jail.Ubuntu22.j2

#
# 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-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 (don't grows 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 bellow,
# 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{% if inventory_hostname in groups.docker %} 172.16.0.0/12 192.168.0.0/16{% endif %}{% for host in groups.docker_nagios %} {{ hostvars[host].ansible_host }}/32{% endfor %}

# 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  = 86400 ; ban for 1 day

# A host is banned if it has generated "maxretry" during the last "findtime"
# seconds.
findtime  = 3600 ; search for 1 hour

# "maxretry" is the number of failures before a host get banned.
maxretry = 3

# "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 = polling

# "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 = {{ default_maintenance_email }}

# Sender email address used solely for some actions
sender = {{ inventory_hostname|lower }}_server@{{ inventory_hostname|lower }}.server

# 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 = 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, 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, 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, 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.
# 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=%(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"]

# 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]
backend = systemd
enabled = true
logpath = /var/log/auth.log
mode    = aggressive
port    = {{ default_sshd_port }}


# 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]
banaction = %(banaction_allports)s
bantime  = 1w
enabled = true
findtime = 1d
logpath  = /var/log/fail2ban.log


{% if inventory_hostname in groups.gitlab %}
#
# HTTP servers
#

[nginx-http-auth]
enabled	= true
port    = http,https
logpath = /var/log/gitlab/nginx/*error.log

[nginx-botsearch]
enabled	 = true
port     = http,https
logpath  = /var/log/gitlab/nginx/*error.log
maxretry = 3


{% endif %}
{% if inventory_hostname in groups.odoo_server or inventory_hostname in groups.owncloud_server %}
#
# HTTP servers
#

[nginx-http-auth]
enabled	= true
port    = http,https
logpath = /var/log/nginx/*error.log

[nginx-botsearch]
enabled	 = true
port     = http,https
logpath  = /var/log/nginx/*error.log
maxretry = 2


{% endif %}
{% if inventory_hostname in groups.docker and inventory_hostname not in groups.docker_nextcloud %}
#
# Docker containers
#

[docker-traefik-auth]
chain   = DOCKER-USER
enabled = true
filter  = traefik-auth
{% if docker_userns_remap %}
logpath = /var/lib/docker/{{ dockremap_subuid | default("*") }}.{{ dockremap_subgid | default("*") }}/volumes/inverseproxy_logs/_data/access.log
{% else %}
logpath = /var/lib/docker/volumes/inverseproxy_logs/_data/access.log
{% endif %}
port    = http,https

{% endif %}