mirror of https://github.com/fail2ban/fail2ban
36 lines
1.7 KiB
Plaintext
36 lines
1.7 KiB
Plaintext
# Fail2Ban filter Dovecot authentication and pop3/imap server
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#
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[INCLUDES]
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before = common.conf
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[Definition]
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_auth_worker = (?:dovecot: )?auth(?:-worker)?
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_daemon = (?:dovecot(?:-auth)?|auth)
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__prefregex = ^%(__prefix_line)s(?:%(_auth_worker)s(?:\([^\)]+\))?: )?(?:%(__pam_auth)s(?:\(dovecot:auth\))?: |(?:pop3|imap)-login: )?(?:Info: )?
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failregex = ^%(__prefregex)sauthentication failure; logname=\S* uid=\S* euid=\S* tty=dovecot ruser=\S* rhost=<HOST>(?:\s+user=\S*)?\s*$
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^%(__prefregex)s(?:Aborted login|Disconnected)(?::(?: [^ \(]+)+)? \((?:auth failed, \d+ attempts(?: in \d+ secs)?|tried to use (?:disabled|disallowed) \S+ auth)\):(?: user=<[^>]*>,)?(?: method=\S+,)? rip=<HOST>(?:[^>]*(?:, session=<\S+>)?)\s*$
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^%(__prefregex)spam\(\S+,<HOST>(?:,\S*)?\): pam_authenticate\(\) failed: (?:User not known to the underlying authentication module: \d+ Time\(s\)|Authentication failure \(password mismatch\?\)|Permission denied)\s*$
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^%(__prefregex)s[a-z\-]{3,15}\(\S*,<HOST>(?:,\S*)?\): (?:unknown user|invalid credentials)\s*$
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ignoreregex =
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[Init]
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journalmatch = _SYSTEMD_UNIT=dovecot.service
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# DEV Notes:
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# * the first regex is essentially a copy of pam-generic.conf
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# * Probably doesn't do dovecot sql/ldap backends properly (resolved in edit 21/03/2016)
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# * Removed the 'no auth attempts' log lines from the matches because produces
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# lots of false positives on misconfigured MTAs making regexp unusable
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#
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# Author: Martin Waschbuesch
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# Daniel Black (rewrote with begin and end anchors)
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# Martin O'Neal (added LDAP authentication failure regex)
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# Sergey G. Brester aka sebres (reviewed, optimized, IPv6-compatibility)
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