Only few fast tips to make your ssh connection more secured
- Change ssh port
- Install ssh guard
Edit file /etc/ssh/sshd_config
# What ports, IPs and protocols we listen for #Port 22 Port 22222
Then restart ssh /etc/init.d/ssh restart. Done – standard bots will be no able to find this port, or it will take more time.
Install sshguard – it will temporary block IP which make few failed login.
apt-get update && apt-get install -y sshguard iptables -N sshguard ip6tables -N sshguard iptables -A INPUT -j sshguard ip6tables -A INPUT -j sshguard