The Sessions Screen - ZyXEL Communications VMG3312-T20A User Manual

Figure 90 Address Mapping: Add/Edit
The following table describes the fields in this screen.
Table 65 Address Mapping: Add/Edit
LABEL
Rule Name
Type
Local Start IP
Local End IP
Global Start IP
Global End IP
WAN Interface
OK
Cancel

11.8 The Sessions Screen

Use this screen to limit the number of concurrent NAT sessions a client can use. Click Network Setting >
NAT > Sessions to display the following screen.
Chapter 11 Network Address Translation (NAT)
DESCRIPTION
Type up to 20 alphanumberic characters for the name of this rule.
Choose the IP/port mapping type from one of the following.
One-to-One: This 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.
Many-to-One: This mode maps multiple local IP addresses to one global IP address. This is
equivalent to SUA (i.e., PAT, port address translation), the VMG's Single User Account feature that
previous routers supported only.
Many-to-Many: This mode maps multiple local IP addresses to shared global IP addresses.
Enter the starting Inside Local IP Address (ILA).
Enter the ending Inside Local IP Address (ILA). If the rule is for all local IP addresses, then this field
displays 0.0.0.0 as the Local Start IP address and 255.255.255.255 as the Local End IP address. This
field is blank for One-to-One mapping types.
Enter the starting Inside Global IP Address (IGA). Enter 0.0.0.0 here if you have a dynamic IP
address from your ISP. You can only do this for the Many-to-One mapping type.
Enter the ending Inside Global IP Address (IGA). This field is blank for One-to-One and Many-to-
One mapping types.
Select a WAN interface to which the address mapping rule applies.
Click OK to save your changes.
Click Cancel to exit this screen without saving.
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