Comodo secure dns

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Web Access Control, Protection and Visibility Anywhere, Any Device!

What is Comodo Secure DNS?

Comodo Secure DNS is a domain name resolution service that resolves your DNS requests through our worldwide network of redundant DNS servers, bringing you the most reliable fully redundant DNS service anywhere, for a safer, smarter and faster Internet experience.

Secure Internet Gateway via Secure DNS

Comodo Secure Internet Gateway is the ultimate DNS-based security as a service solution, relying on the Comodo Secure DNS which has been a reliable, fully redundant, worldwide DNS service since early 2000s and Comodo Web Filtering providing web access control, protection and visibility, for any device, anywhere!
Check Use Cases documents to see all the features Secure Internet Gateway provides you with and Testimonials to see how Enterprises and MSPs of all sizes uses Secure Internet Gateway to protect their companies, enhance their services, and have that edge on their competitors!

Secure DNS Public Servers vs. Comodo Secure Internet Gateway Servers

Secure DNS public servers below will help you enjoy a safe, smart, and fast Internet experience. –
Simply change your DNS to these servers

Comodo Secure Internet Gateway, on the other hand, will enhance that experience with customizable advanced protection, web-filtering, off-network protection and much, much more! –


Windows 7 / Vista - Manually Enabling or Disabling Comodo Secure DNS Service

You can manually enable or disable the Comodo Secure DNS service by changing your DNS server addresses to:

  • Preferred DNS :

  • Alternate DNS :

Enabling Comodo DNS in Windows 7 / Vista


Disabling Comodo DNS in Windows 7 / Vista

Enabling Comodo DNS in Windows 7 / Vista

  1. Open the control panel by either selecting it from the Windows 'Start' menu or by typing 'control panel' into the search box then clicking the program name.

  1. From the control panel menu, select 'Network and Sharing Center' (Windows 7) or 'Network and Internet (Vista):


  1. In the Network and Sharing center, click the connection type next to 'Connections' (Windows 7):


or 'View Status' (Vista):


  1. This will open the 'Local Area Connection Status' dialog. Click the 'Properties' button:


At this point, Windows might ask for your permission to continue or request that you enter an Administrator password.

  1. Once you have granted permission/entered an admin password, you will be presented with the 'Local Area Connection Properties' dialog. Scroll down the list and select 'Internet Protocol Version 4 (TCP/IP)' then click the 'Properties' button:

  1. Enable 'Use the following DNS server addresses'. Doing so will allow you to enter the addresses of Comodo DNS servers in the fields provided. Enter the addresses listed below then click 'OK' to activate your settings:

  • Preferred DNS :

  • Alternate DNS :


Your computer will now use Comodo DNS as it's default domain name resolution service for all applications that connect to the Internet.


Disabling Comodo DNS in Windows 7 / Vista


To disable Comodo DNS, you need to instruct Windows to automatically obtain the address of a DNS server. Doing so means you will use the DNS server provided by your ISP. To do this:

  • Enable 'Obtain DNS server address automatically' then click 'OK'.


Note: Alternatively, you can enter the server addresses of a different DNS service before clicking 'OK'

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Router - Enable Comodo Secure DNS Service


You can manually enable or disable Comodo  Secure DNS service in your Router by modifying the DNS settings accessible through DNS Server settings of your router. Comodo recommends making the change on your router so that with one change, all the computers on your network can benefit from Comodo Secure DNS.


To enable the Comodo Secure DNS service, modify the DNS server IP address settings to Comodo Secure DNS server IP addresses. The IP address :

Primary DNS :

Secondary DNS :

To stop Comodo Secure DNS service  

To modify the DNS settings

  1. Login to your router. To log in and configure your router, you can open it up in your web browser. If you don't know the IP address for your router, don't worry, it is typically one of the following:

    If you have forgotten your router's username and/or password, the most common username is "admin" and the password is either blank, "admin", or "password". If none of those work, you can often reset the password to the manufacturer default by pressing a button on the router itself, or in some cases access without a password if you try to access your router quickly after you've cycled the power to it.

