534.3 WAN4.3.1 Internet ConnectionThe Internet Connection screen allows you to configure thesettings of various WAN connection types.4.3.1.1 WANTo configure the WAN connection settings:1. From the navigation panel, go to Advanced Settings > WAN> Internet Connection tab.2. Configure the following settings below. When done, clickApply.• WAN Connection Type: Choose your Internet ServiceProvider type. The choices are Automatic IP, PPPoE, PPTP,L2TP or static IP. Consult your ISP if the router is unableto obtain a valid IP address or if you are unsure the WANconnection type.• Enable WAN: Select Yes to allow the router Internet access.Select No to disable Internet access.• Enable NAT: NAT (Network Address Translation) is a systemwhere one public IP (WAN IP) is used to provide Internetaccess to network clients with a private IP address in a LAN.The private IP address of each network client is saved in aNAT table and is used to route incoming data packets.• Enable UPnP: UPnP (Universal Plug and Play) allows severaldevices (such as routers, televisions, stereo systems, gameconsoles, and cellular phone), to be controlled via an IP-based network with or without a central control through agateway. UPnP connects PCs of all form factors, providinga seamless network for remote configuration and datatransfer. Using UPnP, a new network device is discoveredautomatically. Once connected to the network, devicescan be remotely configured to support P2P applications,interactive gaming, video conferencing, and web or proxyservers. Unlike Port forwarding, which involves manuallyconfiguring port settings, UPnP automatically configures therouter to accept incoming connections and direct requests toa specific PC on the local network.