Dynamic DNS, The Wonders Of Our Time

Sunday, February 21, 2010 by Brett Neal
In a recent post, I wrote on how to set up a Ventrilo Server.  In this follow-up post, I will discuss how to set up a service that allows users to connect to the Vent server automatically event though your Public IP address changed.  I currently use a program called DynDNS.  In network support services, this is a set up where you create a dns name that is directed to your public IP of your Vent server.  For example, your dns name could be owner.yourname.net.  What this dynamic dns service does is that anyone who goes to owner.yourname.net will be directed to connect to your most currently public IP address. It works basically like when you move and you tell the post office that your address has changed.  The dynamic dns provider is the post office.

The service that I use, as well as many others, requires you to download a program.  This program runs on your computer at all times.  For most home Internet connections, your IP address changes because you haven't paid for a static or sticky public IP address.  It could change every few hours to every few months.  This is called a Dynamic IP Address.  The dynamic dns program sends information from your computer to the service every few seconds.  So if your IP address is 74.125.95.103 and it changes to 74.125.93.120, the software will notify your service of this change.  Even though your address keeps changing, it updates the dns name owner.yourname.net to 74.125.93.120.

This program has many uses.  I have been using it to keep my own voice server the same no matter how many times my ip address changes.  This can also be used for people who want to host their own website, or if you set up a connection to your computer from another and you require the address not to change.  However, a word of caution is to check the acceptable terms and conditions of use for your Internet Service Provider (ISP).

If you need help, please contact your Internet connectivity solutions provider to see if there are any settings that may need to be changed for dynamic DNS to work.  In my example, I installed the DynDNS program on my computer, but I also know of situations where it is possible to install the updating service on your actual router.

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