This article was written based upon firmware version 5.0.0 for Series 3 and 2.0.0 for Series 2.
In order to remotely connect from the Internet into the CradlePoint (or into devices connected behind it), it is necessary that the connection the CradlePoint receives is publicly routable from the Internet. If the CradlePoint is receiving a private (non-routable) IP address from a “network address translation” (NAT) router then (unless you have access to the NAT router to forward ports to CradlePoint’s private IP address) you will not be able to route to it from the Internet.
Most wired (DSL; cable) Internet service providers provide (publicly routable) dynamic IP addresses by default and usually offer (publicly routable) static IP addresses for an additional fee. The only difference between dynamic and static publicly routable IP addresses is that the dynamic IP address will change to a different address every time the modem connects.
It is common for users of dynamic public IP addresses to use a free or paid “Dynamic DNS” service to update a DNS record each time the address changes. This allows you to remember a host name rather than needing to know what your current WAN IP address is. For more information about how to set the CradlePoint to use a dynamic DNS service, refer to this link: (http://knowledgebase.cradlepoint.com/articles/Support/setup-Dynamic-DNS-on-a-Series-3-CradlePoint)
These specific IP address ranges are reserved specifically as non-routable addresses to be used in private networks:
10.0.0.0 through 10.255.255.255
172.16.0.0 through 126.96.36.199
192.168.0.0 through 192.168.255.255
If the CradlePoint receives a WAN IP address within any of these private ranges, this means that connections originating from the Internet will not be able to get past the NAT router (without port forwarding) in order to actually reach the CradlePoint’s WAN interface.
These directions will walk you through verifying whether the CradlePoint is receiving a publicly routable IP address or if it is receiving a private IP address from a NAT router. This is determined by checking to see if the CradlePoint’s WAN IP address is the same address that other computers on the Internet see it as (indicating that you have a routable connection). If these addresses do not match, then your router is connecting behind a NAT router (which is the device that is connected to the Internet.
Series 1 or 2 CradlePoint follow these steps:
- Log into the administrative console, the default location is http://192.168.0.1 Click here if you are unsure how to access the administration pages.
- Click on STATUS in the red bar, and then DEVICE INFO in the left-hand column.
- Make note of the IP Address in the WAN Interfaces section.
- Log into the CradlePoint’s administrative console, the default location is http://192.168.0.1. Click here if you are unsure of how to access the administration pages.
- Click the Status tab along the top of the page, and then Dashboard from the drop-down menu.
- Make note of the IP Address under the Internet section of this page.