HOWTO fail2ban with qpopper

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Revision as of 18:57, 15 December 2011 by Mikes (Talk | contribs) (updated regex)

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Configuration for qpopper pop3 daemon is done through the following: (this setup was for openSUSE 10.2)

  • First make an entry into your jail.conf file.
[qpopper]
enabled  = true
port     = pop3
filter   = qpopperlogin
action   = iptables[name=%(__name__)s, port=%(port)s]
           sendmail-whois[name=qpopper, dest=you@mail.com]
logpath  = /var/log/mail
maxretry = 5
  • Then create a file in filter.d directory called qpopperlogin.conf The first failregex statement was sent to the fail2ban mail list by Sven Neukirchner.
[Definition]

failregex = popper\[[0-9]+\]:\s\[AUTH\]\sFailed\sattempted\slogin\sto\s\S+\sfrom\shost\s(\S+)\s<HOST>(?:\s\[pop_pass\.c.*\])?$
            popper\[[0-9]+\]:.*\(<HOST>\):\ -ERR\ \[AUTH\]\
ignoreregex =