ZyXEL Communications 128MH user manual Single User Account, Internet

Prestige 128MH PSTN Router/Hub

3.5Single User Account

Typically, if there are multiple users on the LAN wanting to concurrently access the Internet, they will have to subscribe to multiple IP addresses or a Class C sub-network from the ISP. In either case, these two approaches will cost more than a single user account.

The Single User Account (SUA) feature allows customers to have the same benefits as having a Class C address, but still only pay for one IP address, thus saving significantly on subscription fees. (Check with your ISP before you enable this feature).

Figure 3-4 illustrates a typical Single User Account topology.

192.168.0.4

192.168.0.5

192.168.0.6

192.168.0.7

Same Network

Addresses

IP Address

Assigned by ISP

192.168.0.1 Prestige 128MH

INTERNET

Prestige 128MH

Ethernet LAN

Figure 3-4. Single User Account Topology

The Single User Account feature may also be used to connect to TCP/IP remote nodes other than the ISP. For example, this feature can be used to simplify the allocation of IP addresses when connecting branch offices to the corporate network.

3-12Chapter 3 Internet Access Application