What Is DNSSEC and How Can We Use It?

In today’s world, where cyberattacks are becoming increasingly sophisticated, securing internet infrastructure has turned into a primary concern. One of the most important of these infrastructures is the DNS service, which many users may not even be aware of. In this article, we aim to introduce one of the key internet security technologies, DNSSEC, and teach you how to use it.

By reading this article, you will not only become familiar with the concept of DNSSEC, but you will also learn step by step how to enable it on your domain. We will also examine the latest developments in this field in 2026. If you care about your website’s security, do not miss this article.

What Is DNS and Why Does It Need More Security?

To explain it simply, every server has its own unique IP address. Users would need to memorize these numerical addresses to access websites, but since remembering such numbers for every site is impossible, DNS is used. DNS is responsible for converting these numeric addresses into simple names (such as mihanwp.com).

The main issue is that in the original design of DNS, there was no authentication mechanism. By default, the DNS system assumes that any response received from a DNS server is valid. This inherent trust is exactly the weakness attackers exploit to redirect users to fake websites.

We previously published a comprehensive article about DNS on Mihan WordPress, which I recommend reading. However, in this article, we want to dive deeper into the DNSSEC security solution.

What Is DNSSEC and Why Should We Use It?

DNSSEC stands for Domain Name System Security Extensions. This technology is essentially a security enhancement for the DNS service that has been standardized by the IETF (Internet Engineering Task Force). The primary goal of DNSSEC is to add a layer of authentication to DNS responses so that users can be assured that the received response truly comes from a legitimate server and has not been tampered with.

Without DNSSEC, an attacker can use a method called DNS Spoofing or Cache Poisoning to redirect users to a fake website. In these attacks, the attacker sends a forged response to the DNS server before the legitimate response arrives, tricking the server into storing it in its cache.

By enabling DNSSEC, all DNS records are digitally signed by the authoritative server using a private key. The receiving server (resolver) verifies the authenticity of this signature using the published public key. If the signature is invalid, the response is rejected, and the user will not be directed to malicious content.

New DNS Security Developments in 2026

In 2026, DNS security has evolved beyond DNSSEC into a multilayered field. One of the most significant developments is the activation of Case Randomization in Google’s 8.8.8.8 service. This technology, also known as 0x20 bit encoding, randomly mixes uppercase and lowercase letters in domain names to prevent attackers from guessing a fixed pattern.

Although Case Randomization provides a good defensive layer, experts emphasize that DNSSEC remains the best protection against Cache Poisoning attacks. Modern attacks such as SAD DNS, discovered in 2020, demonstrated that even advanced port randomization techniques can be bypassed, whereas DNSSEC remains resistant to them.

On the other hand, major companies like Palo Alto Networks have introduced specialized Advanced DNS Security services that use artificial intelligence (Precision AI) to detect malicious domains. These services can even identify and block dangling domains that may be purchased by attackers after expiration.

The DS Record Structure: The Heart of DNSSEC

To understand how DNSSEC works, you need to become familiar with the DS (Delegation Signer) record. This record serves as the bridge of trust between your domain registrar and your hosting provider. The DS record consists of four main parts, explained below:

Key Tag is a 16-bit number (between 1 and 65535) that acts as a key identifier. It helps the server quickly locate the appropriate key.

Algorithm specifies the cryptographic method used to sign the records. Common algorithms include 5 (RSASHA1), 8 (RSASHA256), 13 (ECDSA P-256 SHA256), and 14 (ECDSA P-384 SHA384).

Digest Type specifies the hashing function used to compress the information. Type 1 corresponds to SHA1, and Type 2 corresponds to SHA256, which is more commonly recommended today.

Digest is a long hexadecimal string generated by applying the hash function to the DNSKEY public key. Its length is 40 characters for SHA1 and 64 characters for SHA256.

Prerequisites for Enabling DNSSEC

Before proceeding with activation, you must ensure that two main prerequisites are in place. First, your hosting provider must support DNSSEC. Professional hosting services that use control panels such as cPanel usually offer this capability. In modern cPanel versions, the DNSSEC option is located in the Zone Editor section.

