Ensuring the security of your business's online activities is crucial, and it requires a multilayered approach. One effective way to enhance your cybersecurity is through DNS filtering. But what exactly is DNS filtering, and why is it important for small businesses? Let’s break it down in simple terms.

Firstly, what even is DNS?

Before we dive into DNS filtering, let's start with what DNS means. DNS stands for Domain Name System. Think of it as the phonebook of the internet. When you type a website address (like www.example.com) into your browser, the DNS translates that address into an IP address (a series of numbers) that computers use to identify each other on the network. This process allows you to visit websites without having to remember complex numerical addresses.

So then, what is DNS filtering?

DNS filtering is a technology that blocks access to certain websites based on their domain names. It works by using a list of blocked or allowed websites. When a user tries to visit a site, the DNS filter checks this list and decides whether to allow or block the access.

Imagine you have a list of phone numbers you don't want to call. DNS filtering works, similarly, but instead of phone numbers, it deals with websites. By filtering out harmful or inappropriate sites, DNS filtering helps keep your internet browsing safe and productive.

Here's a step-by-step look at how DNS filtering works:

1. Request: When you type a website address into your browser, your computer sends a DNS request to find the IP address of that site.
2. Check: The DNS filter intercepts this request and checks the address against its list of blocked or allowed sites.
3. Decide: If the website is on the blocked list, the DNS filter stops the connection and displays a message saying the site is restricted. If the site is allowed, the DNS filter lets the connection go through as usual.

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Why is DNS Filtering Important for Small Businesses?

DNS Filtering by itself won't keep you 100% safe, but leveraging this type of technology can work in conjunction with other cybersecurity products to build a multilayered protection strategy. Some key advantages are:

1. Security: DNS filtering protects your business from accessing malicious websites that could lead to malware, phishing attacks, or other cyber threats. By blocking these sites, you reduce the risk of infections and data breaches.
2. Productivity: It helps maintain productivity by restricting access to distracting or non-work-related sites. Employees can focus on their tasks without the temptation of browsing social media or other leisure sites during work hours.
3. Compliance: For businesses that need to comply with industry regulations, DNS filtering helps enforce policies on acceptable internet use. This ensures that your employees adhere to standards and guidelines necessary for your business sector.
4. Ease of Use: DNS filtering is easy to implement and manage. It doesn’t require installing software on individual devices, making it a hassle-free solution for small businesses.

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How to Implement DNS Filtering

1. Choose a DNS Filtering Service: There are many DNS filtering services available, such as OpenDNS, Cisco Umbrella, and Cloudflare Gateway. Research and choose one that fits your business needs.
2. Set Up Your Network: Follow the service provider's instructions to set up DNS filtering on your network. This typically involves changing your DNS server settings to point to the filtering service.
3. Configure Policies: Define your filtering policies. Decide which types of sites you want to block (e.g., adult content, gambling, social media) and any specific sites you want to allow or block.
4. Monitor and Adjust: Regularly monitor the filtering service’s reports to see which sites are being accessed and blocked. Adjust your policies as needed to ensure optimal security and productivity.

Want some guidance to see if DNS Filtering is right for you? Book in a Business Technology Assessment with one of our Solutions Team members!

Checklist for Choosing the Right DNS Filtering Product

With so many options making the right choice for you and your business is important. Comparing products like DNS Filter, OpenDNS, Cloudflare, Cisco Umbrella and many more can be a daunting process. You may want to lean on your technology partner for advise on what is the best product for your needs, but if you want to compare yourself then you may want to consider the following:

• Security Features: Does the product offer comprehensive protection against malware, phishing, and other cyber threats?
• Customisation: Can you customise the filtering policies to suit your business needs? Look for products that allow you to block specific categories or individual sites.
• Ease of Use: Is the product easy to set up and manage? Look for solutions that offer a user-friendly interface and simple configuration.
• Reporting and Monitoring: Does the product provide detailed reports and real-time monitoring? This can help you understand and manage your internet usage effectively.
• Support and Reliability: Does the provider offer reliable customer support and service uptime? Good support is crucial for resolving any issues quickly.
• Scalability: Can the product scale with your business as it grows? Ensure the solution can handle an increasing number of users and devices.
• Compliance: Does the product help you comply with industry regulations and standards?
• Cost: Is the product cost-effective? Consider the total cost of ownership, including any hidden fees or additional charges.

By considering these factors, you can choose the DNS filtering product that best meets the needs of your business.

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