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114 lines
3.1 KiB
114 lines
3.1 KiB
# Fail2Ban configuration file
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#
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# Author: Andrew St. Jean
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#
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# Use nsupdate to perform dynamic DNS updates on a BIND zone file.
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# One may want to do this to update a local RBL with banned IP addresses.
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#
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# Options
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#
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# domain DNS domain that will appear in nsupdate add and delete
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# commands.
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#
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# ttl The time to live (TTL) in seconds of the TXT resource
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# record.
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#
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# rdata Data portion of the TXT resource record.
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#
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# nsupdatecmd Full path to the nsupdate command.
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#
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# keyfile Full path to TSIG key file used for authentication between
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# nsupdate and BIND.
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#
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# Create an nsupdate.local to set at least the <domain> and <keyfile>
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# options as they don't have default values.
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#
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# The ban and unban commands assume nsupdate will authenticate to the BIND
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# server using a TSIG key. The full path to the key file must be specified
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# in the <keyfile> parameter. Use this command to generate your TSIG key.
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#
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# dnssec-keygen -a HMAC-MD5 -b 256 -n HOST <key_name>
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#
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# Replace <key_name> with some meaningful name.
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#
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# This command will generate two files. Specify the .private file in the
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# <keyfile> option. Note that the .key file must also be present in the same
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# directory for nsupdate to use the key.
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#
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# Don't forget to add the key and appropriate allow-update or update-policy
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# option to your named.conf file.
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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 = echo <ip> | awk -F. '{print "prereq nxrrset "$4"."$3"."$2"."$1".<domain> TXT"; print "update add "$4"."$3"."$2"."$1".<domain> <ttl> IN TXT \"<rdata>\""; print "send"}' | <nsupdatecmd> -k <keyfile>
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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 = echo <ip> | awk -F. '{print "update delete "$4"."$3"."$2"."$1".<domain>"; print "send"}' | <nsupdatecmd> -k <keyfile>
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[Init]
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# Option: domain
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# Notes.: DNS domain that nsupdate will update.
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# Values: STRING
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#
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domain =
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# Option: ttl
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# Notes.: time to live (TTL) of TXT resource record added by nsupdate.
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# Values: NUM
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#
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ttl = 600
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# Option: rdata
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# Notes.: data portion of the TXT resource record added by nsupdate.
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# Values: STRING
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#
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rdata = Your IP has been banned
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# Option: nsupdatecmd
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# Notes.: specifies the full path to the nsupdate program that dynamically
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# updates BIND zone files.
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# Values: CMD
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#
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nsupdatecmd = /usr/bin/nsupdate
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# Option: keyfile
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# Notes.: specifies the full path to the file containing the
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# TSIG key for communicating with BIND.
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# Values: STRING
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#
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keyfile =
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