*error.log +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 + + +[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 +action = iptables-allports[name=NoAuthFailures] +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] -enabled = false port = http,https -filter = php-url-fopen -logpath = /var/www/*/logs/access_log +logpath = %(nginx_access_log)s + %(apache_access_log)s -# A simple PHP-fastcgi jail which works with lighttpd. -# If you run a lighttpd server, then you probably will -# find these kinds of messages in your error_log: -# ALERT – tried to register forbidden variable ‘GLOBALS’ -# through GET variables (attacker '1.2.3.4', file '/var/www/default/htdocs/index.php') -[lighttpd-fastcgi] +[suhosin] -enabled = false port = http,https -filter = lighttpd-fastcgi -logpath = /var/log/lighttpd/error.log +logpath = %(suhosin_log)s -# Same as above for mod_auth -# It catches wrong authentifications [lighttpd-auth] - -enabled = false +# Same as above for Apache's mod_auth +# It catches wrong authentifications port = http,https -filter = suhosin -logpath = /var/log/lighttpd/error.log +logpath = %(lighttpd_error_log)s -[nginx-http-auth] -enabled = false -filter = nginx-http-auth -port = http,https -logpath = /var/log/nginx/error.log - -# Monitor roundcube server +# +# Webmail and groupware servers +# [roundcube-auth] -enabled = false -filter = roundcube-auth port = http,https -logpath = /var/log/roundcube/userlogins +logpath = %(roundcube_errors_log)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] - -enabled = false -filter = sogo-auth -port = http, https +# 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 + +[monit] +#Ban clients brute-forcing the monit gui login +port = 2812 +logpath = /var/log/monit + + +[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 # -[vsftpd] - -enabled = false -port = ftp,ftp-data,ftps,ftps-data -filter = vsftpd -logpath = /var/log/vsftpd.log -# or overwrite it in jails.local to be -# logpath = /var/log/auth.log -# if you want to rely on PAM failed login attempts -# vsftpd's failregex should match both of those formats -maxretry = 6 - [proftpd] -enabled = false port = ftp,ftp-data,ftps,ftps-data -filter = proftpd -logpath = /var/log/proftpd/proftpd.log -maxretry = 6 +logpath = %(proftpd_log)s +backend = %(proftpd_backend)s [pure-ftpd] -enabled = false port = ftp,ftp-data,ftps,ftps-data -filter = pure-ftpd -logpath = /var/log/syslog -maxretry = 6 +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] -enabled = false port = ftp,ftp-data,ftps,ftps-data -filter = wuftpd -logpath = /var/log/syslog -maxretry = 6 +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] -enabled = true -port = smtp,ssmtp,submission -filter = postfix -logpath = /var/log/mail.log +port = smtp,465,submission +logpath = %(postfix_log)s +backend = %(postfix_backend)s -[couriersmtp] +[postfix-rbl] -enabled = false -port = smtp,ssmtp,submission -filter = couriersmtp -logpath = /var/log/mail.log +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] + +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] + +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 # @@ -394,60 +605,55 @@ logpath = /var/log/mail.log # all relevant ports get banned # -[courierauth] +[courier-auth] -enabled = false -port = smtp,ssmtp,submission,imap2,imap3,imaps,pop3,pop3s -filter = courierlogin -logpath = /var/log/mail.log +port = smtp,465,submission,imap3,imaps,pop3,pop3s +logpath = %(syslog_mail)s +backend = %(syslog_backend)s -[sasl] +[postfix-sasl] -enabled = true -port = smtp,ssmtp,submission,imap2,imap3,imaps,pop3,pop3s -filter = postfix-sasl +port = smtp,465,submission,imap3,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 = /var/log/mail.log - -[dovecot] - -enabled = true -port = smtp,ssmtp,submission,imap2,imap3,imaps,pop3,pop3s -filter = dovecot -logpath = /var/log/mail.log - -# To log wrong MySQL