From the Manufacturer Big Security for Small Businesses -Unified Security Gateway ZyWALL USG20WThe ZyWALL USG50 is a Unified Security Gateway designed to provide complete, enterprise-level advanced security solutions to Small and Home Office networks, recommended for up to 10 PC users. Its flexible configuration is designed to help network administrators efficiently set up, manage, and enforce network security policies.The USG50 features a 180Mbps throughput ICSA certified SPI Firewall, and is designed with state of the art security features including a granular, easily manageable Content Filter; choice of ZyXEL or Kaspersky Anti-Virus; Anti-Spam; and IDP (Intrusion Detection and Prevention) for maximum network security. It also provides bandwidth management for QoS of VoIP, videoconferencing, and other important applications, as well as multiple-WAN Failover and Load Balancing. IPSec, SSL, and L2TP* VPN functionality allows telecommuters and home workers quick and easy access to corporate resources with most any device or network setup.Built with powerful Integrated High Performance Security architecture designed for Gigabit connections, a VPN throughput of 90Mbps, a UTM throughput of 24Mbps, up to 10,000 max sessions and 10 concurrent IPSec VPN tunnels, the USG50 has the power to monitor and protect even high-throughput networks without sacrificing performance.With 4x Gigabit LAN/DMZ and 2x Gigabit WAN interfaces you can load balance and failover multiple ISP links, allowing you to safeguard even the largest high-bandwidth environments.Comprehensive threat protection with firewall, VPN, anti-virus** content filtering** anti-spam, and intrusion detection and prevention**to secure networks against front line threats. Robust hybrid VPN (IPSec, SSL, and L2TP*) Easily connect with mobile devices IPv6 Support QoS options for latency-sensitive applications Compatible with Vantage Reporting and Management software30day trial of the antivirus software* Enabled by ZLD3.0 firmware upgrade** Yearly subscription required Flexible, secure VPN optionsThe USG50 is designed to allow secure VPN connections no matter what device or network settings are being used. IPSec VPN support allows secure connections to branch offices, partners, and headquarters; road warriors and telecommuters can use SSL to securely access the company network without having to install VPN software. Easy Mobile AccessThe new ZLD3.0 firmware upgrade enables L2TP support on all USG devices, making it easy for Android, iOS, and other mobile devices to establish VPN tunnels to remote networks directly from their native settings.Comprehensive frontline threat protectionThe USG50 employs a comprehensive suite of security systems to proactively protect networks from threats before they ever reach networked devices. ZyXEL’s anti-spam service eliminates spam, phishing, virus, and malware e-mail threats before they ever reach company inboxes while ensuring legitimate messages don’t get lost in the deluge. Administrators can choose between BlueCoat and Commtouch web filtering services to allow administrators to quickly and easily block websites both by category and by specific URL in order to protect networks from inappropriate web traffic, as well as to prevent viruses and spyware from forcing computers on a protected network to ‘phone home,’ saving bandwidth and preventing security breaches. ZyXEL’s signature-based Intrusion Detection and Prevention service allows network administrators granular control over the network functionality of specific applications while providing an added layer of defense from the most dangerous Trojans and backdoor applications on the internet today. With support for up to 2,500 signatures for the most common threats, IDP provides a powerful defense against threats to your network - both from the outside and from within. Gateway virus protection acts as a first line of defense from the worst viruses and malware on the internet. A 24/7 service