Netopia 4752, Administration Manual

Page: 83 / 284

IP Setup 10-1
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The Netopia 4752 uses Internet Protocol (IP) to communicate both locally and with remote networks. This
chapter shows you how to configure the router to route IP traffic. You also learn how to configure the router to
ser ve IP addresses to hosts on your local network.
Netopia’s IP routing features Network Address Translation, Vir tual Private Networking (VPNs), and IP address
ser ving.
This section covers the following topics:
■
“IP Setup” on page 10-2
■
“IP Address Ser ving” on page 10-10
■
“More Address Ser ving Options” on page 10-17
■
“DHCP Relay Agent” on page 10-23
■
“Connection Profiles” on page 10-25
Network Address Translation allows communication between the LAN connected to the Netopia 4752 and the
Internet using a single (or a few) IP address(es) instead of a routed account with separate IP addresses for
each computer on the network.
Network Address Translation also provides increased security by hiding the local IP addresses of the LAN
connected to the Netopia 4752 from the outside world.
The setup is simpler, so ISPs typically offer Internet accounts suppor ting Network Address Translation at a
significant cost savings.
For a detailed discussion of Network Address Translation, see Chapter 11, “Multiple Network Address
Translation.”