Editing fail2ban page?

[Robert Kudyba]

> On Apr 9, 2019, at 9:03 AM, Mauricio Tavares via dovecot <dovecot at dovecot.org> wrote:
> 
> In https://urldefense.proofpoint.com/v2/url?u=https-3A__wiki.dovecot.org_HowTo_Fail2Ban&d=DwIBaQ&c=aqMfXOEvEJQh2iQMCb7Wy8l0sPnURkcqADc2guUW8IM&r=X0jL9y0sL4r4iU_qVtR3lLNo4tOL1ry_m7-psV3GejY&m=pvPczF9hPXSNtmAKNFK4BCXvgxuaUKHd2Ur3lh4S7qQ&s=_kg3Hgc3N8Dk4K_fGw94IDAeC1tvlMTQ9w3Ocfzm3Ts&e=, for a current (I know for
> a fact in 2.2.36) I believe it should be
> 
> filter = dovecot
> 
> instead of
> 
> filter = dovecot-pop3imap
> 
> [root at mail ~]# ls -l /etc/fail2ban/filter.d/doveco*
> 
> -rw-r--r-- 1 root root 1875 May 11  2017 /etc/fail2ban/filter.d/dovecot.conf

I believe that’s a different jail:

diff /etc/fail2ban/filter.d/dovecot-pop3imap.conf /etc/fail2ban/filter.d/dovecot.conf 
0a1,7
> # Fail2Ban filter Dovecot authentication and pop3/imap server
> #
> 
> [INCLUDES]
> 
> before = common.conf
> 
2,3c9,47
< failregex = (?: pop3-login|imap-login): .*(?:Authentication failure|Aborted login \(auth failed|Aborted login \(tried to use disabled|Disconnected \(auth failed|Aborted login \(\d+ authentication attempts).*rip=`<HOST>`
< ignoreregex =
---
> 
> _auth_worker = (?:dovecot: )?auth(?:-worker)?
> _daemon = (?:dovecot(?:-auth)?|auth)
> 
> prefregex = ^%(__prefix_line)s(?:%(_auth_worker)s(?:\([^\)]+\))?: )?(?:%(__pam_auth)s(?:\(dovecot:auth\))?: |(?:pop3|imap)-login: )?(?:Info: )?<F-CONTENT>.+</F-CONTENT>$
> 
> failregex = ^authentication failure; logname=<F-ALT_USER1>\S*</F-ALT_USER1> uid=\S* euid=\S* tty=dovecot ruser=<F-USER>\S*</F-USER> rhost=<HOST>(?:\s+user=<F-ALT_USER>\S*</F-ALT_USER>)?\s*$
>             ^(?:Aborted login|Disconnected)(?::(?: [^ \(]+)+)? \((?:auth failed, \d+ attempts(?: in \d+ secs)?|tried to use (?:disabled|disallowed) \S+ auth|proxy dest auth failed)\):(?: user=<<F-USER>[^>]*</F-USER>>,)?(?: method=\S+,)? rip=<HOST>(?:[^>]*(?:, session=<\S+>)?)\s*$
>             ^pam\(\S+,<HOST>(?:,\S*)?\): pam_authenticate\(\) failed: (?:User not known to the underlying authentication module: \d+ Time\(s\)|Authentication failure \(password mismatch\?\)|Permission denied)\s*$
>             ^[a-z\-]{3,15}\(\S*,<HOST>(?:,\S*)?\): (?:unknown user|invalid credentials|Password mismatch)\s*$
>             <mdre-<mode>>
> 
> mdre-aggressive = ^(?:Aborted login|Disconnected)(?::(?: [^ \(]+)+)? \((?:no auth attempts|disconnected before auth was ready,|client didn't finish \S+ auth,)(?: (?:in|waited) \d+ secs)?\):(?: user=<[^>]*>,)?(?: method=\S+,)? rip=<HOST>(?:[^>]*(?:, session=<\S+>)?)\s*$
> 
> mdre-normal = 
> 
> # Parameter `mode` - `normal` or `aggressive`.
> # Aggressive mode can be used to match log-entries like:
> #   'no auth attempts', 'disconnected before auth was ready', 'client didn't finish SASL auth'.
> # Note it may produce lots of false positives on misconfigured MTAs.
> # Ex.:
> # filter = dovecot[mode=aggressive]
> mode = normal
> 
> ignoreregex = 
> 
> journalmatch = _SYSTEMD_UNIT=dovecot.service
> 
> datepattern = {^LN-BEG}TAI64N
>               {^LN-BEG}
> 
> # DEV Notes:
> # * the first regex is essentially a copy of pam-generic.conf
> # * Probably doesn't do dovecot sql/ldap backends properly (resolved in edit 21/03/2016)
> #
> # Author: Martin Waschbuesch
> #         Daniel Black (rewrote with begin and end anchors)
> #         Martin O'Neal (added LDAP authentication failure regex)
> #         Sergey G. Brester aka sebres (reviewed, optimized, IPv6-compatibility)


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