SSHGuard.org

SSHGuard

Installation

sudo apt-get install -y sshguard
sudo systemctl start sshguard
sudo systemctl status sshguard
sudo systemctl enable sshguard

Config

sudo iptables -N sshguard      # for IPv4
sudo ip6tables -N sshguard     # for IPv6

sudo iptables -I INPUT -j sshguard
sudo ip6tables -I INPUT -j sshguard
sudo vi /etc/iptables/rules.v4
sudo vi /etc/iptables/rules.v6
sudo iptables-restore </etc/iptables/rules.v4
sudo ip6tables-restore </etc/iptables/rules.v6

*filter

:sshguard - [0:0]
-A INPUT -j sshguard