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Prestige 202H Plus Quick Start Guide
16
4.4 Test Your Internet Connection
Launch your web browser and navigate to www.zyxel.com. You don’t need a dial-up program such as Dial Up
Networking. Internet access is just the beginning. Refer to the User’s Guide for more detailed information on the
complete range of Prestige features.
5 Advanced Configuration
This section shows how to configure some of the advanced features of the Prestige.
5.1 Network Address Translation Overview
NAT (Network Address Translation - NAT, RFC 1631) is the translation of the IP address of a host in a packet. For
example, the source address of an outgoing packet, used within one network is changed to a different IP address known
within another network.
If you have a single public IP address then select SUA Only in the NAT-Mode screen (see Figure 1). If you have
multiple public IP addresses then you may use full feature mapping types (see the User’s Guide for more details).
NAT supports five types of IP/port mapping. They are:
1. One-to-One: One-to-one mode maps one local IP address to one global IP address. Note that port numbers
do not change for One-to-one NAT mapping type.
2. Many-to-One: Many-to-One mode maps multiple local IP addresses to one global IP address.
3. Many-to-Many Overload: Many-to-Many Overload mode maps multiple local IP addresses to shared global
IP addresses.
4. Many-to-Many No Overload: Many-to-Many No Overload mode maps each local IP address to unique
global IP addresses.
5. Server: This type allows you to specify inside servers of different services behind the NAT to be accessible
to the outside world.
5.2 Configuring SUA Server
An SUA server set is a list of inside (behind NAT on the LAN) servers, for example, web or FTP, that you can make
visible to the outside world even though SUA makes your whole inside network appear as a single computer to the
outside world.
1. From the main screen click Advanced Setup and then NAT to open the NAT-Mode screen. Select SUA Only.