The software "fail2ban" is similar to DenyHosts but more general as it is not only intended for SSHD protection.
Installation
On Debian-based system, issue the command:
sudo apt-get install fail2ban -y
On Fedora-based system, issue the command:
sudo dnf install fail2ban -y
Configuration
The following sample configuration for SSHD are as follows (/etc/fail2ban/):
[sshd]
enabled = true
port = ssh
filter = sshd
logpath = /var/log/auth.log
maxretry = 3
findtime = 300
bantime = 28800
ignoreip = 127.0.0.1
