DNS-Based Web Filtering Explained

People checking cyber security system from cyber threats

If you’re like most people, you probably don’t think much about the DNS server that directs your web searches. After all, why would you? By the time you’ve checked Facebook or looked up directions to the nearest pizza joint, your search has already finished, and there’s no need to worry about it anymore.

But what if we told you that there was a way to keep yourself away from certain websites and content—to prevent any type of cyber security threat, including yourself from visiting the sorts of sites that can put your financial security at risk? Or that could potentially infect your computer with malware? With DNS web filtering, you can do just that!

With the advent of the Internet, a great deal of information became available to anyone with a computer and an Internet connection. While this has been a boon to society, it has also led to the easy access of inappropriate and infected files that can threaten your business information and cause significant monetary losses.

What Is DNS-Based Web Filtering?

DNS stands for Domain Name System, and it’s the core technology that makes the internet work. When you type in a website like Amazon.com, DNS matches what you typed with the IP address of the actual server on the internet where Amazon’s content is.

DNS-Based Web Filtering is a type of network security that controls what websites can be accessed from your organization’s network. It’s an effective method to guarantee a secure browsing environment. Users’ efforts to visit harmful websites, such as those used for virus distribution or phishing, are blocked using DNS-based filtering. 

Using a DNS filtering service is the best way to ensure that all of your employees are protected from the threats of malware, phishing scams, spam, pop-ups, and inappropriate content.

How Does It Work?

Computers on your network have a unique IP address, and this number identifies them to the outside world. When someone requests information from a website, their computer sends the request to their Internet Service Provider (ISP) with the server’s IP address that it wants to access. The ISP routes the request to the server’s address, and the server sends back the requested information.

If you tell your ISP which web addresses you want to access, they will create rules for these addresses in their DNS servers. If your computer receives a request for an address not on your approved list, it won’t be allowed to send or receive any information related to that address.

If the website they’re trying to access is found to be malicious or highly questionable, they’ll be redirected to a local IP address that contains a DNS block page informing them that they can’t connect. The attempt to visit the website will be recorded using DNS logging, allowing administrators of the DNS-based web filtering solution to review the access attempt and take appropriate action.

Importance Of DNS Web Filtering

Nowadays, DNS filtering is essential for businesses to enforce their network security policies. By blocking access to specific websites (or even whole domains), companies can protect their users from viruses and malware, inappropriate or even illegal content on the internet, and other threats that compromise sensitive information or even cause physical harm.

Businesses Can Use Web Filters To:

  • Restrict malware and ransomware downloads
  • Prevent employees from visiting phishing websites
  • Reduce productivity losses due to cyberslacking
  • Manage bandwidth usage.

IT Consulting Services From Upstart Cyber. Experience You Can Trust!

DNS-based web filtering is a simple and effective way to protect your company, no matter what kind of business you’re running. With Upstart Cyber, you can bring your company up to date with the latest technology and cyber security solutions to protect your network from all kinds of cyber threats. 

We’ll ensure your business stays safe from viruses and spyware and more targeted attacks like phishing websites and malicious content. Some dangers in cyberspace aren’t as easy to spot. There’s no better resource than a cybersecurity expert who can help protect you from every angle.