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# Fail2Ban filter for asterisk authentication failures
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#
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[INCLUDES]
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# Read common prefixes. If any customizations available -- read them from
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# common.local
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before = common.conf
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[Definition]
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_daemon = asterisk
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__pid_re = (?:\s*\[\d+\])
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iso8601 = \d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d+[+-]\d{4}
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# All Asterisk log messages begin like this:
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log_prefix= (?:NOTICE|SECURITY|WARNING)%(__pid_re)s:?(?:\[C-[\da-f]*\])?:? [^:]+:\d*(?:(?: in)? [^:]+:)?
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prefregex = ^%(__prefix_line)s%(log_prefix)s <F-CONTENT>.+</F-CONTENT>$
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failregex = ^Registration from '[^']*' failed for '<HOST>(:\d+)?' - (?:Wrong password|Username/auth name mismatch|No matching peer found|Not a local domain|Device does not match ACL|Peer is not supposed to register|ACL error \(permit/deny\)|Not a local domain)$
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^Call from '[^']*' \(<HOST>:\d+\) to extension '[^']*' rejected because extension not found in context
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^(?:Host )?<HOST> (?:failed (?:to authenticate\b|MD5 authentication\b)|tried to authenticate with nonexistent user\b)
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^No registration for peer '[^']*' \(from <HOST>\)$
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^hacking attempt detected '<HOST>'$
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^SecurityEvent="(?:FailedACL|InvalidAccountID|ChallengeResponseFailed|InvalidPassword)"(?:(?:,(?!RemoteAddress=)\w+="[^"]*")*|.*?),RemoteAddress="IPV[46]/[^/"]+/<HOST>/\d+"(?:,(?!RemoteAddress=)\w+="[^"]*")*$
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^"Rejecting unknown SIP connection from <HOST>(?::\d+)?"$
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^Request (?:'[^']*' )?from '(?:[^']*|.*?)' failed for '<HOST>(?::\d+)?'\s\(callid: [^\)]*\) - (?:No matching endpoint found|Not match Endpoint(?: Contact)? ACL|(?:Failed|Error) to authenticate)\s*$
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# FreePBX (todo: make optional in v.0.10):
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# ^(%(__prefix_line)s|\[\]\s*WARNING%(__pid_re)s:?(?:\[C-[\da-f]*\])? )[^:]+: Friendly Scanner from <HOST>$
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ignoreregex =
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datepattern = {^LN-BEG}
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# Author: Xavier Devlamynck / Daniel Black
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#
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# General log format - main/logger.c:ast_log
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# Address format - ast_sockaddr_stringify
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#
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# First regex: channels/chan_sip.c
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#
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# main/logger.c:ast_log_vsyslog - "in {functionname}:" only occurs in syslog
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journalmatch = _SYSTEMD_UNIT=asterisk.service
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[lt_journal]
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# asterisk can log timestamp if logs into systemd-journal (optional part matching this timestamp, gh-2383):
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__extra_timestamp = (?:\[[^\]]+\]\s+)?
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__prefix_line = %(known/__prefix_line)s%(__extra_timestamp)s
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