Router is ideal for enterprise-level Internet access for secure, high-speed corporate connectivity or IP telephony using broadband access such as DSL or cable. It includes one Ethernet WAN port, a integrated four-port Ethernet switch, a built-in firewall for network security, QoS to priority delay sensitive traffic like VoIP, DHCP to assign IP addresses, network address translation (NAT) to conceal private address, and IPSec VPN as well.