The best Firewall alternative to Anti DDoS Guardian is AiP Defense. If that doesn't work for you, our users have ranked eight alternatives to Anti DDoS Guardian, but unfortunately only two of them are Firewalls.
Your Microsoft Windows servers are probably under constant attack and you may not even know it! Chances are if your hosting remote desktop, or other services such as Microsoft exchange, FTP, HTTP, HTTP’s or SQL. Your server is likely getting bombarded with failed login attempts.
mobileFX Spartan RDP Guard is an intrusion detection system (IDS) and host-based intrusion prevention system (HIPS) implemented as a Windows 64-bit or 32-bit Service with location-based attack reporting and instant notifications.
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