Second, your domain registrar must provide the ability to register a DS record. In Iran, many local registrars offer this feature, but it is advisable to confirm before starting. Additionally, your domain must have an extension that supports DNSSEC. For example, in Greece, this service is currently active only for domains with the .gr extension.

Enabling DNSSEC in DirectAdmin (Popular in Budget Hosting)

DirectAdmin is a lightweight, fast, and cost-effective control panel used by many Iranian hosting providers. Enabling DNSSEC in DirectAdmin is slightly different but still simple. Note that DirectAdmin uses two different DNS components: Bind (for responding to external queries) and Unbound (for internal resolution).

Step One: Check the Prerequisites

First, make sure your hosting supports DNSSEC. In modern versions of DirectAdmin, this feature is enabled by default. Additionally, if you use Unbound as your local resolver, DNSSEC validation is enabled by default.

Step Two: Log in to DirectAdmin and Access DNS Management

Log in to your DirectAdmin user panel. Go to the DNS Management section. This option is usually located on the main page or under the Advanced Features section.

Step Three: Enable DNSSEC for the Domain

In the DNS management page, find your desired domain. Next to it, look for the DNSSEC or Enable DNSSEC option. Click on it. DirectAdmin will automatically generate cryptographic keys for your domain.

If you cannot find the DNSSEC option, let’s review the issue step by step and find a solution.

Why Can’t You See the DNSSEC Option?

The main reason is that DirectAdmin enables DNSSEC by default only at the Admin Level. If you are logged in with a regular user account (User Level), this option will not be visible to you unless specific server configurations have been applied.

This is a design decision by DirectAdmin to prevent regular users from accidentally misconfiguring DNS security settings. Only the server administrator (hosting admin) has full access to this section.

Solution 1: Contact Your Hosting Provider

The simplest and fastest way is to ask your hosting support team to enable it for you. You can tell them exactly this:

“Please enable DNSSEC for the domain [your-domain-name] at the DirectAdmin Admin Level and provide me with the DS records so I can register them at the domain registrar.”

The hosting support team, with admin access, can complete this in less than a minute.

Solution 2: If You Have Admin-Level Access

If you have access to the control panel at the Admin Level, follow these steps carefully:

Step 1: Log in at Admin Level

Log in to DirectAdmin using the Admin account. The admin account is usually accessible with the username admin and the password set during server installation.

Step 2: Go to DNS Administration

Navigate to the Admin Level section. Then find and click on DNS Administration.

Step 3: Select the Desired Domain

From the list of domains, click on your domain to enter its DNS management page.

Step 4: Locate the DNSSEC Option

On the domain DNS management page, look at the top-right area (or top-left depending on your panel theme) for the DNSSEC option. If you cannot see it, make sure you are logged in at the Admin Level.

Step 5: Generate Keys

Click on Generate Keys. A security warning will appear—confirm it.

Step 6: Sign the Zone

After generating the keys, the Sign or Sign your zone option will appear. Click on it.

Step 7: Retrieve DS Records

At the bottom of the page, the DS (Delegation Signer) records will now be displayed. Copy these records. Usually, two records with different Digest Types (for example, SHA-1 and SHA-256) are shown. It is recommended to use the record with Digest Type 2 (SHA-256), as it provides stronger security.

Solution 3: Enable DNSSEC at User Level via Admin

If you want to be able to manage DNSSEC yourself in the future without admin assistance, ask your hosting support team to apply a simple server setting.

The hosting admin must run the following command in the server terminal:

da config-set user_dnssec_control 1 –restart

After executing this command, you will be able to see the DNSSEC option in your own DNS management section as a regular user.

Important Note: DNSSEC in Multi-Server Setup

If your hosting uses a Multi-Server setup (meaning your DNS is synchronized across multiple servers), you must ensure that the value dnssec=1 is set in the directadmin.conf file. Otherwise, DNSSEC may not synchronize properly across all servers.

