built-in adsl 2/2+ modem, 802.11n draft 2.4ghz & 4-port 10/100mbps switch ip router/broadband internet gateway & hardware firewall security features vpn support: pptp/l2tp/ipsec pass-through network address/ port translation (napt) dos (udp/tcp), detection of known attacks stateful packet inspection (spi) built-in quality of service (qos) admin / configuration through web browser