ZyXEL P-202H User Guide - Page 69
SUA Server
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Figure 20 NAT Mode P-202H Plus v2 User's Guide The following table describes the labels in this screen. Table 11 NAT Mode LABEL None SUA Only Edit Details Full Feature Edit Details Apply Cancel DESCRIPTION Select this radio button to disable NAT. Select this radio button if you have just one public WAN IP address for your ZyXEL Device. The ZyXEL Device uses Server Set 1 in the NAT - Edit SUA/NAT Server Set screen. Click this link to go to the NAT - Edit SUA/NAT Server Set screen. Select this radio button if you have multiple public WAN IP addresses for your ZyXEL Device. Click this link to go to the NAT - Address Mapping Rules screen. Click Apply to save your changes back to the ZyXEL Device. Click Cancel to reload the previous configuration for this screen. 6.4 SUA Server A 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 NAT makes your whole inside network appear as a single computer to the outside world. You may enter a single port number or a range of port numbers to be forwarded, and the local IP address of the desired server. The port number identifies a service; for example, web service is on port 80 and FTP on port 21. In some cases, such as for unknown services or where one server can support more than one service (for example both FTP and web service), it might be better to specify a range of port numbers. You can allocate a server IP address that corresponds to a port or a range of ports. Many residential broadband ISP accounts do not allow you to run any server processes (such as a Web or FTP server) from your location. Your ISP may periodically check for servers and may suspend your account if it discovers any active services at your location. If you are unsure, refer to your ISP. Chapter 6 Network Address Translation (NAT) Screens 68