Web filtering is a cybersecurity technique that allows organizations to control and manage access to websites and online content.
Deploying web filtering can address the growing threats posed by malicious websites and the need to maintain productivity.
Web filtering is employed by a wide range of users, including businesses, educational institutions, and individuals to create safer, more controlled internet usage environments. It enhances security by blocking harmful sites, and it enforces content access policies to improve productivity and protect against legal liabilities.
The 8 Top Web Filtering Tools
Here's our roundup of the best web filtering solutions:
- Control D
- WebTitan
- Cisco Umbrella
- Cloudflare Gateway
- DNSFilter
- SafeDNS
- NextDNS
- DefensX
Each offers a unique approach to protect networks, block harmful websites, and keep users safe online.
1. Control D (Best All-Round Solution)
Control D is a versatile DNS-based web filtering service that allows organizations to control access to websites and online services by blocking specific categories or domains. It’s highly customizable and is especially useful for businesses that seek fine-tuned control over their web traffic.
The Methodology of Control D
Control D operates as a DNS filtering and traffic redirection service that gives users advanced control over their internet browsing experience. It does this by manipulating DNS queries. Here's how it works:
DNS Resolution
This tool converts domain names (like "example.com") into IP addresses so browsers can load websites. However, it goes beyond basic DNS because it allows users to customize the responses they receive for specific queries.
Customizable Filtering
Users can set rules to block or allow specific websites or entire categories of content. Control D has a catalog of over 950 predefined services, which makes it easy to manage access to popular websites and online services.
Traffic Redirection
This tool diverts DNS queries through proxies in over 100 global locations, bypassing geographic restrictions or masking their location without needing a VPN. It replaces DNS query responses with the IP addresses of proxy servers.
Geo-Blocking and Geo-Unblocking
These are location-based rules that block or redirect traffic based on the requestor’s location or the location of the requested site. They enforce regional compliance or enable access to geo-restricted content.
Security and Privacy
This tool integrates threat intelligence to automatically block known malicious domains and prevent malware, phishing, or other online threats. Secure protocols include DNS-over-HTTPS (DoH) and DNS-over-TLS (DoT).
Advanced Customization
Users can create detailed filtering rules. For instance, they can block specific domains, redirect certain websites to IPs of their choosing, or even allow certain sites but limit access to specific subdomains or services within them.
Logging and Monitoring
Query logging offers detailed reports on traffic patterns. They monitor employee web usage, enforce policies, or detect potential security risks.
In summary, Control D works by giving users full control over DNS traffic. This allows for content filtering, traffic redirection, geo-based controls, and real-time threat protection—all through a user-friendly platform designed for flexibility.
Control D Features
Here’s an overview of its key features:
Malware and Threat Protection
Threat intelligence from multiple sources blocks malicious domains and IP addresses automatically. Machine learning detects and blocks malware.
Service and Content Blocking
More than 1000 predefined services can be blocked or unblocked; it offers granular control over which sites or services are accessible.
Geo-Based Rules
These are rules based on geographic locations. It can block or redirect requests based on the country of origin or destination.
Modern DNS Protocols
DNS-over-HTTPS (DoH), DNS-over-TLS (DoT), and DNS-over-QUIC ensure encrypted and secure DNS queries.
Traffic Redirection
This redirects DNS traffic through proxies in 69 countries without the need for a VPN.
Extensive Logging and Analytics
This feature logs DNS queries and stores them for review, offering both real-time monitoring and historical data retention.
Cross-Platform Support
Control D offers setup applications for Windows, Mac, iOS, Android, and various routers to ensure wide compatibility.
Full API Access and Admin Logs
An API allows service integration into custom software; administrative actions can be tracked through detailed logs.
This feature set makes Control D particularly suited for businesses and power users looking for robust, customizable DNS filtering and traffic control solutions.
Summary
Pros:
- Easy setup with customizable blocklists
- Includes privacy features such as IP masking
- Flexible configuration across multiple devices
Cons:
- Fewer enterprise-level features compared to competitors
In 2024, Control D is ideal for businesses looking for flexible web filtering solutions that allow detailed control over online access. It's a strong option for those needing easy-to-use, customizable filtering without extensive cybersecurity requirements.
2. WebTitan
WebTitan is a cloud-based web filtering solution designed for businesses, schools, and ISPs to block access to harmful content, ensure security, and manage internet usage.
It provides advanced URL filtering, malware protection, and real-time monitoring to help organizations safeguard their networks against threats like phishing, ransomware, and inappropriate content.
