The 5 WAN ports on the Vigor 3900 can provide load balancing, WAN failover or bandwidth aggregation (increasing total bandwidth onto the Internet). Based on a new DrayTek OS platform, the Vigor 3900 combines high performance and capacity with DrayTek's traditional ease of use and comprehensive features set.

Features:

1. Professional Router/Firewall
2. Native IPv4 & IPv6 support
3. Four Gigabit Ethernet WAN ports
4. Gigabit SFP Mopdule WAN Port
5. Two Gigabit LAN prts
6. Gigabit SFP Mopdule LAN Port
7. WAN Load Balancing & WAN Failover
8. High-Availability
9. Two Independent USB Ports
10. VPN Concentrator for branch or teleworkers
11. Up to 500 simultaneous IPSec/PPTP/L2TP Tunnels
12. SSL VPN for up to 200 Web-Proxy clients
13. 802.1q Tagged and port-based VLANs
14. QoS Assurance on different traffic types
15. Mobile One-Time Passwords for Teleworker VPNs
16. VPN Trunking (aggregated/failover links)
17. Multiple LAN-side private IP subnets
18. Internet Content Filtering