Best DNS Filtering for Small Business (2026)

// 01

WHAT DNS FILTERING IS AND WHY IT'S THE CHEAPEST SECURITY WIN.

Every time an endpoint reaches out to a domain name — opening a website, sending an email, loading a script, calling an API, fetching a software update — it makes a DNS lookup first. DNS is the “phone book” that translates the human-readable domain name (acme.com) into the IP address the network actually routes to. Every modern application makes hundreds of DNS lookups per hour per endpoint. DNS is genuinely ambient infrastructure.

DNS filtering is the security control that inspects every one of those lookups and blocks the ones going to known-malicious domains: phishing landing pages, malware distribution servers, ransomware command-and-control infrastructure, exploit kit hosting, data-exfiltration endpoints. Instead of catching the malware after it's already downloaded, DNS filtering blocks the lookup before the malicious content ever gets a chance to load. The endpoint asks “what's the IP for evil-malware-c2.com?” and the resolver answers “blocked” instead of an IP. The attack stops at the DNS layer.

The case for DNS filtering as the cheapest security win in the SMB stack is straightforward. Per-user pricing is the lowest of any modern security control — typically $1.50-7/user/month at SMB scale, often less than the per-user cost of email security or EDR. Deployment is mechanical — point endpoints at the security resolver or install a roaming agent. There's no signature tuning, no policy authoring overhead for the baseline deployment, no end-user friction. And it works at a layer that's genuinely earlier in the kill chain than endpoint protection — many attacks stop at DNS before EDR ever sees them, which means fewer endpoint alerts, fewer incidents, less alert fatigue.

By 2026, DNS filtering is on every credible SMB security stack design. Cyber insurance carriers ask about it on the underwriter questionnaire. HIPAA risk assessments expect it. Most managed-IT engagements include it by default. The question is no longer “DNS filtering or not” — it's “which DNS filtering platform.”

// 02

WHY FREE DNS RESOLVERS FAIL BUSINESS AUDITS.

Quad9 (9.9.9.9) and CleanBrowsing's free tier are legitimate threat-blocking DNS resolvers. They both apply real threat intelligence and block lookups to known-malicious domains. Compared to a generic 1.1.1.1, 8.8.8.8, or your ISP's default resolver, Quad9 and CleanBrowsing are a real security improvement at zero cost. For a sole proprietor on a single laptop with no employees and no compliance posture, they're adequate.

For a business with employees, customer data, or any regulatory exposure, free DNS resolvers fail audits for the same five reasons free antivirus does:

No central management. Business platforms have a cloud console where one administrator sees every endpoint, sets per-user or per-group policy, pushes changes, pulls reports. Free resolvers have no console.
No audit trail. Business platforms log every DNS query and every block with timestamp, source endpoint, destination domain, and category. That log is what HHS OCR, the FTC, PCI assessors, and cyber-insurance underwriters expect to see. Free resolvers may have ephemeral local logs at best.
No policy granularity. Business platforms let you set different policies for different users, groups, departments, or sites. Want the sales team to access social media but not the finance team? Want stricter filtering on guest Wi-Fi than on corporate Wi-Fi? Free resolvers offer one-size-fits-all blocking with no segmentation.
No roaming enforcement. Business platforms ship a per-endpoint roaming agent that enforces DNS policy regardless of which network the laptop is on. Free resolvers only protect when the device happens to be configured to use them at the OS/network level — a remote employee on hotel Wi-Fi may not even be using the resolver you think they are.
No business support contract. When a legitimate domain is incorrectly classified as malicious and blocks an employee's workflow at 4pm on a Friday, you want a vendor support ticket queue, not a community forum.

The cost gap between free DNS and business-tier DNS is small — typically $1.50-7 per user per month for the lower-priced platforms in this guide. The audit, insurance, and regulatory consequences of running consumer-grade DNS infrastructure on a business network are not small. The math always favors business-tier deployment.

// 03

THE 4 PLATFORMS THAT COVER THE SMB MARKET.

The DNS filtering market is dominated at the SMB tier by four platforms that cover the overwhelming majority of deployments for 5-to-100-endpoint Florida small businesses:

Cisco Umbrella: The enterprise standard, with an SMB tier (DNS Security Essentials) that brought the platform into reach for smaller businesses. Most widely deployed business DNS filter in North America; deepest threat intelligence; mature integration with the rest of the Cisco security stack.
Cloudflare Gateway / Zero Trust: The bandwidth-first option built on Cloudflare's global DNS infrastructure (the largest authoritative DNS network in the world). The Zero Trust Free tier is genuinely usable for businesses up to 50 users — an unusual differentiator in this category.
DNSFilter: The cleanest SMB-native console in the comparison. Built specifically for SMB and MSP deployment patterns; transparent per-user pricing; strong real-time threat-detection engine using AI classification.
WebTitan: The compliance-heavy MSP pick. TitanHQ's WebTitan DNS Filter is widely deployed in MSP-managed environments, regulated medical/legal/financial verticals, and education. Strong reporting, granular policy, sensible MSP-channel pricing.

Other platforms you may encounter — Akamai SIA, Palo Alto DNS Security, Forcepoint URL Filtering, