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10.7. DynDNS
DynDNS stands for Dynamic Domain Name System.
It is a service, provided by companies like www.DynDNS.org or www.noip.com, offering the handling of
dynamic IP addresses.
When working with GPRS connection, using public dynamic IP addresses, it is not possible to access the
RTU directly, as you don't know its IP address.
The DynDNS service solves this problem: each time the RTU detects a changing of its IP address, it
informs the DynDNS server.
You then connect to the DynDNS Server that will redirect you to the RTU.
Example of topology : connecting with Internet Explorer to a RTU having a GPRS dynamic IP address.
Sequence:
1. Detecting a changing in its IP address, the RTU informs the DynDNS Server.
2. Internet Explorer connects to the DynDNS Server
(example: http://waterloo.dyndns.org). The DynDNS Server resolves the name and sends back
the corresponding IP address.
3. Internet Explorer connects to the IP address it has received.
10.7.1. How to configure DynDNS in TBox
1. Subscribe a DynDNS account:

Go to www.dyndns.org or www.no-ip.com (examples of DynDNS services)

Create an Account

Create a Host