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Series 3: How do I add a device to the DMZ of my CradlePoint router?

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This article was written based on firmware version 5.0.0.

Description:

Typically all computers connected to a router are protected by the router’s firewall.  In order to allow a computer on the Internet to connect through the router to a specific computer it is necessary to either manually forward the required ports, Port Forwarding on a Series 3 CradlePoint, or place the device/computer on the CradlePoint’s Demilitarized Zone (DMZ).

The CradlePoint’s routers DMZ opens all ports that are not already reserved and passes them to a single device/computer attached to the routers LAN.  This essentially places the device/computer outside the CradlePoint’s firewall.  This setting is often used to allow gaming consoles to host online games.

Any port forwarding rules or enabled administrative ports have a higher priority than the DMZ rule.

Directions:

Before adding a computer to the DMZ it is important to ensure that the device/computer is always assigned the same IP address from the Cradlepoint router.  To ensure that the device/computer is always assigned the same IP address from the Cradlepoint router Add a DHCP reservation on a Series 3 CradlePoint.  Verify that the device/computer receives the correct IP address from the router.

  1. Log into the router’s setup page (login instructions).
  2. If your router has a Basic Mode / Advanced Mode toggle button beneath the CradlePoint logo on the top left-hand side (e.g. MBR95, CTR35), you will need to set it to Advanced Mode.
  3. Then, click on the Network Settings tab then select Firewall.                                                    User-added image
  4. Expand the ADVANCED DMZ (DeMilitarized Zone) section.
  5. Check the Enabled box then enter the device/computer IP address into the IP Address field.User-added image
  6. Click Apply to save settings.

The device/computer is now outside of the routers firewall.  Any connection originating from the Internet that does not have an applicable port forwarding rule will be passed directly to the device/computer in the DMZ.


Category: Cradlepoint Series 3

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