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September 18, 2011 13:41
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Blog DenyHosts configuration
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############ THESE SETTINGS ARE REQUIRED ############ | |
######################################################################## | |
# | |
# SECURE_LOG: the log file that contains sshd logging info | |
# if you are not sure, grep "sshd:" /var/log/* | |
# | |
# The file to process can be overridden with the --file command line | |
# argument | |
# | |
# Redhat or Fedora Core: | |
#SECURE_LOG = /var/log/secure | |
# | |
# Mandrake, FreeBSD or OpenBSD: | |
#SECURE_LOG = /var/log/auth.log | |
# | |
# SuSE: | |
#SECURE_LOG = /var/log/messages | |
# | |
# Mac OS X (v10.4 or greater - | |
# also refer to: http://www.denyhosts.net/faq.html#macos | |
SECURE_LOG = /var/log/secure.log | |
# | |
# Mac OS X (v10.3 or earlier): | |
#SECURE_LOG=/private/var/log/system.log | |
# | |
######################################################################## | |
######################################################################## | |
# | |
# HOSTS_DENY: the file which contains restricted host access information | |
# | |
# Most operating systems: | |
HOSTS_DENY = /etc/hosts.deny | |
# | |
# Some BSD (FreeBSD) Unixes: | |
#HOSTS_DENY = /etc/hosts.allow | |
# | |
# Another possibility (also see the next option): | |
#HOSTS_DENY = /etc/hosts.evil | |
####################################################################### | |
######################################################################## | |
# | |
# PURGE_DENY: removed HOSTS_DENY entries that are older than this time | |
# when DenyHosts is invoked with the --purge flag | |
# | |
# format is: i[dhwmy] | |
# Where 'i' is an integer (eg. 7) | |
# 'm' = minutes | |
# 'h' = hours | |
# 'd' = days | |
# 'w' = weeks | |
# 'y' = years | |
# | |
# never purge: | |
PURGE_DENY = | |
# | |
# purge entries older than 1 week | |
#PURGE_DENY = 1w | |
# | |
# purge entries older than 5 days | |
#PURGE_DENY = 5d | |
####################################################################### | |
####################################################################### | |
# | |
# PURGE_THRESHOLD: defines the maximum times a host will be purged. | |
# Once this value has been exceeded then this host will not be purged. | |
# Setting this parameter to 0 (the default) disables this feature. | |
# | |
# default: a denied host can be purged/re-added indefinitely | |
#PURGE_THRESHOLD = 0 | |
# | |
# a denied host will be purged at most 2 times. | |
#PURGE_THRESHOLD = 2 | |
# | |
####################################################################### | |
####################################################################### | |
# | |
# BLOCK_SERVICE: the service name that should be blocked in HOSTS_DENY | |
# | |
# man 5 hosts_access for details | |
# | |
# eg. sshd: 127.0.0.1 # will block sshd logins from 127.0.0.1 | |
# | |
# To block all services for the offending host: | |
#BLOCK_SERVICE = ALL | |
# To block only sshd: | |
BLOCK_SERVICE = sshd | |
# To only record the offending host and nothing else (if using | |
# an auxilary file to list the hosts). Refer to: | |
# http://denyhosts.sourceforge.net/faq.html#aux | |
#BLOCK_SERVICE = | |
# | |
####################################################################### | |
####################################################################### | |
# | |
# DENY_THRESHOLD_INVALID: block each host after the number of failed login | |
# attempts has exceeded this value. This value applies to invalid | |
# user login attempts (eg. non-existent user accounts) | |
# | |
DENY_THRESHOLD_INVALID = 5 | |
# | |
####################################################################### | |
####################################################################### | |
# | |
# DENY_THRESHOLD_VALID: block each host after the number of failed | |
# login attempts has exceeded this value. This value applies to valid | |
# user login attempts (eg. user accounts that exist in /etc/passwd) except | |
# for the "root" user | |
# | |
DENY_THRESHOLD_VALID = 10 | |
# | |
####################################################################### | |
####################################################################### | |
# | |
# DENY_THRESHOLD_ROOT: block each host after the number of failed | |
# login attempts has exceeded this value. This value applies to | |
# "root" user login attempts only. | |
# | |
DENY_THRESHOLD_ROOT = 2 | |
