Fail2ban

Install

• sudo apt install fail2ban

Config

• sudo cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local

Example ssh

[sshd]
enabled    = true
port    = ssh
filter    = sshd
logpath    = /var/log/auth.log
maxretry = 4

Links

• https://www.thomas-krenn.com/de/wiki/SSH_Login_unter_Debian_mit_fail2ban_absichern