Zyxel-communications Internet Security Gateway ZyWALL 100 Instrukcja Użytkownika Pobierz pdf (Strona 118)

100

101

ZyWALL 100 Internet Security Gateway

NAT 12-5

2. Many to One: In Many-to-One mode, the ZyWALL 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 (the SUA Only option).

3. Many to Many Overload: In Many-to-Many Overload mode, the ZyWALL maps the multiple local IP

addresses to shared global IP addresses.

4. Many One to One: In Many-One-to-One mode, the ZyWALL maps each local IP address to a unique

global IP address.

5. Server: This type allows you to specify inside servers of different services behind the NAT to be

accessible to the outside world although, it is highly recommended that you use the DMZ port for these

servers instead.

Port numbers do not change for One-to-One and Many-One-to-One NAT mapping

types.

The following table summarizes these types.

Table 12-2 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

1 2 ... 113 114 115 116 117 118 119 120 121 122 123 ... 355 356

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