One of the questions I have received from many viewers is what to do with Dynamic DNS. When you host a server you really need a reliable public ip address if you are ever to access your server remotely. Typically you have a static ip address that never changes and you create records at your domain provider for your address (i.e. example.com) that point to the public ip of your server. That works great for servers when you have a static ip that never changes, but what happens when you have a dynamic ip? For those who are home users who don't have a business tier, their public ip is leased to them for a period of time. Then when something happens like a reboot of the modem or a random update at their ISP, their public ip changes and then they are stuck unable to access their server until the are able to get home, figure out what the new public ip is and then make the change at their domain provider to get everything up and running again. This leads to being locked out of the server and causes problems.
There are a few services that provide updaters that run and update your ip address on a regular basis so they can keep your domain updated with your most current ip. This works great but then there is the confusion on how to set this up at the server level. So to help those of you with dynamic ip address get started and still run OS X Server, I decided to put together this tutorial. In this screencast I cover two types of services. The first, Dyndns provides a domain name that they let you set up and then provide services to allow remote access. There is a charge for this service and then they don't let you choose your own domain ending without paying an additional fee for hosted services.
The second service by Namecheap, allows you to use any registered domain to handle updating your DNS and this service is free. Namecheap states they do this because they feel you will like their service and move your domain to them. It is a great service that does an excellent job of keeping things up to date and the best part is it's free and you can use your own domain name.
I also cover a couple of apps you can run on your Mac that keeps your ip up to date with these services with IPMonitor being one of the best and easiest to set up for any of the services. I hope you enjoy this screencast and I will look at doing more on Dynamic DNS with things like mail and web hosting which normally isn't available as cleanly as it is when you have a static ip. If you need any help with your own set up feel free to email me. I do server consulting and would love to help!
