mirror of https://github.com/fail2ban/fail2ban
Merge 8e560d3f4a into 86b9adb2f5
azrobb
GitHub
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d7e85a83fe
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# Fail2Ban configuration file
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#
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# Author: Russell Odom <russ@gloomytrousers.co.uk>
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#
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# Pwhois modifications added by Robb Ballard <robb@pwhois.org>
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# See doc/README.pwhois for more information.
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#
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# Sends a complaint e-mail to addresses listed in the whois record for an
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# offending IP address.
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#
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# You should provide the <logpath> in the jail config - lines from the log
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# matching the given IP address will be provided in the complaint as evidence.
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#
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# Note that we will try to use e-mail addresses that are most likely to be abuse
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# addresses (based on various keywords). If they aren't found we fall back on
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# any other addresses found in the whois record, with a few exceptions.
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# If no addresses are found, no e-mail is sent.
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#
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# WARNING
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# -------
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#
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# Please do not use this action unless you are certain that fail2ban
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# does not result in "false positives" for your deployment. False
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# positive reports could serve a mis-favor to the original cause by
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# flooding corresponding contact addresses, and complicating the work
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# of administration personnel responsible for handling (verified) legit
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# complains.
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#
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# Please consider using e.g. sendmail-whois-lines.conf action which
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# would send the reports with relevant information to you, so the
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# report could be first reviewed and then forwarded to a corresponding
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# contact if legit.
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#
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[Definition]
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# Option: actionstart
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# Notes.: command executed once at the start of Fail2Ban.
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# Values: CMD
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#
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actionstart =
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# Option: actionstop
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# Notes.: command executed once at the end of Fail2Ban
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# Values: CMD
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#
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actionstop =
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# Option: actioncheck
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# Notes.: command executed once before each actionban command
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# Values: CMD
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#
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actioncheck =
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# Option: actionban
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# Notes.: command executed when banning an IP. Take care that the
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# command is executed with Fail2Ban user rights.
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# Tags: See jail.conf(5) man page
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# Values: CMD
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#
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actionban = ADDRESSES=`/usr/bin/whois -h whois.pwhois.org 'app="fail2ban:<name>" type=all <ip>' | perl -e 'while (<STDIN>) { next if /^changed|@(ripe|apnic)\.net/io; $m += (/abuse|trouble:|report|spam|security/io?3:0); if (/([a-z0-9_\-\.+]+@[a-z0-9\-]+(\.[[a-z0-9\-]+)+)/io) { while (s/([a-z0-9_\-\.+]+@[a-z0-9\-]+(\.[[a-z0-9\-]+)+)//io) { if ($m) { $a{lc($1)}=$m } else { $b{lc($1)}=$m } } $m=0 } else { $m && --$m } } if (%%a) {print join(",",keys(%%a))} else {print join(",",keys(%%b))}'`
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IP=<ip>
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if [ ! -z "$ADDRESSES" ]; then
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(printf %%b "<message>\n"; date '+Note: Local timezone is %%z (%%Z)'; grep '<ip>' <logpath>) | <mailcmd> "Abuse from <ip>" <mailargs> $ADDRESSES
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fi
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# Option: actionunban
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# Notes.: command executed when unbanning an IP. Take care that the
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# command is executed with Fail2Ban user rights.
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# Tags: See jail.conf(5) man page
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# Values: CMD
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#
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actionunban =
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[Init]
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message = Dear Sir/Madam,\n\nWe have detected abuse from the IP address $IP, which according to a whois lookup is on your network. We would appreciate if you would investigate and take action as appropriate.\n\nLog lines are given below, but please ask if you require any further information.\n\n(If you are not the correct person to contact about this please accept our apologies - your e-mail address was extracted from the whois record by an automated process. This mail was generated by Fail2Ban.)\n
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# Path to the log files which contain relevant lines for the abuser IP
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#
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logpath = /dev/null
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# Option: mailcmd
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# Notes.: Your system mail command. Is passed 2 args: subject and recipient
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# Values: CMD
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#
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mailcmd = mail -s
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# Option: mailargs
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# Notes.: Additional arguments to mail command. e.g. for standard Unix mail:
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# CC reports to another address:
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# -c me@example.com
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# Appear to come from a different address - the '--' indicates
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# arguments to be passed to Sendmail:
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# -- -f me@example.com
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# Values: [ STRING ]
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#
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mailargs =
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@ -0,0 +1,85 @@
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# Fail2Ban configuration file
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#
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# Author: Cyril Jaquier
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#
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# Pwhois modifications added by Robb Ballard <robb@pwhois.org>
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# See doc/README.pwhois for more information.
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#
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#
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[INCLUDES]
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before = sendmail-common.conf
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[Definition]
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# Option: actionstart
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# Notes.: command executed once at the start of Fail2Ban.
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# Values: CMD
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#
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actionstart = printf %%b "Subject: [Fail2Ban] <name>: started on `uname -n`
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Date: `LC_TIME=C date -u +"%%a, %%d %%h %%Y %%T +0000"`
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From: <sendername> <<sender>>
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To: <dest>\n
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Hi,\n
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The jail <name> has been started successfully.\n
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Regards,\n
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Fail2Ban" | /usr/sbin/sendmail -f <sender> <dest>
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# Option: actionstop
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# Notes.: command executed once at the end of Fail2Ban
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# Values: CMD
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#
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actionstop = printf %%b "Subject: [Fail2Ban] <name>: stopped on `uname -n`
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Date: `LC_TIME=C date -u +"%%a, %%d %%h %%Y %%T +0000"`
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From: <sendername> <<sender>>
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To: <dest>\n
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Hi,\n
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The jail <name> has been stopped.\n
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Regards,\n
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Fail2Ban" | /usr/sbin/sendmail -f <sender> <dest>
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# Option: actioncheck
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# Notes.: command executed once before each actionban command
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# Values: CMD
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#
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actioncheck =
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# Option: actionban
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# Notes.: command executed when banning an IP. Take care that the
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# command is executed with Fail2Ban user rights.
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# Tags: See jail.conf(5) man page
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# Values: CMD
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#
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actionban = printf %%b "Subject: [Fail2Ban] <name>: banned <ip> from `uname -n`
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Date: `LC_TIME=C date -u +"%%a, %%d %%h %%Y %%T +0000"`
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From: <sendername> <<sender>>
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To: <dest>\n
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Hi,\n
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The IP <ip> has just been banned by Fail2Ban after
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<failures> attempts against <name>.\n\n
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Here are more information about <ip>:\n
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`/usr/bin/whois -h whois.pwhois.org 'app="fail2ban:<name>" type=all <ip>'`\n\n
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Lines containing IP:<ip> in <logpath>\n
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`grep '\<<ip>\>' <logpath>`\n\n
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Regards,\n
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Fail2Ban" | /usr/sbin/sendmail -f <sender> <dest>
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# Option: actionunban
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# Notes.: command executed when unbanning an IP. Take care that the
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# command is executed with Fail2Ban user rights.
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# Tags: See jail.conf(5) man page
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# Values: CMD
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#
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actionunban =
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[Init]
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# Default name of the chain
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#
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name = default
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# Path to the log files which contain relevant lines for the abuser IP
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#
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logpath = /dev/null
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@ -0,0 +1,79 @@
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# Fail2Ban configuration file
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#
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# Author: Cyril Jaquier
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#
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# Pwhois modifications added by Robb Ballard <robb@pwhois.org>
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# See doc/README.pwhois for more information.
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#
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#
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[INCLUDES]
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before = sendmail-common.conf
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[Definition]
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# Option: actionstart
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# Notes.: command executed once at the start of Fail2Ban.
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# Values: CMD
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#
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actionstart = printf %%b "Subject: [Fail2Ban] <name>: started on `uname -n`
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Date: `LC_TIME=C date -u +"%%a, %%d %%h %%Y %%T +0000"`
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From: <sendername> <<sender>>
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To: <dest>\n
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Hi,\n
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The jail <name> has been started successfully.\n
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Regards,\n
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Fail2Ban" | /usr/sbin/sendmail -f <sender> <dest>
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# Option: actionstop
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# Notes.: command executed once at the end of Fail2Ban
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# Values: CMD
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#
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actionstop = printf %%b "Subject: [Fail2Ban] <name>: stopped on `uname -n`
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Date: `LC_TIME=C date -u +"%%a, %%d %%h %%Y %%T +0000"`
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From: <sendername> <<sender>>
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To: <dest>\n
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Hi,\n
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The jail <name> has been stopped.\n
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Regards,\n
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Fail2Ban" | /usr/sbin/sendmail -f <sender> <dest>
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# Option: actioncheck
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# Notes.: command executed once before each actionban command
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# Values: CMD
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#
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actioncheck =
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# Option: actionban
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# Notes.: command executed when banning an IP. Take care that the
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# command is executed with Fail2Ban user rights.
