ZyXEL Communications Prestige 480 - Manual (Page 78)

Prestige 480 Dual BRI ISDN Router
3-14 Internet Access
3.7 Single User Account
Typically, if there are multiple users on the LAN wanting to concurrently access the Internet, you will have
to lease a block of legal, or globally unique, IP addresses from the ISP.
The Single User Account (SUA) feature allows you to have the same benefits as having multiple legal
addresses, but only pay for one IP address, thus saving significantly on the subscription fees. (Check with
your ISP before you enable this feature).
Figure 3-9 Single User Account Topology
The Single User Account feature may also be used on connections to remote networks 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.
192.168.1.33
192.168.1.34
192.168.1.35
192.168.1.36
192.168.1.1
The SUA network appears as a
single host to the Internet.
Same Network
Number
Prestige 480
ISP
INTERNET