  1. Find the DNS Server Settings. Look for "DNS" next to a field two or three sets of numbers (these fields may be empty).

  1. Select the Use these DNS Servers, type the Comodo Secure DNS Server settings as your DNS server settings and click 'Save'/'Apply'.

Primary DNS server address for Comodo Secure DNS is:

Secondary DNS server address for Comodo Secure DNS is:

When you are done, the above example would look like this:


You can disable Comodo Secure DNS by: 

  • Deselecting the check box 'Use these DNS servers' address automatically'. This means that you use the DNS server provided by your ISP. This is the option that most home users should choose if they wish to disable the service.


  • Entering different preferred and alternate DNS server IP addresses.
Changing Windows 10 DNS settings to Comodo Secure DNS

Comodo knows its way around Internet security and has a raft of products for that segment. It leverages its knowledge of the dark alleys of the Internet to offer a handful of DNS services; a public DNS service and a DNS-based filtering solution, for deployments (and wallets) of all sizes.

Plans and Pricing 

Comodo’s DNS offerings can be classified into two broad products. There’s the public DNS service called Secure DNS that anyone can use for free. Then there’s the Secure Internet Gateway (SIG) that adds a lot more management functionality over the public DNS service.

SIG itself has multiple editions. There’s SIG Gold, which is available for Free and can answer upto 300,000 DNS requests per month. This should be good enough for most home users and even some small office networks, in our opinion. This is the version we’ll be reviewing in this article.

Besides this, there's also SIG Platinum that doesn’t have a cap on the number of DNS requests and also adds some Enterprise-specific features to the product. SIG Platinum is packaged for both Enterprises as well as MSPs (Managed Service Providers). The MSP edition has slightly more features than the Enterprise edition to help service providers manage multiple deployments.

The SIG Platinum for Enterprises costs $2.45/user/month for up to 99 users if paid monthly. There’s a slight discount if you pay for the entire year, and the prices per user will also come down as the number of users go up.


Comodo doesn’t talk much about its free-for-all Secure DNS service. It only mentions that the service relies on Comodo’s worldwide network of redundant DNS servers.

By contrast, there’s lots more information about the Comodo SIG service. Comodo points out that SIG uses load-balanced Anycast DNS servers that are geo-distributed across more than 25 countries. 

All editions of SIG including the free Gold version have the ability to customize various aspects of their DNS protection and can also protect laptops and mobile devices while they are connected to unfamiliar networks.

SIG can block phishing, malware domains, and malicious sites, and can also tackle botnets, Command-and-Control callback events, spyware, and various other types of web-based attacks. 

All SIG editions can be managed using a cloud-based dashboard. You can use the interface to create web filtering rules from over 80 predefined content categories that Comodo claims are updated with millions of new domains every couple of hours. The dashboard will also give you real-time information about the protected devices even when they are not connected to the home network. You’ll also be able to customize the block pages with your logo and custom messages.

SIG Platinum offers additional features. In addition to being able to resolve an unlimited number of DNS queries, you also get the ability to create policies based on the IP addresses of the connected devices, a subnet, and more. SIG Platinum will also enable you to monitor individual devices based on their IP, and will also encrypt all DNS traffic. 

Interface and Use

Using the free service is pretty straightforward. Just point your router to the public DNS servers ( and and you’re good to go.

The process for setting up and deploying SIG is a little more involved, even for the Free package. Once you’ve signed up and selected the Gold edition, you’ll be taken through a small wizard to configure the network. You can skip the wizard and configure the network manually, but it’s a good idea to stick to the wizard if you haven’t read through SIG’s documentation.

The wizard will ask you to enter the Public IP address of your network. It will automatically detect the current IP, though you can also enter one manually. You’ll then be shown the recommended rule-set that has everything enabled by default. As always you have the option of updating your security policy to include or exclude from several other categories at a later stage. 

