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install fail2ban from slackbuilds.org
copy jail.conf to jail.local
cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local
open jail.local
nano /etc/fail2ban/jail.local
scroll down to the section [SSHD]
[sshd]
# To use more aggressive sshd modes set filter parameter “mode” in jail.local: # normal (default), ddos, extra or aggressive (combines all). # See “tests/files/logs/sshd” or “filter.d/sshd.conf” for usage example and details. #mode = normal
logpath = /var/log/secure backend = auto enabled = true port = ssh 2200 filter = sshd maxretry = 2 findtime = 300 bantime = 86400 ignoreip = 127.0.0.1 192.168.0.*