ZyXEL Communications ADSL2+4 Benutzerhandbuch

 Chapter 8 Network Address Translation (NAT)

P-660H-T1v3s User’s Guide

Use this screen to activate NAT. Click Network > NAT to open the following 
screen.

Note: You must create a firewall rule in addition to setting up SUA/NAT, to allow traffic 

from the WAN to be forwarded through the P-660H-T1v3s.

Figure 36   Network > NAT > General

The following table describes the labels in this screen.

Table 22   Network > NAT > General

Active Network 
Address 
Translation 
(NAT)

Select this check box to enable NAT.

SUA Only

Select this radio button if you have just one public WAN IP address for 
your P-660H-T1v3s.

Full Feature 

Select this radio button if you have multiple public WAN IP addresses for 
your P-660H-T1v3s.

Max NAT/
Firewall Session 
Per User

When computers use peer to peer applications, such as file sharing 
applications, they need to establish NAT sessions. If you do not limit the 
number of NAT sessions a single client can establish, this can result in 
all of the available NAT sessions being used. In this case, no additional 
NAT sessions can be established, and users may not be able to access 
the Internet.

Each NAT session establishes a corresponding firewall session. Use this 
field to limit the number of NAT/Firewall sessions client computers can 
establish through the P-660H-T1v3s.

If your network has a small number of clients using peer to peer 
applications, you can raise this number to ensure that their 
performance is not degraded by the number of NAT sessions they can 
establish. If your network has a large number of users using peer to 
peer applications, you can lower this number to ensure no single client 
is exhausting all of the available NAT sessions.