Prestige 861H User’s Guide
Internet Access
18-1
Chapter 18
Internet Access
This chapter shows you how to configure the LAN and WAN of your Prestige for Internet
access
.
18.1 LANs, WANs and the Prestige
The actual physical connection determines whether the Prestige ports are LAN or WAN ports.
There are two separate IP networks, one inside the LAN network and the other outside the WAN
network as shown next:
Figure 18-1 LAN and WAN IP Addresses
18.2 LAN Overview
A Local Area Network (LAN) is a shared communication system to which many computers are
attached. A LAN is a computer network limited to the immediate area, usually the same building
or floor of a building. The LAN screens can help you configure a LAN DHCP server and manage
IP addresses.
18.3 DNS Server Address
DNS (Domain Name System) is for mapping a domain name to its corresponding IP address and
vice versa. The DNS server is extremely important because without it, you must know the IP
address of a machine before you can access it. The DNS server addresses that you enter in the
DHCP setup are passed to the client machines along with the assigned IP address and subnet
mask.
There are two ways that an ISP disseminates the DNS server addresses. The first is for an ISP to
tell a customer the DNS server addresses, usually in the form of an information sheet, when s/he
signs up. If your ISP gives you the DNS server addresses, enter them in the
DNS Server
fields in
DHCP Setup
, otherwise, leave them blank.
Some ISP’s choose to pass the DNS servers using the DNS server extensions of PPP IPCP (IP
Control Protocol) after the connection is up. If your ISP did not give you explicit DNS servers,
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