ZyXEL Communications Parental Control Gateway HS100/HS100W Guía de usuario Pagina 134

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HomeSafe User’s Guide
9-4 NAT Screens
Table 9-2 NAT Mapping Types
TYPE IP MAPPING SMT ABBREVIATION
One-to-One ILA1ÅÆ IGA1 1-1
Many-to-One (SUA/PAT) ILA1ÅÆ IGA1
ILA2ÅÆ IGA1
M-1
Many-to-Many Overload ILA1ÅÆ IGA1
ILA2ÅÆ IGA2
ILA3ÅÆ IGA1
ILA4ÅÆ IGA2
M-M Ov
Many One-to-One ILA1ÅÆ IGA1
ILA2ÅÆ IGA2
ILA3ÅÆ IGA3
M-1-1
Server Server 1 IPÅÆ IGA1
Server 2 IPÅÆ IGA1
Server 3 IPÅÆ IGA1
Server
9.2 Using NAT
) You must create a firewall rule in addition to setting up
SUA/NAT, to allow traffic from the WAN to be forwarded
through the HomeSafe.
9.2.1 SUA (Single User Account) Versus NAT
SUA (Single User Account) is a ZyNOS implementation of a subset of NAT that supports two
types of mapping, Many-to-One and Server. The HomeSafe also supports Full Feature NAT to
map multiple global IP addresses to multiple private LAN IP addresses of clients or servers using
mapping types. Select either SUA Only or Full Feature in the WAN IP screen.
9.3 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 SUA 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.
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