Nortel VPN Router 2700, 2000 tunnels. Routing protocols: OSPF, RIP-1, RIP-2, Data link protocols: Ethernet, Fast Ethernet, Management protocols: SNMP, HTTP. Authentication method: RADIUS, Security algorithms supported: 3DES, DES, MD5, RC4, SHA. Internal memory: 256 MB. Operating temperature range (T-T): 0 - 40 °C, Operating relative humidity range: 10 - 90 %. Weight: 12.7 kg