# | |
####################################################################### | |
####################################################################### | |
# | |
# DENY_THRESHOLD_RESTRICTED: block each host after the number of failed | |
# login attempts has exceeded this value. This value applies to | |
# usernames that appear in the WORK_DIR/restricted-usernames file only. | |
# | |
DENY_THRESHOLD_RESTRICTED = 1 | |
# | |
####################################################################### | |
####################################################################### | |
# | |
# WORK_DIR: the path that DenyHosts will use for writing data to | |
# (it will be created if it does not already exist). | |
# | |
# Note: it is recommended that you use an absolute pathname | |
# for this value (eg. /home/foo/denyhosts/data) | |
# | |
WORK_DIR = /usr/share/denyhosts/data | |
# | |
####################################################################### | |
####################################################################### | |
# | |
# SUSPICIOUS_LOGIN_REPORT_ALLOWED_HOSTS | |
# | |
# SUSPICIOUS_LOGIN_REPORT_ALLOWED_HOSTS=YES|NO | |
# If set to YES, if a suspicious login attempt results from an allowed-host | |
# then it is considered suspicious. If this is NO, then suspicious logins | |
# from allowed-hosts will not be reported. All suspicious logins from | |
# ip addresses that are not in allowed-hosts will always be reported. | |
# | |
SUSPICIOUS_LOGIN_REPORT_ALLOWED_HOSTS=YES | |
###################################################################### | |
###################################################################### | |
# | |
# HOSTNAME_LOOKUP | |
# | |
# HOSTNAME_LOOKUP=YES|NO | |
# If set to YES, for each IP address that is reported by Denyhosts, | |
# the corresponding hostname will be looked up and reported as well | |
# (if available). | |
# | |
HOSTNAME_LOOKUP=YES | |
# | |
###################################################################### | |
###################################################################### | |
# | |
# LOCK_FILE | |
# | |
# LOCK_FILE=/path/denyhosts | |
# If this file exists when DenyHosts is run, then DenyHosts will exit | |
# immediately. Otherwise, this file will be created upon invocation | |
# and deleted upon exit. This ensures that only one instance is | |
# running at a time. | |
# | |
# Redhat/Fedora: | |
#LOCK_FILE = /var/lock/subsys/denyhosts | |
# | |
# Debian | |
#LOCK_FILE = /var/run/denyhosts.pid | |
# | |
# Misc | |
LOCK_FILE = /tmp/denyhosts.lock | |
# | |
###################################################################### | |
############ THESE SETTINGS ARE OPTIONAL ############ | |
####################################################################### | |
# | |
# ADMIN_EMAIL: if you would like to receive emails regarding newly | |
# restricted hosts and suspicious logins, set this address to | |
# match your email address. If you do not want to receive these reports | |
# leave this field blank (or run with the --noemail option) | |
# | |
# Multiple email addresses can be delimited by a comma, eg: | |
# ADMIN_EMAIL = foo@bar.com, bar@foo.com, etc@foobar.com | |
# | |
ADMIN_EMAIL = | |
# | |
####################################################################### | |
####################################################################### | |
# | |
# SMTP_HOST and SMTP_PORT: if DenyHosts is configured to email | |
# reports (see ADMIN_EMAIL) then these settings specify the | |
# email server address (SMTP_HOST) and the server port (SMTP_PORT) | |
# | |
# | |
SMTP_HOST = localhost | |
SMTP_PORT = 25 | |
# | |
####################################################################### | |
####################################################################### | |
# | |
# SMTP_USERNAME and SMTP_PASSWORD: set these parameters if your | |
# smtp email server requires authentication | |
# | |
#SMTP_USERNAME=foo | |
#SMTP_PASSWORD=bar | |
# | |
###################################################################### | |
####################################################################### | |
# | |
# SMTP_FROM: you can specify the "From:" address in messages sent | |
# from DenyHosts when it reports thwarted abuse attempts | |
# | |
SMTP_FROM = DenyHosts <denyhosts@localhost> | |
# | |
####################################################################### | |
####################################################################### | |
# | |
# SMTP_SUBJECT: you can specify the "Subject:" of messages sent | |
# by DenyHosts when it reports thwarted abuse attempts | |
SMTP_SUBJECT = DenyHosts Report | |