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# Tags: See jail.conf(5) man page
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# Values: CMD
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#
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actionban = printf %%b "Subject: [Fail2Ban] <name>: banned <ip> from `uname -n`
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Date: `LC_TIME=C date -u +"%%a, %%d %%h %%Y %%T +0000"`
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From: <sendername> <<sender>>
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To: <dest>\n
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Hi,\n
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The IP <ip> has just been banned by Fail2Ban after
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<failures> attempts against <name>.\n\n
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Here are more information about <ip>:\n
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`/usr/bin/whois -h whois.pwhois.org 'app="fail2ban:<name>" type=all <ip>'`\n
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Regards,\n
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Fail2Ban" | /usr/sbin/sendmail -f <sender> <dest>
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# Option: actionunban
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# Notes.: command executed when unbanning an IP. Take care that the
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# command is executed with Fail2Ban user rights.
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# Tags: See jail.conf(5) man page
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# Values: CMD
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#
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actionunban =
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[Init]
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# Default name of the chain
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#
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name = default
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Fail2ban Prefix Whois Modifications
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-----------------------------------
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We (the Prefix Whois folks) have been using fail2ban to protect various
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services, and over time we have found that whois doesn't always provide
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useful information without additional digging (see examples below). The
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modified action configuration files use whois.pwhois.org with the standard
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whois client installed on your operating system. The changes also include
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passing a parameter that indicates the query is coming from a fail2ban
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installation, as well as the service being blocked. We plan on making a
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blacklist with automatic age-outs built with this data available to the
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community in the future.
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Files:
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------
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action.d/complain-pwhois.conf
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action.d/sendmail-pwhois-lines.conf
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action.d/sendmail-pwhois.conf
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Example Whois Output:
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---------------------
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[whois.arin.net]
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#
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# ARIN WHOIS data and services are subject to the Terms of Use
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# available at: https://www.arin.net/whois_tou.html
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#
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#
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# Query terms are ambiguous. The query is assumed to be:
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# "n 142.54.168.146"
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#
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# Use "?" to get help.
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#
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#
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# The following results may also be obtained via:
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# http://whois.arin.net/rest/nets;q=142.54.168.146?showDetails=true&showARIN=false&ext=netref2
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#
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DataShack, LC DSV4-4 (NET-142-54-160-0-1) 142.54.160.0 - 142.54.191.255
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MMO Solution DS-168-146-150 (NET-142-54-168-144-1) 142.54.168.144 - 142.54.168.151
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#
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# ARIN WHOIS data and services are subject to the Terms of Use
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# available at: https://www.arin.net/whois_tou.html
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#
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Example Pwhois Output:
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----------------------
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[whois.pwhois.org]
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IP: 142.54.168.146
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Origin-AS: 33387
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Prefix: 142.54.160.0/19
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AS-Path: 1239 174 32097 33387
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AS-Org-Name: DataShack, LC
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Org-Name: MMO Solution
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Net-Name: DS-168-146-150
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Cache-Date: 1383626547
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Latitude: 39.147840
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Longitude: -94.568880
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City: KANSAS CITY
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Region: MISSOURI
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Country: UNITED STATES
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Country-Code: US
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AS-Org-Name-Source: ARIN
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Org-Name-Source: ARIN
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Net-Name-Source: ARIN
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Route-Create-Date: Aug 22 2012 00:01:25
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Route-Modify-Date: Nov 05 2013 00:01:21
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Next-Hop: 144.228.241.130
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Net-Range: 142.54.168.144 - 142.54.168.151
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Net-Type: reassignment
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Net-Register-Date: 2013-10-21
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Net-Update-Date: 2013-10-21
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Net-Create-Date: Sep 19 2013 01:51:07
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Net-Modify-Date: Nov 05 2013 01:53:22
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Org-Record: 0
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Org-ID: C04738597
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Org-Name: MMO Solution
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Can-Allocate: 0
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Street-1: 201 E. 16th st
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City: North Kansas City
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State: MO
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Postal-Code: 64116
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Country: US
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Register-Date: 2013-10-21
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Update-Date: 2013-10-21
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Create-Date: Oct 23 2013 01:52:34
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Modify-Date: Nov 05 2013 01:53:22
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