However, there are a few features in Control D’s arsenal that WebTitan does not yet offer, such as:
- Compatibility with Linux, Android, and iOS systems
- 1,000 blockable Services
- Geo-custom rules
- Traffic Redirection
Pros:
- Advanced malware detection and phishing protection
- Detailed reporting and analytics
Cons:
- Can be complex to configure for smaller businesses
- No free plan or trial beyond a limited demo
3. Cisco Umbrella
Cisco Umbrella is a cloud-delivered web filtering and security platform that protects users against malware, phishing, and other online threats. It uses DNS-layer security to block malicious traffic before it reaches your network.
Cisco Umbrella is best suited for large enterprises and organizations that need robust, enterprise-grade web filtering solutions combined with threat intelligence. It's a premium product geared toward businesses with high-security demands.
Pros:
- Comprehensive threat intelligence and security features
- Integration with Cisco's broader security ecosystem
- Cloud-based for easy deployment across multiple locations
Cons:
- Expensive for smaller businesses
- Steep learning curve for non-technical users
4. Cloudflare Gateway
Cloudflare Gateway is a secure web filtering and DNS-based security solution that protects organizations from malware, phishing, and other online threats. It also offers real-time threat intelligence and policy enforcement, ensuring a safe and compliant browsing experience for users.
Much like Cisco Umbrella, the service is geared towards large enterprises with sizeable IT departments and organizations that are already embedded into the Cloudflare ecosystem. This also means that it comes with a hefty price tag, and while the service is comprehensive, it isn’t the most user-friendly – particularly for non-technical users.
Pros:
- Real-time traffic monitoring and URL filtering
- Integrated DDoS protection
- Fast performance due to Cloudflare’s global server network
Cons:
- Fewer advanced features for complex environments
- Must be integrated into Cloudflare’s wider security packages for full functionality
- Expensive for smaller businesses
5. DNSFilter
DNSFilter is a cloud-based security solution that protects organizations from online threats like malware, phishing, and botnets. With AI-driven threat intelligence and easy deployment, it provides granular control over internet usage.
Unfortunately, features such as SIEM integration and the ability to export your data require the purchase of an add-on, which can significantly increase your monthly spending.
Pros:
- Real-time AI-driven threat detection
- Easy to deploy and manage via a user-friendly interface
- Phishing and malware protection
Cons:
- Limited advanced features
- Fewer features than Control D
👉 Read our head-to-head comparison of Control D vs DNSFilter
6. SafeDNS
SafeDNS is a cloud-based web filtering solution that provides businesses, schools, and households with advanced content filtering and online threat protection. It uses DNS-layer technology to block access to inappropriate or dangerous websites, including malware, phishing, and spyware.
It is ideal for organizations seeking efficient content filtering and enhanced security for both on-premises and remote users. But, it should be noted that while SafeDNS offers a solid set of features, it does not offer Geo-custom rules, Traffic Redirection, or support for all modern DNS protocols, which can limit its scalability.
Pros:
- Easy to use with customizable filters
- Suitable for both business and personal use
- Provides reliable DNS-level protection
Cons:
- Limited advanced features to competitors
- Does not support all modern DNS protocols
- Blockable Services only offered to higher-priced plans
7. NextDNS
NextDNS is a cloud-based web filtering and security solution that offers customizable content filtering, blocking of malicious domains, and privacy protection by preventing third-party tracking. It also works across all devices and platforms and offers detailed analytics.
It’s major drawback is in its breadth of features. NextDNS lacks the advanced functionality seen in services like Control D. It also lacks detailed documentation, which can be a barrier to entry for non-technical users.
Pros:
- Strong focus on privacy and tracker blocking
- Highly customizable and easy to configure
- Works on a wide range of devices, including mobile
Cons:
- Lacks advanced filtering features
- Can be overwhelming for novice users due to its depth of customization
- Does not offer geo-based blocking features
- Limited documentation for non-technical users
👉 Read our blog on the NextDNS vs Control D
8. DefensX
DefensX is a cloud-based web filtering and cybersecurity solution that protects users from online threats such as malware, phishing, and malicious websites. It provides real-time threat detection, customizable filtering policies, and detailed analytics, making it a comprehensive solution for organizations seeking strong web protection and management across all devices.
There are limitations, though. DefensX is only available to MSPs, and it lacks the depth of customization necessary for complex use cases. This means it may not scale well with an organization that needs more tailored policies and rules.
