DNS Security Measures

The Domain Name System is the standard for practically every web application and network services meaning that you simply must ensure that your DNS security measures are as strong as they can possibly be.

If you fail to do so then there is a real danger that cybercriminals would attack your databases to either lock them up and request a ransom or steal valuable data that can be sold on the blakc market and result in further spam attacks on you and those you correspond with.

DNS Security Objectives

In most case, DNS security attacks can be split into two separate groupings:

  1. Web browsers apps, and services that bring web users to an alternative web page to the one you were actually requesting. These include DNS spoofing, DNS hijacking, etc.)
  2. Attacks that attempt to take over control of web pages via DNS response traffic. Examples of these include DNS amplification attacks, DNS DDoS attacks, etc.

Potentially cybercriminals could take aim at unsecured DNS servers to bypass the robust security measures (DNS tunneling) or initiate Phantom Domain Attacks to impact network integrity.

Making Your DNS Safe

Here we detail the strongest DNS security measures that you should implement to protect Domain Name Servers that do not already have authentication or encryption. Using measures like this will result in a multilayered, zero-trust DNS security suite for your group. Even by investing in two of the three DNS security tactics will take on most DNS security attacks. These are the DNS security that security specialists advise you use:

  • DNS over HTTPS: DNS over HTTPS is similar to DNS over TLS aside from hiding encrypted DNS queries and responses inside other HTTPS traffic.
  • DNS over TLS: DNS over TLS encrypts plain text queries to stop third party attacks and hackers recording what sites a certain browser or application is using.
  • DNS Security Extensions (DNSSEC): DNS security extensions employ digital signature key pairs to authenticate if the reply to a DNS query is sent from the proper recipient.

Along with this you can invest in a DNS filter to prevent your network from being taken over if a member of your staff logs onto spam websites that have authentic IP addresses – resulting in the downloading of malware to your network or theft of company log-in credential. A DNS filtering solution will search web traffic to stop any questionable in relation to security being allowed to happen.

DNS security measure will give you additional control, which is granular in nature, and permit you to whitelist some incoming emails, websites, etc so that your company does not suffer any lag when it comes to doing business with existing and potential clients.


How can a DNS Filter improve security?

A DNS filter will block access to known malicious web pages, such as those used for phishing or malware delivery. A web filter can block risky categories of websites, such as hacking forums and peer-2-peer file-sharing networks. It is also possible to block the downloading of certain file types, such as software installers and other executable files associated with malware.

Is it complicated to set up a DNS filtering solution?

A DNS filter is quick and easy to set up. Once you have started a free trial or have purchased the solution, you just need to point your DNS to the service provider’s servers – a process that takes under a minute. You can then use a web-based portal to apply your policies for the organization, user groups, departments, or individuals. The whole process will take less than 30 minutes.

Can a DNS filter protect remote workers?

Yes. In addition to protecting users of wired and wireless networks on-premises, it is possible to install an agent on individual devices to extend the protections of a DNS filter to all corporate-owned devices and personally owned devices if you have a BYOD policy.

How much does a DNS filter cost?

The cost of a DNS filter will vary from service provider to service provider, with a price range of $1 to $5 per user, per month. For most organizations, a DNS filter at the lower end of that price bracket will provide the protection they need.

What companies offer DNS web filters?

Many cybersecurity companies have developed DNS-based web filtering solutions, with the top-rated solutions including WebTitan by TitanHQ, Cisco Umbrella, and Forcepoint Web Security Cloud. Many Managed Service Providers also provide a DNS filtering service.

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