under another kind of attack

[Olaf Hopp]

On 07/29/2017 01:34 PM, Davide Marchi wrote:
> Hi to all,
> 
> @Olaf Hopp I've this filter enabled for fail2ban, my question is: could my filters overlap or interfere with those suggested by you?
> 
> this is my filter:
> 

Davide,
yours is all postfix and thus has got no overlap with dovecot.
So no interference.
Olaf

> 
> Contents of /etc/fail2ban/jail.conf:
> 
> [postfix]
> # Ban for 10 minutes if it fails 6 times within 10 minutes
> enabled  = true
> port     = smtp,ssmtp
> filter   = postfix
> logpath  = /var/log/mail.log
> maxretry = 6
> bantime  = 600
> findtime = 600
> 
> Contents of /etc/fail2ban/filter.d/postfix.conf:
> 
> # Fail2Ban configuration file
> # Author: Cyril Jaquier
> # $Revision$
> 
> [Definition]
> 
> # Option:  failregex
> # Notes.:  regex to match the password failures messages in the logfile. The
> #          host must be matched by a group named "host". The tag "<HOST>" can
> #          be used for standard IP/hostname matching and is only an alias for
> #          (?:::f{4,6}:)?(?P<host>[\w\-.^_]+)
> # Values:  TEXT
> #
> 
> # Jul 11 02:35:08 mail postfix/smtpd[16299]: lost connection after AUTH from unknown[196.12.178.73]
> 
> failregex = lost connection after AUTH from unknown\[<HOST>\]
> 
> # Option:  ignoreregex
> # Notes.:  regex to ignore. If this regex matches, the line is ignored.
> # Values:  TEXT
> #
> ignoreregex =
> 
> 
> Many thanks!


-- 
Karlsruher Institut für Technologie (KIT)
ATIS - Abt. Technische Infrastruktur, Fakultät für Informatik

Dipl.-Geophys. Olaf Hopp
- Leitung IT-Dienste -

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