Prestige 642R Series ADSL Router
3.14 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).
The IP address for the SUA can be either fixed or dynamically assigned by the ISP. In addition, you can designate servers, e.g., a web server and a Telnet server, on your local network and make them accessible to the outside world. If you do not define any server, SUA offers the additional benefit of firewall protection. If no server is defined, all incoming inquiries will be filtered out by your Prestige, thus preventing intruders from probing your network. Your Prestige accomplishes this address sharing by translating the internal LAN IP addresses to a single address that is globally unique on the Internet. For more information on IP address translation, refer to RFC 1631, The IP Network Address Translator (NAT).
3.14.1 Advantages of SUA
In summary:
zSUA is a
zSUA supports servers to be accessible to the outside world.
zSUA can provide firewall protection if you do not specify a server. All incoming inquiries will be filtered out by your Prestige.
zUDP and TCP packets can be routed. In addition, partial ICMP, including echo and traceroute, is supported.
3.14.2 Single User Account Configuration
The steps for configuring your Prestige for Single User Account are identical to the conventional Internet access with the exception that you need to fill in two extra fields in Menu 4 - Internet Access Setup, as shown below.
Internet Access |
