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How do I set up port forwarding on my Zoom X4 5651 or 5551a DSL modem?

NOTE: These instructions also apply to Zoom X4 models 5651f and 5651af. The web interfaces on the -a and -af models are identical to the 5651.
Before continuing, you will need to know the port number(s) and the protocol(s) (such as TCP or UDP) that your service or application uses. You can usually find this documentation on the manufacturer's web site. You will also need to know the IP address of the computer you will be forwarding these ports on to.
  1. Open your web browser and go to http://10.0.0.2/ . Log in using 'admin' as the username and 'zoomadsl' as the password.
  2. Click on Advanced Setup at the top of the page. Then locate and click on the 'NAT' button.
  3. Select 'NAT Rule Entry' from the drop down list. Click on the 'Add' button near the bottom to add a new NAT rule.
  4. You should use the following settings:
    • 'Rule Flavor' should be RDR.
    • 'Rule ID' should be any unused rule ID number (such as 10).
    • 'IF Name' should be set to 'ALL'.
    • 'Protocol' should be set to either TCP or UDP depending on the settings provided by the program or service you will be forwarding. You can also set it to 'ANY' if you're unsure.
    • Specify both 'Local Address From' and 'Local Address To' as your computer's private IP address that you will be forwarding traffic to.
    • Leave 'Global Address From' and 'Global Address To' unchanged. They should be all zeroes.
    • Fill in both 'Destination Port From' and 'Destination Port To' as the port number you will be forwarding on. Also fill in 'Local Port' with this same port number.
    • Click 'Save Changes' at the bottom.
  5. Once you have saved the changes, be sure to click on 'Write Settings to Flash' so that the modem retains the settings if you ever turn it off.


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Last Updated
26th o October, 2007

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