Protect Against Brute Force with ufw | ufw is the super easy firewall interface featured in Ubuntu and also the latest Debian. Somewhat like fail2ban, one feature of ufw is built-in rate limiting to protect against brute force attacks. While this could be used on any port, a common use is on port 22 to protect against ssh dictionary attacks or other
Prevent Postfix Brute Force
Prevent Postfix Brute Force | An often used attack vector is brute forcing MTA logins. While most admins watch ssh auth logs like a hawk, email auth/login logs are most often not closely watched for this sort of thing if at all. I’ll show you one way to easily prevent a Postfix brute force attack! This how-to focuses on fail2ban
