fail2ban/config/filter.d/named-refused.conf

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# Fail2Ban configuration file for named (bind9). Trying to generalize the
# structure which is general to capture general patterns in log
# lines to cover different configurations/distributions
#
# Author: Yaroslav Halchenko
#
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# $Revision: 699 $
#
[Definition]
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#
# Daemon name
_daemon=named
#
# Shortcuts for easier comprehension of the failregex
__pid_re=(?:\[\d+\])
__daemon_re=\(?%(_daemon)s(?:\(\S+\))?\)?:?
__daemon_combs_re=(?:%(__pid_re)s?:\s+%(__daemon_re)s|%(__daemon_re)s%(__pid_re)s?:)
# hostname daemon_id spaces
# this can be optional (for instance if we match named native log files)
__line_prefix=(?:\s\S+ %(__daemon_combs_re)s\s+)?
# Option: failregex
# Notes.: regex to match the password failures messages in the logfile.
# Values: TEXT
#
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failregex = %(__line_prefix)sclient <HOST>#\S+: query(?: \(cache\))? '.*' denied\s*$
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# Option: ignoreregex
# Notes.: regex to ignore. If this regex matches, the line is ignored.
# Values: TEXT
#
ignoreregex =