The WRVS4400N 4-Port N Gigabit Security Router with VPN from Linksys offers enhanced firewall, encryption and authentication features to protect you from network threats. The WRVS4400N implements draft 802.11n (Wireless-N) technology with a Virtual Private Network (VPN) Router that features a built-in 4-port full-duplex 10/100/1000 Gigabit Ethernet switch. By overlaying the signals of multiple radios, Wireless-N's Multiple In, Multiple Out (MIMO) technology multiplies the effective data rate resulting in greater throughput and coverage over 802.11g. At the same time, Wireless-N is backwards compatible with Wireless-B and G devices. The WRVS4400N has incorporated enhanced firewall and intrusion protection (IPS) features to secure your network from external threats - threats that can seriously disrupt or damage your business by stealing your valuable data, slowing down your network and interfering with business-critical applications. The VPN tunnels give your mobile workers a secure and easy to use way to stay connected. In addition, the VPN gateway-to-gateway IPSec tunnels facilitate branch office connectivity through encrypted virtual links. Compliant Standards - Full duplex capability, firewall protection, auto-sensing per device, dynamic IP address assignment, DHCP support, NAT support, VPN, PAT support, auto-negotiation, Syslog support, Stateful Packet In IPSec VPN Tunneling, Built in Web UI, IDS/IPS Network Intrusion Detection and Protection Services, User Definable Access Control Lists, QoS Support Data Link Protocol - Ethernet, Fast Ethernet, Gigabit Ethernet, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n (draft) 300 Mbps System Requirements - Network Adapter With Ethernet Network Cable and TCP/IP Protocol Installed Per PC, Web-Based Configuration Java/Cookies/SSL-Enabled Web Browser MD5, 128-bit WEP, 64-bit WEP, SHA-1, PEAP, WPA2, WPA-PSK Line Coding Format Routing Protocol Dimensions - Width 7.8 x Dep