# Dynamic dns server update

**URL:** <https://forum.sierrawireless.com/t/dynamic-dns-server-update/5965>\
**Category:** Open AT\
**Created:** [November 15, 2012, 4:49pm UTC](https://forum.sierrawireless.com/t/dynamic-dns-server-update/5965 "2012-11-15T16:49:28Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![PHILIP](https://avatars.discourse-cdn.com/v4/letter/p/96bed5/32.png) [@PHILIP](https://forum.sierrawireless.com/u/PHILIP)\
**Post date:** [November 15, 2012, 4:49pm UTC](https://forum.sierrawireless.com/t/dynamic-dns-server-update/5965/1 "2012-11-15T16:49:28Z")

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I have created a remote TCP/IP COM port where I use HyperTerminal to make a TCP/IP connection to a remote terminal. I am using an unrestricted APN sim to connect to the internet, so I get a real dynamic IP when I connect. I then type the IP address and port into HyperTerminal and connect.

This all works perfectly. What I now need to do is create a DYNAMIC DNS update service where I connect to [dynupdate.no-ip.com:80](http://dynupdate.no-ip.com:80) and update my local IP onto the server. I will then be able to use a URL to connect to the remote terminal instead of typing in a new ip every time the module connects.

Does any one know how to acchieve this?

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**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [November 15, 2012, 5:45pm UTC](https://forum.sierrawireless.com/t/dynamic-dns-server-update/5965/2 "2012-11-15T17:45:27Z")

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> [@PHILIP](#):
>
> Does any one know how to acchieve this?

The documentation for your chosen D-DNS service will tell you…

However, this relies upon your device having a Public IP address…