Chapter 9 Network Address Translation (NAT)
9.2 The NAT General Setup Screen
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 ZyXEL Device.
Figure 63 Network > NAT > General
The following table describes the labels in this screen.
Table 41 Network > NAT > General
LABEL | DESCRIPTION |
Active Network | Select this check box to enable NAT. |
Address |
|
Translation |
|
|
|
SUA Only | Select this radio button if you have just one public WAN IP address for |
| your ZyXEL Device. |
|
|
Full Feature | Select this radio button if you have multiple public WAN IP addresses for |
| your ZyXEL Device. |
|
|
Max NAT/ | When computers use peer to peer applications, such as file sharing |
Firewall Session | applications, they need to establish NAT sessions. If you do not limit the |
Per User | 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 ZyXEL Device. |
| 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. |
|
|
| 135 |
|
|