ZyXEL Communications ZyXEL ZyWALL 2WG - Manual (Page 334)

Chapter 17 Network Address Translation (NAT)
ZyWALL 2WG User’s Guide
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Selecting SUA means (latent) multiple WAN-to-LAN and WAN-to-DMZ address translation.
That means that computers on your DMZ with public IP addresses will still have to undergo
NAT mapping if you’re using SUA NAT mapping. If this is not your intention, then select
Full Feature NAT and don’t configure NAT mapping rules to those computers with public
IP addresses on the DMZ.
17.3 NAT Overview Screen
Click ADVANCED > NAT to open the NAT Overview screen.
Figure 190 ADVANCED > NAT > NAT Overview
The following table describes the labels in this screen.
Table 111 ADVANCED > NAT > NAT Overview
LABEL DESCRIPTION
Global Settings
Max.
Concurrent
Sessions
This read-only field displays the highest number of NAT sessions that the ZyWALL
will permit at one time.
Max.
Concurrent
Sessions Per
Host
Use this field to set the highest number of NAT sessions that the ZyWALL will permit
a host to have at one time.
WAN Operation
Mode
This read-only field displays the operation mode of the ZyWALL's WAN interfaces.