As business grows & network expands, more & more users & devices as well as new applications like cloud-based services would join the network. It means that high network availability for sustainable business, more workplace Wi-Fi & up-to-date regulations for application usages are eagerly needed. Without an effective solution to control, optimize or block social & some other Web applications, businesses would risk not only losing productivity but also exposing company network to new threats. The Zy XEL USG Extreme Series are Next Generation Firewalls (NGFW) designed to deliver high availability, anti-malware protection & consolidated policy enforcement for medium-to large-sized businesses & campuses. The Zy XEL USGs provides WAN & VPN load balancing & failover ensures nonstop business communications, while incorporating bestin-breed anti-virus, anti-spam, content filtering & application intelligence technology for effective application optimization & comprehensive network protection.