Quick Reference

• You have admin access: Follow the steps in Admin Level → DNS Administration → Generate Keys → Sign.
• You do not have admin access: Ask hosting support to enable DNSSEC for you.
• You want to manage it yourself permanently: Ask support to enable user_dnssec_control=1.

After receiving the DS records, register them in your domain registrar’s panel (such as NikServer, Abriyon, etc.) in the DNSSEC management section. Then wait 1 to 24 hours for the changes to propagate worldwide.

Step Four: Obtaining the DS Records

After activation, a page containing key details and DS records will be displayed. Similar to the previous steps, copy the DS records (usually two records with different Digest Types). Select the record with Digest Type 2 (SHA-256).

Important note in DirectAdmin: If your domain is a subdomain (such as host.domain.com), you must add the DS records in the parent zone (domain.com), not in the subdomain itself. Some experienced DirectAdmin users believe that subdomains should not have separate DNS zones and that their records are better placed within the parent zone.

Transferring the DS Record to the Domain Registrar

Now it is time for the most important step. Write down the DS record information (including Key Tag, Algorithm, Digest Type, and Digest) in a note. Then log in to your domain management panel on your domain registrar’s website.

Find the DNSSEC Management or DS Record Management section. In this section, select the Add DS Record or Add New option. The four fields you see correspond exactly to the four parts you received from cPanel.

Enter the values in order and then save them. Your registrar’s page may ask you to enter the record as a single complete string. In that case, the record will look like this:

mihanwp.com. IN DS 42586 5 2 5E6979DA9B796B24417DB16552E196BA620DA1E4DB48B476A850CEFFD41F3678

Final Verification and Troubleshooting

After adding the DS record, you must wait between 1 and 24 hours for the information to propagate worldwide. To ensure the configuration is correct, you can use the online Verisign DNSSEC Analyzer tool. Simply enter your domain name, and the tool will step-by-step verify the DNSSEC validation path for you.

If you receive an error message such as “DNSKEY missing” or “RRSIG expired,” it means your configuration is incomplete. The issue is usually due to a mismatch of information between the hosting provider and the registrar. Recheck the DS values and make sure no characters are missing.

Important note: If you plan to change your hosting provider, be sure to disable the DS records at the registrar before changing the DNS. Otherwise, your domain may become inaccessible for a period of time.

DNSSEC vs. SSL; Differences and Complementary Roles

One common question is whether DNSSEC replaces SSL. The short answer: No. These two technologies complement each other. SSL/TLS (the green lock icon in the browser) encrypts the communication between the user’s browser and your website server, preventing data interception. However, SSL cannot guarantee that the user initially connects to the correct server.

DNSSEC operates at a higher layer. It ensures that when a user enters the address mihanwp.com, they are directed to the correct IP address of that site—not to a fake server. After DNSSEC verifies the routing authenticity, SSL secures the communication. For complete security, you need both.

The Future of DNSSEC and Its Position in 2026

Despite its many advantages, DNSSEC adoption is unfortunately still lower than expected. Global statistics show that only about 30 to 40 percent of valid domains use DNSSEC. The main reasons are the complexity of setup and the lack of awareness among website administrators.

However, the good news is that major providers such as Google Public DNS (8.8.8.8) and Cloudflare (1.1.1.1) strongly support DNSSEC. Additionally, control panels like cPanel have made the activation process much simpler than in the past. It is predicted that in the coming years, DNSSEC will become a security requirement.

My best recommendation is that if your website stores user information (such as an online store, user panel, or forum), you should definitely enable DNSSEC. This not only enhances security but also builds trust with users and search engines.

Conclusion

I hope this article has been helpful for you. As you have read, DNSSEC is one of the most effective ways to combat DNS Spoofing and Cache Poisoning attacks. By enabling this service, you can ensure that users are not redirected to fake websites.

Remember that enabling DNSSEC requires two separate steps: first on the hosting server and second at the domain registrar. Perform both steps carefully, and after completion, always verify the configuration using online tools. If you encounter any issues at any stage, your hosting provider’s and registrar’s support teams can offer further guidance.

Take your website security seriously and enable DNSSEC today. Wishing you success and prosperity. 🙂

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