ZyXEL Communications prestige 314 plus ユーザーズマニュアル

Prestige 314 PLUS Broadband Sharing Gateway with 4-Port Switch

4-4

NAT

Figure 4-2 NAT Application With IP Alias

4.1.5 NAT Mapping Types

NAT supports five types of IP/port mapping. They are:

1. One to One: In One-to-One mode, the Prestige maps one local IP address to one global IP address.

2. Many to One: In Many-to-One mode, the Prestige maps multiple local IP addresses to one global IP

address. This is equivalent to SUA (i.e., PAT, port address translation), ZyXEL’s Single User Account
feature that previous ZyXEL routers supported (the SUA Only option in today’s routers).