ZyXEL Communications P-870HW-I User Manual

P-870HW-I1 User’s Guide

Chapter 10 NAT

139

1 Trigger events only happen on data that is going coming from inside the ZyXEL Device 

and going to the outside.

2 If an application needs a continuous data stream, that port (range) will be tied up so that 

another computer on the LAN can’t trigger it. 

Use this screen to enable and disable port forwarding, trigger port, and other NAT rules. To 
open this screen, click Network > NAT > General.

Note: Make sure your firewall allows the traffic you specify in the NAT screens to be 

forwarded through the ZyXEL Device. You might have to create a firewall rule.

Figure 76   Network > NAT > General

The following table describes the labels in this screen. 

Table 58   Network > NAT > General

Enable 

Network 

Address 

Translation

Select this to enable port forwarding, trigger ports, and NAT.

SUA Only

Select this if you have only one WAN IP address for your ZyXEL Device. 

Full Feature 

Select this if you have more than one public WAN IP address for your ZyXEL Device. 

Max NAT/

Firewall 

Session Per 

User

Select the maximum number of NAT rules and firewall rules the ZyXEL Device 

enforces at one time. The ZyXEL Device automatically allocates memory for the 

maximum number of rules, regardless of whether or not there is a rule to enforce.

Apply

Click this to save your changes back to the ZyXEL Device.

Reset

Click this to begin configuring this screen afresh.