Cisco 1721 VPN Router Specs: 11.2 in x 8.7 in x 3.1 in, Wired, Ethernet, Fast Ethernet, Ethernet, RMON, SNMP, Telnet, IEEE 802.3, IEEE 802.1Q, IEEE 802.3u, Full-duplex, Half-duplex, External, IP-routing, Manageable, NAT support, VPN support, DHCP support, VLAN support, Modular design, Traffic shaping, Auto-negotiation, Firewall protection, DoS attack prevention, Full duplex capability, Auto-sensing per device, Low-latency queuing (LLQ), Weighted Fair Queuing (WFQ), Stateful Packet Inspection (SPI), Access Control List (ACL) support, 0, 2.6 lbs