How do I set up a device in a DMZ with a Zoom ADSL X3, X4, or X5 modem router?

You must assign a static IP address on the device you want to put in the DMZ. The instructions below assume the device is a Windows 2000 or XP computer. For another device (such as a DVR or Slingbox) you will need to consult the manual that came with that device.

First, assign a static IP address on the Windows 2000/XP computer:

1. From the Start menu, select Control Panel (or Settings and then Control Panel).
2. Select Network Connections.
3. Right-click on Local Area Connection and select Properties. The Local Area Connection Properties window opens.
4. In the section with the heading, "This connection uses the following items:" scroll down until you see Internet Protocol (TCP/IP).
5. Highlight Internet Protocol (TCP/IP) and select Properties. The Internet Protocol (TCP/IP) Properties window opens.
6. Click on Use the Following IP Addresses
7. Assuming you are using the default LAN IP settings on the Zoom ADSL X5 modem, enter the following information:
   • IP address: This should be in the format 10.0.0.x, where x is any number from 100 to 250. (Note: If you have multiple computers or devices, each one must have a unique IP address number.)
   • Subnet mask: 255.255.255.0
   • Default gateway: 10.0.0.2
   • Preferred DNS server: 10.0.0.2 (Note: If your ISP gave you a Preferred DNS server IP address, enter that information here. Otherwise, use 10.0.0.2.)
   • Alternate DNS: Leave blank (Note: If your ISP gave you an Alternate DNS server IP address, enter that information here. Otherwise, leave this field blank.)
   • Click OK, to close the Internet Protocol (TCP/IP) Properties window
8. Click OK, to close the Local Area Connections Properties. Your computer may ask you to reboot at this time.

Next, you need to access the Zoom Configuration Manager and create a NAT Rule:

1. On a computer that is connected to the Zoom ADSL modem router, open a web browser and type http://10.0.0.2 and then press Enter (or Return)
2. Enter the modem's admin Use Name and Password:
   • User Name: admin
   • Password: zoomadsl (where "l" is a lowercase letter L)
3. When the Basic Setup page appears, click on the Advance Setup icon at the top of the page.
4. Click the NAT button.
5. From the NAT Options pull-down menu, select NAT Rule Entry.
6. Click the Add button. A new window opens.
7. Enter the following information:
   • Rule Flavor: Select RDR
   • Rule ID: enter 5 or any number that is not already listed. (Note: Depending on your modem model, you may have up to 4 default rules, so the next one is 5.)
   • If Name: Select All
   • Protocol: Select ANY
   • Local Address From: Enter 10.0.0.x (where x is between 100 and 250), which is the IP address of the device you want to put in a DMZ.
   • Local Address To: Enter the same 10.0.0.x IP address as above
   • Global Address From: 0.0.0.0
   • Global Address To: 0.0.0.0
   • Destination Port From: 0 (zero)
   • Destination Port To: 65535
   • Local Port: Enter 0 (zero)
   • Click on the Save Changes button
   • Click on the Write Settings to Flash button
8. The computer is now in a DMZ and outside of the modem’s firewall. Devices which can be configured this way to enhance their use are gaming devices like Xbox, PS2, and PS3 as well as Slingbox.