fail2ban/config/filter.d/sshd-ddos.conf

# Fail2Ban ssh filter for at attempted exploit
#
# The regex here also relates to a exploit:
#
#  http://www.securityfocus.com/bid/17958/exploit
#  The example code here shows the pushing of the exploit straight after
#  reading the server version. This is where the client version string normally
#  pushed. As such the server will read this unparsible information as
#  "Did not receive identification string".

[INCLUDES]

before = sshd.conf

[Definition]

mode = %(ddos)s