Netgear TA612V User Manual download pdf (Page 15)

Reference Manual for the Broadband Voice Adapter TA612V

Introduction 2-3

202-10037-01, March 2005

• Computers Hidden by NAT: NAT opens a temporary path to the Internet for requests

originating from the local network. Requests originating from outside the LAN are discarded,

preventing users outside the LAN from finding and directly accessing the computers on the

LAN.

• Port Forwarding: Although NAT prevents Internet locations from directly accessing the

computers on the LAN, the router allows you to direct incoming traffic to specific computers

based on the service port number of the incoming request, or to one designated “DMZ” host

computer. You can specify forwarding of single ports or ranges of ports.

• Port Triggering: Port Triggering is an advanced feature that can be used to easily enable

gaming and other internet applications. Port Forwarding is typically used to enable similar

functionality, but it is static and has some limitations.

Autosensing Ethernet Connections with Auto Uplink

With its internal 3-port 10/100 switch, the TA612V can connect to either a 10 Mbps standard

Ethernet network or a 100 Mbps Fast Ethernet network. Both the LAN and WAN interfaces are

autosensing and capable of full-duplex or half-duplex operation.

The router incorporates Auto Uplink

technology. Each Ethernet port will automatically sense

whether the Ethernet cable plugged into the port should have a ‘normal’ connection such as to a

computer or an ‘uplink’ connection such as to a switch or hub. That port will then configure itself

to the correct configuration. This feature also eliminates the need to worry about crossover cables,

as Auto Uplink will accommodate either type of cable to make the right connection.

Extensive Protocol Support

The TA612V adapter supports the Transmission Control Protocol/Internet Protocol

(TCP/IP) and Routing Information Protocol (RIP). For further information about TCP/IP, refer to

Appendix B, “Network and Routing Basics.”

• IP Address Sharing by NAT: The TA612V adapter allows several networked computers to

share an Internet account using only a single IP address, which may be statically or

dynamically assigned by your Internet service provider (ISP). This technique, known as NAT,

allows the use of an inexpensive single-user ISP account.

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Netgear TA612V User Manual Page 15