fail2ban/config/filter.d/proftpd.conf

# Fail2Ban configuration file
#
# Author: Yaroslav Halchenko
#         Daniel Black - hardening of regex
#

[INCLUDES]

# Read common prefixes. If any customizations available -- read them from
# common.local
before = common.conf


[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
#
failregex = ^ %(__hostname)s %(__daemon_re)s%(__pid_re)s %(__hostname)s \(\S+\[<HOST>\]\)[: -]+ USER .*: no such user found from \S+ \[\S+\] to \S+:\S+ *$
            ^ %(__hostname)s %(__daemon_re)s%(__pid_re)s %(__hostname)s \(\S+\[<HOST>\]\)[: -]+ USER .* \(Login failed\): .*$
            ^ %(__hostname)s %(__daemon_re)s%(__pid_re)s %(__hostname)s \(\S+\[<HOST>\]\)[: -]+ SECURITY VIOLATION: .* login attempted\. *$
            ^ %(__hostname)s %(__daemon_re)s%(__pid_re)s %(__hostname)s \(\S+\[<HOST>\]\)[: -]+ Maximum login attempts \(\d+\) exceeded *$

# Option:  ignoreregex
# Notes.:  regex to ignore. If this regex matches, the line is ignored.
# Values:  TEXT
#
ignoreregex =