ZyXEL Communications VMG3925-B10A - The Sessions Screen

Chapter 11 Network Address Translation (NAT)
VMG3925-B10A User’s Guide
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The following table describes the fields in this screen.
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.
Figure 88 Network Setting > NAT > Sessions
The following table describes the fields in this screen.
Table 65 Address Mapping: Add/Edit
LABEL DESCRIPTION
Type 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.
Local Start IP
Enter the starting Inside Local IP Address (ILA).
Local End IP 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.
Global Start IP 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.
Global End IP Enter the ending Inside Global IP Address (IGA). This field is blank for One-to-One and
Many-to-One mapping types.
Set Select the number of the mapping set for which you want to configure.
WAN Interface Select a WAN interface to which the address mapping rule applies.
OK Click OK to save your changes.
Cancel Click Cancel to exit this screen without saving.
Table 66 Network Setting > NAT > Sessions
LABEL DESCRIPTION
WAX NAT
Session Per
Host
Use this field to set a limit to the number of concurrent NAT sessions each client host can
have.
If only a few clients use peer to peer applications, you can raise this number to improve
their performance. With heavy peer-to-peer application use, lower this number to ensure no
single client uses too many of the available NAT sessions.
Apply Click this to save your changes on this screen.
Cancel Click this to exit this screen without saving any changes.