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Server IP : 20.75.53.88 / Your IP : 216.73.217.165 [ Reverse IP ]
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User : www-data ( 33)
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Directory : /etc/fail2ban/filter.d/

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Current File : /etc/fail2ban/filter.d/named-refused.conf

# Fail2Ban filter file for named (bind9).
#

# This filter blocks attacks against named (bind9) however it requires special
# configuration on bind.
#
# By default, logging is off with bind9 installation.
#
# You will need something like this in your named.conf to provide proper logging.
#
# logging {
#     channel security_file {
#         file "/var/log/named/security.log" versions 3 size 30m;
#         severity dynamic;
#         print-time yes;
#     };
#     category security {
#         security_file;
#     };
# };

[Definition]

# 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+)?

failregex = ^%(__line_prefix)s(\.\d+)?( error:)?\s*client <HOST>#\S+( \([\S.]+\))?: (view (internal|external): )?query(?: \(cache\))? '.*' denied\s*$
            ^%(__line_prefix)s(\.\d+)?( error:)?\s*client <HOST>#\S+( \([\S.]+\))?: zone transfer '\S+/AXFR/\w+' denied\s*$
            ^%(__line_prefix)s(\.\d+)?( error:)?\s*client <HOST>#\S+( \([\S.]+\))?: bad zone transfer request: '\S+/IN': non-authoritative zone \(NOTAUTH\)\s*$

# DEV Notes:
# Trying to generalize the
#          structure which is general to capture general patterns in log
#          lines to cover different configurations/distributions
#          
# (\.\d+)? is a really ugly catch of the microseconds not captured in the date detector
#
# Author: Yaroslav Halchenko

Anon7 - 2022
AnonSec Team