FAIL2BAN-REGEX

Section: User Commands (1)
Updated: October 2018
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NAME

fail2ban-regex - test Fail2ban "failregex" option

SYNOPSIS

fail2ban-regex [,OPTIONS/] ,<LOG> <REGEX> /[,IGNOREREGEX/]

DESCRIPTION

Fail2Ban reads log file that contains password failure report and bans the corresponding IP addresses using firewall rules.

This tools can test regular expressions for "fail2ban".

LOG:

string: a string representing a log line
filename: path to a log file (,/var/log/auth.log/)
"systemd-journal": search systemd journal (systemd-python required)

REGEX:

string: a string representing a 'failregex'
filename: path to a filter file (filter.d/sshd.conf)

IGNOREREGEX:

string: a string representing an 'ignoreregex'
filename: path to a filter file (filter.d/sshd.conf)

OPTIONS

--version: show program's version number and exit
-h, --help: show this help message and exit
-c CONFIG, --config=,CONFIG/: set alternate config directory
-d DATEPATTERN, --datepattern=,DATEPATTERN/: set custom pattern used to match date/times
--timezone=,TIMEZONE/, --TZ=,TIMEZONE/: set time-zone used by convert time format
-e ENCODING, --encoding=,ENCODING/: File encoding. Default: system locale
-r, --raw: Raw hosts, don't resolve dns
--usedns=,USEDNS/: DNS specified replacement of tags <HOST> in regexp ('yes' - matches all form of hosts, 'no' - IP addresses only)
-L MAXLINES, --maxlines=,MAXLINES/: maxlines for multi-line regex.
-m JOURNALMATCH, --journalmatch=,JOURNALMATCH/: journalctl style matches overriding filter file. "systemd-journal" only
-l LOG_LEVEL, --log-level=,LOG_LEVEL/: Log level for the Fail2Ban logger to use
-V: get version in machine-readable short format
-v, --verbose: Increase verbosity
--verbosity=,VERBOSE/: Set numerical level of verbosity (0..4)
--verbose-date, --VD: Verbose date patterns/regex in output
-D, --debuggex: Produce debuggex.com urls for debugging there
--print-no-missed: Do not print any missed lines
--print-no-ignored: Do not print any ignored lines
--print-all-matched: Print all matched lines
--print-all-missed: Print all missed lines, no matter how many
--print-all-ignored: Print all ignored lines, no matter how many
-t, --log-traceback: Enrich log-messages with compressed tracebacks
--full-traceback: Either to make the tracebacks full, not compressed (as by default)

AUTHOR

Written by Cyril Jaquier <cyril.jaquier@fail2ban.org>. Many contributions by Yaroslav O. Halchenko and Steven Hiscocks.

REPORTING BUGS

Report bugs to https://github.com/fail2ban/fail2ban/issues