Intelligent Hillstone Networks T-Series Next Generation Firewalls provide superior real-time protection for applications and against network attacks. They provide protection against viruses, spyware, worms, botnets, ARP spoofing, DoS/DDoS attacks, Trojans, etc. Compared to the E-Series, Intelligent Hillstone Networks T-Series Next Generation Firewalls use three key technologies for the highest possible security - Advanced Threat Detection (ATD), Abnormal Behavior Detection (ABD) and an analytics engine that evaluates results from all security modules (ATD, ABD, Sandbox, IPS, AV).