Chapter 10 Network Address Translation (NAT) Screens
10.5Configuring Port Forwarding
"If you do not assign a Default Server IP address, the ZyXEL Device discards all packets received for ports that are not specified here or in the remote management setup.
Click Network > NAT > Port Forwarding to open the following screen. This screen is available only when you select SUA only in the NAT > General screen.
See Appendix E on page 475 for port numbers commonly used for particular services.
Figure 93 Port Forwarding
The following table describes the fields in this screen.
Table 54 Port Forwarding
LABEL | DESCRIPTION |
Default Server |
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Setup |
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Default Server | In addition to the servers for specified services, NAT supports a default server. A |
| default server receives packets from ports that are not specified in this screen. If |
| you do not assign a Default Server IP address, the ZyXEL Device discards all |
| packets received for ports that are not specified here or in the remote management |
| setup. |
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Port Forwarding |
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Service Name | Select a service from the |
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Server IP | Enter the IP address of the server for the specified service. |
Address |
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Add | Click this button to add a rule to the table below. |
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# | This is the rule index number |
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Active | Click this check box to enable the rule. |
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Service Name | This is a service’s name. |
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Start Port | This is the first port number that identifies a service. |
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End Port | This is the last port number that identifies a service. |
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| 161 |
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