ZyXEL Communications Prestige 650HW - Manual (Page 95)

Prestige 650HW ADSL Router User’s Guide
NAT 7-5
4. Many-to-Many No Overload: In Many-to-Many No Overload mode, the Prestige 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-to-Many No Overload NAT
mapping types.
The following table summarizes these types.
Table 7-2 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-to-Many No Overload ILA1ÅÆ IGA1
ILA2ÅÆ IGA2
ILA3ÅÆ IGA3
…
M:M No OV
Server Server 1 IPÅÆ IGA1
Server 2 IPÅÆ IGA1
Server 3 IPÅÆ IGA1
Server