interface: adsl: rj-11 connector to phone line) rj45 - 1 x 10/100mbps ethernet (with auto mdi/mdix) security : vpn support: pptp/l2tp/ipsec pass-through network address/ port : translation (napt) dos (udp/tcp), detection of know attacks id password authentication , spi data rates(adsl stds):g.dmt downstream:upto 8mbps; g.dmt upstream: upto 1mb g.lite downstream:upto 1.5 mbps;g.lite upstream:up to 512 kbps dsl-2: upto 12mbps down; dsl-2+: upto 25mbps down(isp dept) protocol support: bridged ethernet over atm ; ppp over atm classical ip over atm ; ppp over ethernet mgmt:built-in snmp-based mibs;tftp & http firmware upg;telnet supp upnp 1.0 configuration : web-based ; install wizard ; config backup & restore dimensions : 192 x 116 x 30mm adsl standards : ansi t1.413 issue 2 (full rate dmt analog pots) itu g.992.1(g.dmt) annex a signaling: atm signalling : uni 3.0, 3.1 and 4.0 precise atm traffic shaping