access attempts add to /etc/my.cnf: -# log-error=/var/log/mysqld.log -# log-warning = 2 -[mysqld-auth] - -enabled = false -filter = mysqld-auth -port = 3306 -logpath = /var/log/mysqld.log +logpath = %(postfix_log)s +backend = %(postfix_backend)s -# DNS Servers +[perdition] + +port = imap3,imaps,pop3,pop3s +logpath = %(syslog_mail)s +backend = %(syslog_backend)s + + +[squirrelmail] + +port = smtp,465,submission,imap2,imap3,imaps,pop3,pop3s,http,https,socks +logpath = /var/lib/squirrelmail/prefs/squirrelmail_access_log + + +[cyrus-imap] + +port = imap3,imaps +logpath = %(syslog_mail)s +backend = %(syslog_backend)s + + +[uwimap-auth] + +port = imap3,imaps +logpath = %(syslog_mail)s +backend = %(syslog_backend)s -# These jails block attacks against named (bind9). By default, logging is off -# with bind9 installation. You will need something like this: # -# logging { -# channel security_file { -# file "/var/log/named/security.log" versions 3 size 30m; -# severity dynamic; -# print-time yes; -# }; -# category security { -# security_file; -# }; -# }; # -# in your named.conf to provide proper logging +# DNS servers +# + # !!! WARNING !!! # Since UDP is connection-less protocol, spoofing of IP and imitation @@ -456,131 +662,194 @@ logpath = /var/log/mysqld.log # 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. -#[named-refused-udp] # -#enabled = false -#port = domain,953 -#protocol = udp -#filter = named-refused -#logpath = /var/log/named/security.log +# 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 -[named-refused-tcp] +# IMPORTANT: see filter.d/named-refused for instructions to enable logging +# This jail blocks TCP traffic for DNS requests. + +[named-refused] -enabled = false port = domain,953 -protocol = tcp -filter = named-refused logpath = /var/log/named/security.log + +[nsd] + +port = 53 +action = %(banaction)s[name=%(__name__)s-tcp, port="%(port)s", protocol="tcp", chain="%(chain)s", actname=%(banaction)s-tcp] + %(banaction)s[name=%(__name__)s-udp, port="%(port)s", protocol="udp", chain="%(chain)s", actname=%(banaction)s-udp] +logpath = /var/log/nsd.log + + +# +# Miscellaneous +# + +[asterisk] + +port = 5060,5061 +action = %(banaction)s[name=%(__name__)s-tcp, port="%(port)s", protocol="tcp", chain="%(chain)s", actname=%(banaction)s-tcp] + %(banaction)s[name=%(__name__)s-udp, port="%(port)s", protocol="udp", chain="%(chain)s", actname=%(banaction)s-udp] + %(mta)s-whois[name=%(__name__)s, dest="%(destemail)s"] +logpath = /var/log/asterisk/messages +maxretry = 10 + + [freeswitch] -enabled = false -filter = freeswitch +port = 5060,5061 +action = %(banaction)s[name=%(__name__)s-tcp, port="%(port)s", protocol="tcp", chain="%(chain)s", actname=%(banaction)s-tcp] + %(banaction)s[name=%(__name__)s-udp, port="%(port)s", protocol="udp", chain="%(chain)s", actname=%(banaction)s-udp] + %(mta)s-whois[name=%(__name__)s, dest="%(destemail)s"] logpath = /var/log/freeswitch.log maxretry = 10 -action = iptables-multiport[name=freeswitch-tcp, port="5060,5061,5080,5081", protocol=tcp] - iptables-multiport[name=freeswitch-udp, port="5060,5061,5080,5081", protocol=udp] - -[ejabberd-auth] - -enabled = false -filter = ejabberd-auth -port = xmpp-client -protocol = tcp -logpath = /var/log/ejabberd/ejabberd.log -# Multiple jails, 1 per protocol, are necessary ATM: -# see https://github.com/fail2ban/fail2ban/issues/37 -[asterisk-tcp] +# To log wrong MySQL access attempts add to /etc/my.cnf in [mysqld] or +# equivalent section: +# log-warning = 2 +# +# for syslog (daemon facility) +# [mysqld_safe] +# syslog +# +# for own logfile +# [mysqld] +# log-error=/var/log/mysqld.log +[mysqld-auth] -enabled = false -filter = asterisk -port = 5060,5061 -protocol = tcp -logpath = /var/log/asterisk/messages +port = 3306 +logpath = %(mysql_log)s +backend = %(mysql_backend)s -[asterisk-udp] -enabled = false -filter = asterisk -port = 5060,5061 -protocol = udp -logpath = /var/log/asterisk/messages +# 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 -# !!! 