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# Fail2Ban fitler for the Proftpd FTP daemon## Set "UseReverseDNS off" in proftpd.conf to avoid the need for DNS.# See: http://www.proftpd.org/docs/howto/DNS.html[INCLUDES]before = common.conf[Definition]_daemon = proftpd__suffix_failed_login = (User not authorized for login|No such user found|Incorrect password|Password expired|Account disabled|Invalid shell: '\S+'|User in \S+|Limit (access|configuration) denies login|Not a UserAlias|maximum login length exceeded).?failregex = ^%(__prefix_line)s%(__hostname)s \(\S+\[<HOST>\]\)[: -]+ USER .*: no such user found from \S+ \[\S+\] to \S+:\S+ *$^%(__prefix_line)s%(__hostname)s \(\S+\[<HOST>\]\)[: -]+ USER .* \(Login failed\): %(__suffix_failed_login)s\s*$^%(__prefix_line)s%(__hostname)s \(\S+\[<HOST>\]\)[: -]+ SECURITY VIOLATION: .* login attempted\. *$^%(__prefix_line)s%(__hostname)s \(\S+\[<HOST>\]\)[: -]+ Maximum login attempts \(\d+\) exceeded *$ignoreregex =# Author: Yaroslav Halchenko# Daniel Black - hardening of regex