# | |
###################################################################### | |
###################################################################### | |
# | |
# SMTP_DATE_FORMAT: specifies the format used for the "Date:" header | |
# when sending email messages. | |
# | |
# for possible values for this parameter refer to: man strftime | |
# | |
# the default: | |
# | |
#SMTP_DATE_FORMAT = %a, %d %b %Y %H:%M:%S %z | |
# | |
###################################################################### | |
###################################################################### | |
# | |
# SYSLOG_REPORT | |
# | |
# SYSLOG_REPORT=YES|NO | |
# If set to yes, when denied hosts are recorded the report data | |
# will be sent to syslog (syslog must be present on your system). | |
# The default is: NO | |
# | |
#SYSLOG_REPORT=NO | |
# | |
#SYSLOG_REPORT=YES | |
# | |
###################################################################### | |
###################################################################### | |
# | |
# ALLOWED_HOSTS_HOSTNAME_LOOKUP | |
# | |
# ALLOWED_HOSTS_HOSTNAME_LOOKUP=YES|NO | |
# If set to YES, for each entry in the WORK_DIR/allowed-hosts file, | |
# the hostname will be looked up. If your versions of tcp_wrappers | |
# and sshd sometimes log hostnames in addition to ip addresses | |
# then you may wish to specify this option. | |
# | |
#ALLOWED_HOSTS_HOSTNAME_LOOKUP=NO | |
# | |
###################################################################### | |
###################################################################### | |
# | |
# AGE_RESET_VALID: Specifies the period of time between failed login | |
# attempts that, when exceeded will result in the failed count for | |
# this host to be reset to 0. This value applies to login attempts | |
# to all valid users (those within /etc/passwd) with the | |
# exception of root. If not defined, this count will never | |
# be reset. | |
# | |
# See the comments in the PURGE_DENY section (above) | |
# for details on specifying this value or for complete details | |
# refer to: http://denyhosts.sourceforge.net/faq.html#timespec | |
# | |
AGE_RESET_VALID=5d | |
# | |
###################################################################### | |
###################################################################### | |
# | |
# AGE_RESET_ROOT: Specifies the period of time between failed login | |
# attempts that, when exceeded will result in the failed count for | |
# this host to be reset to 0. This value applies to all login | |
# attempts to the "root" user account. If not defined, | |
# this count will never be reset. | |
# | |
# See the comments in the PURGE_DENY section (above) | |
# for details on specifying this value or for complete details | |
# refer to: http://denyhosts.sourceforge.net/faq.html#timespec | |
# | |
AGE_RESET_ROOT=25d | |
# | |
###################################################################### | |
###################################################################### | |
# | |
# AGE_RESET_RESTRICTED: Specifies the period of time between failed login | |
# attempts that, when exceeded will result in the failed count for | |
# this host to be reset to 0. This value applies to all login | |
# attempts to entries found in the WORK_DIR/restricted-usernames file. | |
# If not defined, the count will never be reset. | |
# | |
# See the comments in the PURGE_DENY section (above) | |
# for details on specifying this value or for complete details | |
# refer to: http://denyhosts.sourceforge.net/faq.html#timespec | |
# | |
AGE_RESET_RESTRICTED=25d | |
# | |
###################################################################### | |
###################################################################### | |
# | |
# AGE_RESET_INVALID: Specifies the period of time between failed login | |
# attempts that, when exceeded will result in the failed count for | |
# this host to be reset to 0. This value applies to login attempts | |
# made to any invalid username (those that do not appear | |
# in /etc/passwd). If not defined, count will never be reset. | |
# | |
# See the comments in the PURGE_DENY section (above) | |
# for details on specifying this value or for complete details | |
# refer to: http://denyhosts.sourceforge.net/faq.html#timespec | |
# | |
AGE_RESET_INVALID=10d | |
# | |
###################################################################### | |
###################################################################### | |
