The Internet is made up of many features that make up its whole. There are many nomenclatures that we can find in its different tools. Sometimes they can be confused. For this reason, in this article we are going to talk about the differences between DNS and DDNS . We will explain what each one means and what its function is within network connections.
What is DNS
First, we will explain what DNS is. Let’s talk about what these acronyms that we see so much on the Internet mean. We could translate it into Spanish as the domain name system. It is a naming system for devices connected to the network, either the Internet or a private network, using IP.
Basically its function is to associate the information of the domain names to a series of numbers, which would be the IP address. That is, instead of writing an address with numerous numbers and that would be difficult to remember, we can simply put the web address with more recognizable names, such as this article, Google, etc.
Therefore we can say that DNS act as “translators” in some way. It allows users to put the name of the web page, something that we are used to doing and that we can easily remember, instead of having to enter a long IP address that would be much more difficult to memorize.
If there were no DNS servers, we would have to write each of the IP addresses by hand each time we wanted to enter a web page. Without a doubt this would generate a lot of confusion, errors when putting a number that is not, etc. Our browsers, when entering the web address, what they do is make a DNS request to a server. Those servers are responsible for responding to the request and showing the expected results, which in this case is the page we are trying to access.
Beyond this, we can find different types of DNS servers. These servers can be primary, secondary, or local or cache. We can also say that DNS is a global directory, as if it were a phone book.
Also keep in mind that not all DNS servers are the same and work the same way. We can find some better options and therefore it is advisable to use. We leave you an article where we talk about the best DNS services .
What is DDNS
On the other hand we have the term DDNS . Sometimes it gets confused. We can say that it is a DNS extension. However it has a key difference to understand all this. As we have seen, DNS servers are a global, fixed directory, something static that does not change. However, DDNS has a different procedure. In this case the allocation of IP addresses are dynamic and point to specific domains. What this does is automate the coordination with the DNS databases of the Internet provider.
The function of the DDNS is to detect possible modifications that are carried out in the IP address and to update the DNS records, in short.
We can say that the process works as follows: first, the router informs the DDNS service about the IP address assigned by the Internet provider. What it does is classify the name and therefore that domain is available. Later, if some time passes and the IP address has changed, the DDNS service automatically obtains that new IP address.
The utilities of DDNS are various. For example, it allows us to access our computer from anywhere through a remote desktop, manage multiple operating systems on the same device, offer streaming content or access other services.
In short, as we have seen there are differences between DNS and DDNS. These are two terms that can sometimes seem similar and confused, but nevertheless there are differences, as we have seen.
We leave you an article where we explain how to change Windows 10 DNS servers .
