The Vigor2820n is an ADSL2+ router with a 2nd Ethernet WAN. The 2nd WAN can be used to connect to DSL/Cable modem or fiber media converter for policy-based load-balance, fail-over and BoD. It also features advanced bandwidth control mechanisms such as IP-layer QoS, NAT Session Limitation, Bandwidth Borrowed, and more to allow easy, flexible and reliable access control and bandwidth management. With hardware-based implementation of the VPN protocol, the Vigor2820n supports up to 32 VPN tunnels using advanced protocols such as IPSec / PPTP / L2TP / L2TP over IPSec with AES / DES / 3DES for encryption and MD5 / SHA-1 for authentication. The SPI firewall uses Object-Based design to make setting of firewall policies easy. The CSM feature allows more precise and efficient access control for URL / Web Content Filtering, IM and P2P applications. Vigor2820n model complie with IEEE802.11n standards. They support WEP / WPA / WPA2, encryption and MAC Address Control, Wireless LAN Isolation, Multi SSID and 802.1x authentication. The Wireless Rate Control function can adjust the data rate of each wireless station (client). WDS can help users to extend wireless coverage easily.