Netgear ADSL Firewall Router. Routing protocols: DHCP, DNS, RIP, UDP. Firewall security: SPI, DoS protection, VPN support: VPN pass-through f IPsec, PPTP, & L2TP. Operating temperature range (T-T): 0 - 40 °C, Operating relative humidity range: 10 - 90 %. Weight: 0.3 kg. Compatible operating systems: Windows 95, 98, Me, NT, 2000, XP & all TCP/IP compatible