Nortel Business Secure Router 222. Management protocols: SNMP, FTP, Telnet, Web. Authentication method: 802.1x/EAP, RADIUS, Security algorithms supported: IPSEC, NAT functionality: Traversal. Flash memory: 64 MB, Internal memory: 32 MB. Operating temperature range (T-T): 0 - 50 °C, Operating relative humidity range: 0 - 90 %, Operating altitude: 0 - 3050 m. Weight: 400 g