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 +# !!! 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] -enabled = false -filter = recidive logpath = /var/log/fail2ban.log -action = iptables-allports[name=recidive] - sendmail-whois-lines[name=recidive, logpath=/var/log/fail2ban.log] +banaction = %(banaction_allports)s bantime = 604800 ; 1 week findtime = 86400 ; 1 day -maxretry = 5 -# See the IMPORTANT note in action.d/blocklist_de.conf for when to -# use this action -# -# Report block via blocklist.de fail2ban reporting service API -# See action.d/blocklist_de.conf for more information -[ssh-blocklist] -enabled = false -filter = sshd -action = iptables[name=SSH, port=ssh, protocol=tcp] - sendmail-whois[name=SSH, dest="%(destemail)s", sender="%(sender)s", sendername="%(sendername)s"] - blocklist_de[email="%(sender)s", apikey="xxxxxx", service="%(filter)s"] -logpath = /var/log/sshd.log -maxretry = 20 +# 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 +# Firewall: http://www.cstrike-planet.com/faq/6 +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 = %(banaction)s[name=%(__name__)s-tcp, port="%(tcpport)s", protocol="tcp", chain="%(chain)s", actname=%(banaction)s-tcp] + %(banaction)s[name=%(__name__)s-udp, port="%(udpport)s", protocol="udp", chain="%(chain)s", actname=%(banaction)s-udp] # consider low maxretry and a long bantime # nobody except your own Nagios server should ever probe nrpe [nagios] -enabled = false -filter = nagios -action = iptables[name=Nagios, port=5666, protocol=tcp] - sendmail-whois[name=Nagios, dest="%(destemail)s", sender="%(sender)s", sendername="%(sendername)s"] -logpath = /var/log/messages ; nrpe.cfg may define a different log_facility + +logpath = %(syslog_daemon)s ; nrpe.cfg may define a different log_facility +backend = %(syslog_backend)s maxretry = 1 -[nginx] -enabled = true -port = http,https -filter = apache-auth -logpath = /var/log/nginx*/*error.log -maxretry = 6 +[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 -[nginx-noscript] +[directadmin] +logpath = /var/log/directadmin/login.log +port = 2222 -enabled = false -port = http,https -filter = apache-noscript -logpath = /var/log/nginx*/*error.log -maxretry = 6 +[portsentry] +logpath = /var/lib/portsentry/portsentry.history +maxretry = 1 -[nginx-overflows] +[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 +bantime = 3600 +maxretry = 1 +findtime = 1 -enabled = false -port = http,https -filter = apache-overflows -logpath = /var/log/nginx*/*error.log -maxretry = 4 -[yunohost] +[murmur] +# AKA mumble-server +port = 64738 +action = %(banaction)s[name=%(__name__)s-tcp, port="%(port)s", protocol=tcp, chain="%(chain)s", actname=%(banaction)s-tcp] + %(banaction)s[name=%(__name__)s-udp, port="%(port)s", protocol=udp, chain="%(chain)s", actname=%(banaction)s-udp] +logpath = /var/log/mumble-server/mumble-server.log -enabled = true -port = http,https -protocol = tcp -filter = yunohost -logpath = /var/log/nginx/*error.log - /var/log/nginx/*access.log -maxretry = 6 + +[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 +filter = slapd +logpath = /var/log/slapd.log diff --git a/data/templates/fail2ban/yunohost-jails.conf b/data/templates/fail2ban/yunohost-jails.conf new file mode 100644 index 000000000..e0d7fd7c2 --- /dev/null +++ b/data/templates/fail2ban/yunohost-jails.conf @@ -0,0 +1,32 @@ +[sshd] +enabled = true + +[sshd-ddos] +enabled = true + +[nginx-http-auth] +enabled = true + +[postfix] +enabled = true + +[dovecot] +enabled = true + +[postfix-sasl] +enable = true + +[recidive] +enable = true + +[pam-generic] +enabled = true + +[yunohost] +enabled = true +port = http,https +protocol = tcp +filter = yunohost +logpath = /var/log/nginx/*error.log + /var/log/nginx/*access.log +maxretry = 6