Sure, the terminology between DNS filtering vs web filtering comes with a few similarities, but that isn’t what I’m here to focus on. Whereas DNS filtering controls domain requests and blocks access, web filtering takes a broader look at web activity as a whole.
The reason their differences matter is that they can have a pretty big effect on how you approach your network security strategy. Throughout this article, you’ll learn about the unique lanes between DNS filtering services and web filtering solutions.
Key Takeaways:
- DNS filtering focuses on controlling access at the domain level
- Web filtering offers more granular control over websites and online content
- The two approaches differ in how they inspect and manage web activity
- Companies should combine both technologies as part of their layered security strategy
- Network size, users, devices, and security requirements can shape filtering decisions
DNS Filtering vs Web Filtering for Your Network Security Architecture
First, I want to note that DNS filtering and web filtering services are individual components of your layered security architecture. A good example of this can be seen in companies that blend filtering tech with their firewall hardware.
Moreover, you have to keep in mind that filtering requirements are going to vary from one organization to the next. While these services are fairly easy to integrate, that doesn’t mean you should approach it from a copy-and-paste perspective.
IT teams will want to account for things like deployment, admin needs, policy consistency, and of course, ongoing network maintenance. Nevertheless, discovering whether you could benefit from one or both of these solutions starts with an understanding of what makes them unique.
What is a DNS Filtering Service?
At its core, DNS filtering evaluates domain requests. This is done before allowing a device to connect to the requested destination. In addition to this, it gives your operation a centralized way to manage internet access. Not only across users, but across devices and distributed networks as well.
Here are a few details about DNS protection solutions you’ll want to understand:
- How It Works: Operates at the DNS lookup stage rather than examining the website itself
- Security Capabilities: Can stop connections to command-and-control domains used by compromised systems
- Access Control: Can enforce policies regardless of which browser gets opened
- Deployment and Management: Can protect roaming devices when configured to use the filtering provider remotely
- Visibility and Reporting: Can reveal patterns such as repeated attempts to reach destinations that are restricted
Another angle I want you to focus on here is the reporting that stems from this. This gives your IT team insight into details like requested domains, blocked activity, and more. Now it’s time to ask the question: what makes web content filtering solutions any different?
What is Enterprise Web Filtering?
Having web filtering as a part of your security strategy is a must. I’m also not talking about some over-the-counter, run-of-the-mill approach you might use at home. Web filtering solutions for enterprises give you granular control over employee internet activity.
Here’s what that looks like through a quick comparison:
- How it Works: Examines web destination and traffic characteristics to apply access policies
- Security Capabilities: Can identify and restrict risky or inappropriate online content
- Access Control: Supports detailed rules based on users, groups, websites, and even content categories
- Deployment and Management: Gives admins centralized tools for managing policies and exceptions
- Visibility and Reporting: Provides deeper insight into browsing activity as well as policy enforcement
If you ask me, this comparison isn’t about determining which option is the best here. Your business network needs support on both sides here. The good news is that solutions for both aren’t hard to find at all, as it’s commonplace among a lot of next-gen firewall architectures.
Comparing DNS Filtering vs Web Filtering
Above all else, what you want to keep in mind here is that DNS and web filtering differ in how they evaluate online activity. DNS filtering generally focuses on the destination being requested, while web filtering considers additional characteristics of web requests, including content. Give the table below a quick look for an easy reference on the differences between the two.
| Comparison Angle | DNS Filtering | Web Filtering |
|---|---|---|
| Inspection Point | Evaluates the requested domain during DNS resolution | Focuses on web requests and associated traffic |
| Policy Granularity | Primarily applies rules to domains and categories | Can apply rules to URLs, content, apps, and categories |
| Encrypted Traffic | Can make filtering decisions without inspecting page contents | Capabilities depend heavily on traffic inspection |
| User-Based Policies | May require identity or endpoint integration | Often supports more detailed user and group policies |
| Application Control | Primarily provides domain-level control | Can offer greater control over specific web apps |
| Resource Requirements | Generally lightweight due to limited traffic inspection | May demand more processing depending on inspection depth |
| Remote Access | Can protect devices configured to use the filtering service | Coverage depends on how the solution is deployed to remote users |
On another note, remember that DNS and web filtering can easily be deployed together, and should be with any modern business network. However, not every filtering service out there is a one-size-fits-all. Like any aspect of network security infrastructure, researching your options is always crucial.
Let’s Wrap This Up
The conversation around DNS filtering vs web filtering focuses on different points within the network. If you take anything with you, I want you to remember that DNS filtering aims at domain-level protection, and web filtering gives more detailed control over general web activity.
On a more technical level, IT teams should also think about policy flexibility, remote coverage, admin, and reporting. If you need an extra hand in finding the right enterprise web filtering services, that’s what our team at Firewalls.com is always here for.
Frequently Asked Questions
Is DNS Filtering Enough for a Business Network?
DNS filtering provides useful domain-level protection, but it isn’t the end-all, be-all solution for web-based risks. Companies need more detailed inspection than this alone.
Does DNS Filtering Affect Internet Performance?
It actually adds limited processing to the mix, as it evaluates DNS requests, rather than inspecting complete web traffic. Note that real-world performance can vary depending on things like the provider and network configuration, to name a few.
Can Web Filtering Block Specific Websites?
Yes, web content filtering solutions can generally use custom allowlists and blocklists alongside category-based policies.
Can DNS Filtering and Web Filtering Work Together?
Most definitely, and this is actually the advised approach with all of this.
Which Businesses Should Consider Enterprise Web Filtering?
This can be quite useful for companies that need detailed control over employee internet access, user groups, online apps, and general web activity across the network.