# | |
# RESET_ON_SUCCESS: If this parameter is set to "yes" then the | |
# failed count for the respective ip address will be reset to 0 | |
# if the login is successful. | |
# | |
# The default is RESET_ON_SUCCESS = no | |
# | |
#RESET_ON_SUCCESS = yes | |
# | |
##################################################################### | |
###################################################################### | |
# | |
# PLUGIN_DENY: If set, this value should point to an executable | |
# program that will be invoked when a host is added to the | |
# HOSTS_DENY file. This executable will be passed the host | |
# that will be added as it's only argument. | |
# | |
#PLUGIN_DENY=/usr/share/denyhosts/plugins/notify_isp.rb | |
# | |
###################################################################### | |
###################################################################### | |
# | |
# PLUGIN_PURGE: If set, this value should point to an executable | |
# program that will be invoked when a host is removed from the | |
# HOSTS_DENY file. This executable will be passed the host | |
# that is to be purged as it's only argument. | |
# | |
#PLUGIN_PURGE=/usr/bin/true | |
# | |
###################################################################### | |
###################################################################### | |
# | |
# USERDEF_FAILED_ENTRY_REGEX: if set, this value should contain | |
# a regular expression that can be used to identify additional | |
# hackers for your particular ssh configuration. This functionality | |
# extends the built-in regular expressions that DenyHosts uses. | |
# This parameter can be specified multiple times. | |
# See this faq entry for more details: | |
# http://denyhosts.sf.net/faq.html#userdef_regex | |
# | |
#USERDEF_FAILED_ENTRY_REGEX= | |
# | |
# | |
###################################################################### | |
######### THESE SETTINGS ARE SPECIFIC TO DAEMON MODE ########## | |
####################################################################### | |
# | |
# DAEMON_LOG: when DenyHosts is run in daemon mode (--daemon flag) | |
# this is the logfile that DenyHosts uses to report it's status. | |
# To disable logging, leave blank. (default is: /var/log/denyhosts) | |
# | |
DAEMON_LOG = /var/log/denyhosts | |
# | |
# disable logging: | |
#DAEMON_LOG = | |
# | |
###################################################################### | |
####################################################################### | |
# | |
# DAEMON_LOG_TIME_FORMAT: when DenyHosts is run in daemon mode | |
# (--daemon flag) this specifies the timestamp format of | |
# the DAEMON_LOG messages (default is the ISO8061 format: | |
# ie. 2005-07-22 10:38:01,745) | |
# | |
# for possible values for this parameter refer to: man strftime | |
# | |
# Jan 1 13:05:59 | |
#DAEMON_LOG_TIME_FORMAT = %b %d %H:%M:%S | |
# | |
# Jan 1 01:05:59 | |
#DAEMON_LOG_TIME_FORMAT = %b %d %I:%M:%S | |
# | |
###################################################################### | |
####################################################################### | |
# | |
# DAEMON_LOG_MESSAGE_FORMAT: when DenyHosts is run in daemon mode | |
# (--daemon flag) this specifies the message format of each logged | |
# entry. By default the following format is used: | |
# | |
# %(asctime)s - %(name)-12s: %(levelname)-8s %(message)s | |
# | |
# Where the "%(asctime)s" portion is expanded to the format | |
# defined by DAEMON_LOG_TIME_FORMAT | |
# | |
# This string is passed to python's logging.Formatter contstuctor. | |
# For details on the possible format types please refer to: | |
# http://docs.python.org/lib/node357.html | |
# | |
# This is the default: | |
#DAEMON_LOG_MESSAGE_FORMAT = %(asctime)s - %(name)-12s: %(levelname)-8s %(message)s | |
# | |
# | |
###################################################################### | |
####################################################################### | |
# | |
# DAEMON_SLEEP: when DenyHosts is run in daemon mode (--daemon flag) | |
# this is the amount of time DenyHosts will sleep between polling | |
# the SECURE_LOG. See the comments in the PURGE_DENY section (above) | |
# for details on specifying this value or for complete details | |
# refer to: http://denyhosts.sourceforge.net/faq.html#timespec | |
# | |
# | |
DAEMON_SLEEP = 30s | |
# | |
####################################################################### | |
####################################################################### | |
# | |
# DAEMON_PURGE: How often should DenyHosts, when run in daemon mode, | |
# run the purge mechanism to expire old entries in HOSTS_DENY | |
# This has no effect if PURGE_DENY is blank. | |
# | |
DAEMON_PURGE = 1h | |
