Netopia R2020 - Manual (Page 141)

Multiple Network Address Translation and IP Setup 10-15
■ Enter the First and Last Port Number between por ts 1 and 65535. Select OK and press Return. You
will be returned to the Add NAT Ser ver screen.
■ Enter the Server Private IP Address of the ser ver whose ser vice you are expor ting.
Since MultiNAT permits the mapping of multiple private IP addresses to multiple public IP addresses, your
ISP or corporate site's router must be configured such that it knows that your multiple public addresses
correspond to multiple private addresses on your router.
If you want to use static mappings to map internal ser vers to public addresses, your ISP or corporate site's
router must also be configured for static routes to these public addresses on the Netopia Router.
■ Enter the Public IP Address to which you are expor ting the ser vice.
Note: For PAT Map lists and Ser ver lists, if you use the Public Address 0.0.0.0, the list will acquire its
public IP address from the WAN IP address specified by your WAN IP configuration in the Connection Profile.
If that is a static IP address, then the PAT map list and Ser ver lists will acquire that address. If it is a
negotiated IP address, such as may be assigned via DHCP or PPP, the PAT map list and Ser ver lists will
acquire that address each time it is negotiated.
■ Select ADD NAT SERVER and press Return. The ser ver will be added to your ser ver list and you will be
returned to the Add NAT Ser ver List screen.
Note: CUSeeMe (or other ser vices that listen on specific por ts) through MultiNAT works as it did for regular NAT
routers. In order to use CUSeeMe through the Netopia R2020 Router, you must expor t the por ts 7648
and
7649. In MultiNAT, you may use a por t range expor t. Without the expor t, CUSeeMe will fail to work.
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Once a ser ver list exists, you can select it for modification or deletion.
■ Select Show/Change Server List from the Network Address Translation screen.
■ Select the Ser ver List Name you want to modify from the pop-up menu and press Return.
Other Exported Port
First Port Number (1..65535): 0
Last Port Number (1..65535): 0
OK CANCEL