ZyXEL p-660hwp Guia Do Utilizador

 Chapter 9 Network Address Translation (NAT)

P-660HWP-Dx User’s Guide

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-660HWP-Dx. Click Network > NAT to open the 
following screen. 

Figure 86   NAT General 

The following table describes the labels in this screen. 

Table 49   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-

660HWP-Dx. 

Full Feature 

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

660HWP-Dx. 

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 each client computer can establish through the P-

660HWP-Dx. 
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 using 

all of the available NAT sessions. 

Enable SIP 

ALG

Select this to make sure SIP (VoIP) works correctly with port-forwarding and port-

triggering rules.

Apply

Click Apply to save your changes to the P-660HWP-Dx.

Cancel

Click Cancel to reload the previous configuration for this screen.