ZyXEL Communications PMG2006-T20A, User Manual

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Chapter 9 Network Address Translation (NAT)
PMG2006-T20A User’s Guide
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9.8 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. Note that some applications require a greater number of
NAT sessions for better uploading and downloading rates, such as peer-to-peer file sharing.
Figure 49 Network Setting > NAT > Sessions
The following table describes the fields in this screen.
9.9 Technical Reference
This part contains more information regarding NAT.
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.
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 33 Address Mapping: Add/Edit (continued)
LABEL DESCRIPTION
Table 34 Network Setting > NAT > Sessions
LABEL DESCRIPTION
MAX NAT
Session Per Host
(0 ~ 20480) 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 and activate this feature.
Cancel Click this to exit this screen without saving any changes.