Once you’ve configured the policy, make sure you change the DNS server of the router to that of the SIG ( 

The landing page on Comodo’s dashboard gives you an overview of the web browsing behavior across your network. The collected information is displayed in about three dozen widgets. Switch to the Security Overview section to get useful insights into any security-related incidents. 

You can click through some of the widgets on the dashboard to get more details about a particular aspect. However to get detailed insights, jump to the Reporting section, which keeps tabs on various important aspects of your browsing sessions. For instance, you can view the domains that were blocked most often, the most frequently visited domains by smartphone users, security threats on roaming devices, and more.

The good thing about SIG is that it enables you to enjoy the protection of your security policy even when you are roaming and connected to an untrusted network like in a hotel. For this you’ll have to download and install agents in your Windows and macOS devices. Similarly, you can extend the protection to Android devices by installing SIG’s mobile agent together with its VPN profile. The process of rolling these out is fairly simple and well-explained in the brief illustrated documentation that’s accessible from the dashboard itself. 

Final Verdict

There’s little information about Comodo’s public DNS service and it isn’t benchmarked by either. The service is however tested by the DNS Performance Test script, which queries many of the popular public DNS services from your location. 

In our tests, Comodo’s public DNS fared a lot better than both Quad9 and Cloudflare DNS, but lagged behind several others including Google Public DNS, OpenDNS, CleanBrowsing and others. There’s also no information on whether the service uses any kinds of encryption like many of its peers.

SIG Gold clearly mentions that it doesn’t encrypt DNS traffic, though it offers interesting web filtering options. That said, it’s viable only if you can stay within its threshold of 300,000 DNS queries. On the other hand, SIG Platinum uses encryption and is meant for enterprise users and is reasonably-priced if you don’t use any other gateway product to control Internet access. 

All things considered, if you’re looking for a pure DNS service, then you’ll find there are several better options than Comodo Secure DNS, especially in terms of security and privacy. However, if filtering traffic at the DNS level is important to you, then both Comodo SIG Gold and Platinum are viable options.

Prices - Comodo Secure DNS:▼

With almost two decades of writing and reporting on Linux, Mayank Sharma would like everyone to think he’s TechRadar Pro’s expert on the topic. Of course, he’s just as interested in other computing topics, particularly cybersecurity, cloud, containers, and coding.


Dns comodo secure

Comodo SecureDNS 2.0

Comodo SecureDNS is a domain name resolution service that resolves your DNS requests through our worldwide network of redundant DNS servers, bringing you the most reliable fully redundant DNS service anywhere, for a safer, smarter and faster Internet experience.

Best free protection available

As a leading provider of computer security solutions, Comodo is keenly aware of the dangers that plague the Internet today. Secure DNS helps users keep safe online with its malware domain filtering feature. SecureDNS references a real-time block list (RBL) of harmful websites (i.e. phishing sites, malware sites, spyware sites, excessive advertising sites, etc.) and will warn you whenever you attempt to access a site containing potentially threatening content. Directing your requests through highly secure servers can also reduce your exposure to the DNS Cache Poisoning attacks that may affect everybody else using your ISP.

Website content filtering, now in beta

Secure DNS 2.0's new dashboard, available to beta users, makes it simple to set content filters at a network level to help prevent unwanted content from being accessed in your home or network. To enable, simply add your network and set the categories of domains you wish to block. Customize your preferences from more than 25 categories, including proxy and anonymizer blocking.

Content filtering is in closed beta.Apply to join our beta for early access and help to shape our product.

Switch now—no account needed

  • Use SecureDNS 2.0 without an account.
    It's quick and easy.
  • Simply change your DNS server settings to and
  • See our switch guide for more details.

Register to try new features

  • Sign up to apply for beta access.
  • We'll notify you when you can create an account.
  • Configure your network preferences.
  • Change your DNS server settings to Comodo.
  • You're done.
Comodo Internet Security Review - Test vs Malware


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