Dynamic DNS (DDNS) – Why use it?

DDNS or Dynamic DNS is a DNS service that can be useful to many. It is an automatic method for updating IP addresses that saves you from having a banned IP address that you can’t use or a paid static IP address, that might be very expensive.

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SOA record – Why is it important?

There are many different DNS records. Some are very specific. Others are common and exist in any DNS. SOA record is one of these common, always present DNS records. Let’s see what it does and why it is so important to have it!

What is the SOA record?

SOA record is a key DNS record that indicates the start of authority. The authoritative name server (authoritative NS) is the top source of DNS information. It is the first DNS record that a zone file contains and sets the general properties of that zone. It also has more details about the zone transfers like the refresh rate, the retry rate, and who is administrating them (admin email).

Usually, DNS servers work together in a cluster. Those servers need to synchronize their zone file. For this purpose, they need to perform a zone transfer. The SOA works as a control record with a serial number and indicates the latest update. When the secondary servers (slaves servers) see that the number has changed, they will update and get the new data.

What is a zone transfer?

DNS has a hierarchy structure, where the date is organized by DNS zones. Those DNS zones have DNS zone files that contain the full information for the zone, including a SOA record.

The DNS usually has more than one DNS server. One is the primary DNS server, and the rest are secondary DNS servers.

The primary has the zone file, and all the changes happen inside it. The data from it must be propagated to the rest. This happens through a zone transfer. The zone transfer is a process of updating the zone file in the secondary DNS servers through IXFR zone transfer (partial transfer of changes only) or AXFR zone transfer (full transfer of all DNS records).

Why do you need a SOA record?

You need a SOA record to indicate the authoritative name server and to perform zone transfers. Each zone must have a SOA record, and there should be just one SOA record per zone. Without a SOA record or with multiple per zone, your zone won’t function.

What does a SOA record include?

A SOA record includes the following elements:

  • Name – Zone’s name
  • Type – SOA
  • Primary name server – The hostname of the primary name server for the zone.
  • Admin’s email – A contact information of the administrator of the domain’s zone file.
  • Serial number – The zone’s serial number. The secondary DNS servers will check this value and determine should they update the zone file or not.
  • Refresh rate – This is the time in seconds that the secondary name servers wait until they check again for changes.
  • Retry rate – If the zone transfer between the secondary DNS servers and the primary fails, this is the time the secondary servers will continue trying to update. If the times expires, the secondary servers’ data will be outdated, and they will stop answering queries.
  • Default TTL – A TTL value for all DNS records in the zone file. It indicates how long time the secondary servers should keep the data in the cache memory.

The parameters could have different names, depending on your DNS provider, but the functions will be the same. For example, Primary NS could be written MNAME, the retry rate could be just RETRY, and so on.

SOA record vs NS record

Some novice DNS administrators have trouble distinguishing the purpose of NS records and the SOA records.

The NS records’ purpose is to redirect DNS servers to the following DNS server that has the needed information for the next zone.

The DNS server cluster uses the SOA to update and sync data. Update the secondary DNS servers with data from the primary DNS server.

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CNAME record – everything you need to know

Now we will check one of the basic DNS records – CNAME. Why do you need CNAME records, how to use them, and are there any alternatives? You are about to find out! 

What is a CNAME DNS record?

CNAME, the “c” stands for “canonical”, and the rest is “name”. You can use it to show that one domain name is just another way of showing another domain (it is an alias for the canonical domain). The canonical means it is the “true” domain name. 

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The best web hosting solution for me – how to choose it?

When you have a business and plan to jump online, there are many critical decisions—the website’s design, logistics, strategy for promoting, and of course, choosing the best hosting solution.

There are a large number of hosting providers. You must know the objectives correctly and, therefore, your business’s real needs. The needs of a blog or portfolio site are very different from those of an e-shop. One will require so much more resources to manage more traffic, media files, etc.

Here you have some useful tips for choosing the best web hosting solution.

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Benefits of using Managed DNS

The DNS is magic, is essential, is the reason why the internet is possible! 

It answers users’ queries of all sorts and finds the real addresses of the sites we love. 

There is no doubt that we need it on a global scale, but do we need it for our websites? Yes! And the easiest way to get it is through a Managed DNS provider. 

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Why do you need DDoS protection?

You need DDoS protection because of the DDoS attacks, duh! With all seriousness, there are intentional cyber-attacks that hackers direct at websites or applications and use different weaknesses of the DNS. Those attacks are known as DDoS attacks, and you need special protection to keep your site afloat when they happen. Cause it is not a question of if, it is a question of when! 

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How to clear space on your Android phone?

Every day, smartphones are more sophisticated. But despite their success, not everybody is interested in having the most innovative and expensive phone every year. 

Those millions of users who happily own useful but less advanced devices suddenly can face the need to download a new app for banking, navigation, or getting video calls. They press the download button, and a message appears “insufficient space”! 

Well, if it’s your case, don’t suffer! You don’t have to buy a new phone in a hurry. Just try to free up space on your Android phone with the following suggestions.

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WordPress 5.5 “Eckstine” – latest updates

WordPress, the worldwide popular and open-source content management system (CMS), released its new version, WordPress 5.5 “Eckstine”. The name honors William C. Eckstine, an American pop and jazz singer. 

This time, “Eckstine” involved upgrades in three critical areas: security, search, and speed. So let’s see what is new on it!

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Windows 10’s October update 2020 – what’s new?

The new update of Windows 10 is here. The latest version is called October update 2020 or version 20H2. It is the second of the two big updates that Microsoft had planned for 2020. 

It is a free update for users of previous Windows 10.

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Linux Manjaro – how to install it?

This is a short, step-by-step guide for anyone who wants to install Manjaro. The goal is to download, install, and start using Manjaro, a Linux distribution. 

What is Manjaro Linux? 

Manjaro is an open-source and free Linux distro. It is based on another popular distro called Arch Linux. The OS is user-friendly, and you can choose the user interface you like (Xfce, KDE, GNOME, etc.). 

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