ZyXEL Prestige 660H-D1. DSL connection type: ADSL. Networking standards: IEEE 802.1d, Modem speed: 12000 Kbit/s. Routing protocols: ARP, ICMP, IGMP v1/v2, TCP, UDP, Management protocols: SNMP. Firewall security: DoS, DDoS, NAT functionality: SUA/Multi-NAT, VPN support: IPSec, PPTP. Certification: FCC, CE