D-Link Wireless N 300 Cloud Router DIR-619L delivers Internet sharing, local area network connectivity and security in a single device. The DIR-619L has a 10/100 WAN port for connection to Cable or xDSL modem. The four-port 10/100 Ethernet switch along with the built-in 802.11 b/g/n wireless access point provides network connectivity to multiple machines in the Local Area Network (LAN). Supporting Network Address Translation (NAT) allows multiple users to connect to the Internet by sharing a single IP address. The built-in DHCP server assigns IP address to internal hosts on your network. External access to the internal machine such as web server can be achieved by the DMZ host and Dynamic DNS functions. Additional security functions are provided by the Stateful Packet Inspection (SPI) firewall on network traffic and URL and domain filtering for web content.