ZyXEL Communications G.SHDSL.bis 4-port Security Gateway P-793H - Manual (Page 116)

P-793H User’s Guide
116 Chapter 7 Network Address Translation (NAT) Screens
7.6.1 Address Mapping Rule Edit
Use this screen to edit an address mapping rule. Click the rule’s edit icon in the Address
Mapping screen to display the screen shown next.
Figure 47 NAT > Address Mapping > Edit
Type 1-1: One-to-one mode maps one local IP address to one global IP address. Note that
port numbers do not change for the One-to-one NAT mapping type.
M-1: Many-to-One mode 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 only.
M-M Ov (Overload): Many-to-Many Overload mode maps multiple local IP addresses
to shared global IP addresses.
MM No (No Overload): Many-to-Many No Overload mode maps each local IP
address to unique global IP addresses.
Server: This type allows you to specify inside servers of different services behind the
NAT to be accessible to the outside world.
Modify Click the edit icon to go to the screen where you can edit the address mapping rule.
Click the delete icon to delete an existing address mapping rule. Note that
subsequent rules move up by one when you take this action.
Table 33 NAT > Address Mapping (continued)
LABEL DESCRIPTION