User guide

Simpliﬁed Local Area Network Setup

DHCP (Dynamic Host Conﬁguration Protocol) Server

DHCP Server functionality enables the Gateway to assign to your LAN computer(s) a “pri-

vate” IP address and other parameters that allow network communication. The default

DHCP Server conﬁguration of the Gateway supports up to 253 LAN IP addresses.

This feature simpliﬁes network administration because the Gateway maintains a list of IP

address assignments. Additional computers can be added to your LAN without the hassle

of conﬁguring an IP address.

DNS Proxy

Domain Name System (DNS) provides end users with the ability to look for devices or web

sites by typing their names, rather than IP addresses. For web surfers, this technology

allows you to enter the URL (Universal Resource Locator) as text to surf to a desired web-

site.

The Netopia DNS Proxy feature allows the LAN-side IP address of the Gateway to be used

for proxying DNS requests from hosts on the LAN to the DNS Servers conﬁgured in the

gateway. This is accomplished by having the Gateway's LAN address handed out as the

“DNS Server” to the DHCP clients on the LAN.

☛ NOTE:

The Netopia DNS Proxy only proxies UDP DNS queries, not TCP DNS queries.

UPnP™

Universal Plug and Play (UPnP™) is a set of protocols that allows a PC to automatically dis-

cover other UPnP devices (anything from an internet gateway device to a light switch),

retrieve an XML description of the device and its services, control the device, and sub-

scribe to real-time event notiﬁcation. PCs using UPnP can retrieve the Gateway’s WAN IP

address, and automatically create NAT port maps. This means that applications that sup-

port UPnP, and are used with a UPnP-enabled Netopia Gateway, will not need application

layer gateway support on the Netopia Gateway to work through NAT. By default, UPnP is

enabled on the Netopia Gateway.