# | |
####################################################################### | |
######### THESE SETTINGS ARE SPECIFIC TO ########## | |
######### DAEMON SYNCHRONIZATION ########## | |
####################################################################### | |
# | |
# Synchronization mode allows the DenyHosts daemon the ability | |
# to periodically send and receive denied host data such that | |
# DenyHosts daemons worldwide can automatically inform one | |
# another regarding banned hosts. This mode is disabled by | |
# default, you must uncomment SYNC_SERVER to enable this mode. | |
# | |
# for more information, please refer to: | |
# http:/denyhosts.sourceforge.net/faq.html#sync | |
# | |
####################################################################### | |
####################################################################### | |
# | |
# SYNC_SERVER: The central server that communicates with DenyHost | |
# daemons. Currently, denyhosts.net is the only available server | |
# however, in the future, it may be possible for organizations to | |
# install their own server for internal network synchronization | |
# | |
# To disable synchronization (the default), do nothing. | |
# | |
# To enable synchronization, you must uncomment the following line: | |
#SYNC_SERVER = http://xmlrpc.denyhosts.net:9911 | |
# | |
####################################################################### | |
####################################################################### | |
# | |
# SYNC_INTERVAL: the interval of time to perform synchronizations if | |
# SYNC_SERVER has been uncommented. The default is 1 hour. | |
# | |
#SYNC_INTERVAL = 1h | |
# | |
####################################################################### | |
####################################################################### | |
# | |
# SYNC_UPLOAD: allow your DenyHosts daemon to transmit hosts that have | |
# been denied? This option only applies if SYNC_SERVER has | |
# been uncommented. | |
# The default is SYNC_UPLOAD = yes | |
# | |
#SYNC_UPLOAD = no | |
#SYNC_UPLOAD = yes | |
# | |
####################################################################### | |
####################################################################### | |
# | |
# SYNC_DOWNLOAD: allow your DenyHosts daemon to receive hosts that have | |
# been denied by others? This option only applies if SYNC_SERVER has | |
# been uncommented. | |
# The default is SYNC_DOWNLOAD = yes | |
# | |
#SYNC_DOWNLOAD = no | |
#SYNC_DOWNLOAD = yes | |
# | |
# | |
# | |
####################################################################### | |
####################################################################### | |
# | |
# SYNC_DOWNLOAD_THRESHOLD: If SYNC_DOWNLOAD is enabled this parameter | |
# filters the returned hosts to those that have been blocked this many | |
# times by others. That is, if set to 1, then if a single DenyHosts | |
# server has denied an ip address then you will receive the denied host. | |
# | |
# See also SYNC_DOWNLOAD_RESILIENCY | |
# | |
#SYNC_DOWNLOAD_THRESHOLD = 10 | |
# | |
# The default is SYNC_DOWNLOAD_THRESHOLD = 3 | |
# | |
#SYNC_DOWNLOAD_THRESHOLD = 3 | |
# | |
####################################################################### | |
####################################################################### | |
# | |
# SYNC_DOWNLOAD_RESILIENCY: If SYNC_DOWNLOAD is enabled then the | |
# value specified for this option limits the downloaded data | |
# to this resiliency period or greater. | |
# | |
# Resiliency is defined as the timespan between a hackers first known | |
# attack and it's most recent attack. Example: | |
# | |
# If the centralized denyhosts.net server records an attack at 2 PM | |
# and then again at 5 PM, specifying a SYNC_DOWNLOAD_RESILIENCY = 4h | |
# will not download this ip address. | |
# | |
# However, if the attacker is recorded again at 6:15 PM then the | |
# ip address will be downloaded by your DenyHosts instance. | |
# | |
# This value is used in conjunction with the SYNC_DOWNLOAD_THRESHOLD | |
# and only hosts that satisfy both values will be downloaded. | |
# This value has no effect if SYNC_DOWNLOAD_THRESHOLD = 1 | |
# | |
# The default is SYNC_DOWNLOAD_RESILIENCY = 5h (5 hours) | |
# | |
# Only obtain hackers that have been at it for 2 days or more: | |
#SYNC_DOWNLOAD_RESILIENCY = 2d | |
# | |
# Only obtain hackers that have been at it for 5 hours or more: | |
#SYNC_DOWNLOAD_RESILIENCY = 5h | |
# | |
####################################################################### |
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