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Fix broken fail2ban dovecot filter; use <HOST> instead of undocumented feature. 

* Replace deprecated, undocumented fail2ban feature "(\P<host>\S*)" with
  supported host match "<HOST>".
* Fixes "No failure-id group in '(?: pop3-login|ima ..." fail2ban dovecot filter
  error message.
* See: https://github.com/fail2ban/fail2ban/issues/2130
This commit is contained in:
Robert Pufky 2020-02-01 14:57:03 -08:00 committed by Erik Wramner
parent d03f9c8b8d
commit d3f7c56cdf
1 changed files with 2 additions and 2 deletions
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4
target/fail2ban/filter.d/dovecot.conf
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@ -10,7 +10,7 @@ failregex = ^%(__prefix_line)s(pam_unix(\(dovecot:auth\))?:)?\s+authentication f
^%(__prefix_line)s(pop3|imap)-login: (Info: )?(Aborted login|Disconnected)(: Inactivity)? \(((no auth attempts|auth failed, \d+ attempts)( in \d+ secs)?|tried to use (disabled|disallowed) \S+ auth)\):( user=<\S*>,)?( method=\S+,)? rip=<HOST>, lip=(\d{1,3}\.){3}\d{1,3}(, session=<\w+>)?(, TLS( handshaking)?(: Disconnected)?)?\s*$
^%(__prefix_line)s(Info|dovecot: auth\(default\)): pam\(\S+,<HOST>\): pam_authenticate\(\) failed: (User not known to the underlying authentication module: \d+ Time\(s\)|Authentication failure \(password mismatch\?\))\s*$
^\s.*passwd-file\(\S*,<HOST>\): unknown user.*$
(?: pop3-login|imap-login): .*(?:Authentication failure|Aborted login \(auth failed|Aborted login \(tried to use disabled|Disconnected \(auth failed).*rip=(?P<host>\S*),.*
(?: pop3-login|imap-login): .*(?:Authentication failure|Aborted login \(auth failed|Aborted login \(tried to use disabled|Disconnected \(auth failed).*rip=(<HOST>),.*
## ^%(__prefix_line)spasswd-file\(\S*,<HOST>\): unknown user.*$
ignoreregex =
ignoreregex =