Instalar Fail2Ban
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INSTALAR FAIL2BAN
sudo apt install fail2ban -y
CONFIGURARAR FAIL2BAN.
sudo nano /etc/fail2ban/jail.conf
BUSCAMOS EL SSH servers CON CTRL + W.
#port = ssh bantime = 86400 port = 10022 logpath = %(sshd_log)s backend = %(sshd_backend)s maxretry = 3
GUARDAMOS CTRL + X.
REINICIAMOS EL SERVICIO.
sudo systemctl restart fail2ban.service