Pros:
- Effective real-time malware and phishing protection
- Cloud-based with an intuitive interface
- Protects against web-based and email threats
Cons:
- Lacks the depth of customization some organizations may need
- No offline protection
- Only available to MSPs
How Does Web Filtering Work?
Web filtering restricts access to specific URLs, websites, or categories of content based on predefined rules, often to prevent exposure to harmful or inappropriate material. Most web filtering services are hosted in the cloud and act as barriers to access to undesirable sites. They examine traffic and optionally block some of it.
Here’s a breakdown of how web filtering functions:
URL Filtering
This method blocks access to specific websites by filtering out URLs that match a list of disallowed sites. This is commonly used in workplaces or schools to manage productivity and ensure compliance with acceptable use policies.
Content Filtering
Instead of blocking entire URLs, content filtering software examines a webpage's actual content and blocks access if the content is deemed inappropriate. This restricts access to specific types of information, such as violence, hate speech, or pornography.
DNS Filtering
Web filtering can also be DNS-based, where domain names are blocked at the DNS resolution stage. This is a quick and scalable way to prevent users from visiting malicious or unwanted sites. When a user tries to visit a restricted website, the DNS server either blocks the request or redirects it to a different webpage.
How Individuals use web filtering
Individuals use web filtering to control and secure their personal browsing environments. This can be particularly beneficial in households with children or for individuals concerned about privacy, productivity, and safety. Here's how and why individuals use web filtering:
Parental Controls
Parents often implement web filters software to restrict access to inappropriate or harmful content and ensure safe browsing for their children. Content filtering software offers customizable options to block entire categories of content based on the child’s age.
Ad Blocking and Privacy
Individuals use web filters to block intrusive ads and prevent tracking by third-party cookies or malicious websites. This enhances privacy and reduces exposure to harmful or misleading ads that may contain malware.
Productivity Management
Some individuals use web filtering to block distracting sites like social media or streaming platforms to enhance personal productivity. This is especially useful for students or remote workers who want to limit distractions during study or work hours.
Security
Web filtering helps protect personal devices from accessing malicious sites that could infect them with viruses, malware, or ransomware. DNS-based filtering can block phishing sites that attempt to steal personal information like credit card details or login credentials.
Why web filtering is important for businesses
Web filtering is crucial for businesses because it enhances security, productivity, and regulatory compliance. Here are the main reasons web filtering is vital for business environments:
Network Security
One of the primary functions of enterprise web filtering software is to prevent access to malicious websites that could introduce threats like malware, ransomware, or phishing attacks. Many cyberattacks originate from unsuspecting employees clicking on harmful links. Web filters block these threats before they reach the network.
Improves Productivity
Web filtering software reduces time-wasting activities by blocking access to distracting websites like social media, gaming platforms, or streaming services during work hours. This ensures that employees remain focused on their tasks, which improves overall productivity.
Compliance and Policy Enforcement
In industries with strict regulatory requirements, like finance or healthcare, web filtering ensures compliance with regulations such as HIPAA or GDPR. Because it controls what employees can access, it prevents the sharing of sensitive information on unsecured sites. This helps businesses avoid costly fines and legal liabilities.
Bandwidth Management
Businesses with limited bandwidth may use web filters to block bandwidth-heavy sites (e.g., video streaming or large downloads) to ensure optimal network performance for mission-critical tasks. This helps avoid sluggish internet performance, which can impact productivity.
Data Loss Prevention (DLP)
Web filtering can help prevent data breaches by restricting access to unsecured or inappropriate sites where employees may inadvertently upload or expose confidential information. By filtering outbound web traffic, businesses can reduce the risk of sensitive data being leaked or shared on unauthorized platforms.
In conclusion, web filtering software for business is essential to ensure secure, productive, and compliant work environments. Individuals benefit because it enhances personal privacy, security, and focused browsing.
Final Thoughts
The best web filtering software depends on your business's size and specific security needs. Tools like Control D, SafeDNS, and NextDNS offer businesses easy-to-manage web content filtering solutions without the complexity of enterprise systems. For larger enterprises, platforms like WebTitan, Cisco Umbrella, and Cloudflare Gateway provide advanced security features and detailed reporting.
No matter the size or industry, a reliable website filtering system helps ensure productivity, compliance, and security across all devices and networks. Each of these solutions offers a unique approach, so businesses can select the most appropriate tool to meet their needs.
