D-Link Enterprise Business Firewall with Zone-Defense. Data transfer rate (max): 1000 Mbit/s, Firewall throughput: 600 Mbit/s, VPN throughput: 300 Mbit/s. Number of users: 1000 user(s). Connectivity technology: Wired. Management protocols: SNMP v1, v2c, Supported network protocols: PPPoE, NAT, PAT. Security algorithms supported: 3DES, AES, Blowfish, DES, Twofish