Many of you came to this article because you want to make available a particular service from your home or office on the Internet. Dynamic DNS will serve you this purpose! It is easy to implement, and it will save you money, and it could even be free if you don’t require a lot of resources. Do you want to learn more?
What is Dynamic DNS?
Dynamic DNS (DDNS) is a DNS service that allows you to create a hostname for a device and link it to its IP address. It is a simple A or AAAA record so far. The Dynamic part comes from the fact that you can set up your router to report changes in this device’s IP address and send an update message to the DNS server where the link was made. There the hostname’s IP address will be updated. It is a way to automatically update the IP address of a device and provide availability with the need of human effort. You can set up the Dynamic DNS and be sure that the service you are running will be available.
If you are not using this DNS service and want to use a device to provide a service, you could have the following problem. The Internet Service Provider (ISP) that you are using will eventually update your IP address using a dynamic method like DHCP. As a result, you will get a new IP address, and all the clients need to get it to reconnect. Unfortunately, if you are not near the device, you might not know the new IP address and experience long downtime.
You can also pay for a static IP address and provide service from your device without worrying that the IP address will change. In this case, there are two problems. First, it cost more than a Dynamic DNS. Second, if your IP address is always the same, hackers could easily target your device. They will know it and try everything to exploit it in different ways. Not a good scenario. What do you think?
Why should you implement Dynamic DNS?
The main reason is very simple – Dynamic DNS is the cheaper option to make something available online. Yes, you can get static IP addresses for each of the connected devices that you want available, but how much will this cost? The IPv4 addresses are getting very scarce and quite expensive. So, if you are wondering, even if you pay for a DNS service plan, it will still be a lot cheaper than paying for static IP addresses.
The second important point is that it is relatively easy to use. Setting up Dynamic DNS is like setting anything on your router. You go to the setting and input what is needed. On the other side – the DNS, it is also very quick and straightforward to create an account on a DNS site, and later, create a new host.
So, basically, Dynamic DNS is an economical and easy-to-use alternative to the paid static IP addresses.
You have just learned what is Dynamic DNS and what are its most important advantages, compared to static IP addresses for your host. Should you use it? In most cases, using it will save you money and will work fine, so definitely consider it. The only concern is that the Dynamic DNS is only good as the DNS provider. If you can’t afford downtime, think well, which DNS provider you should choose.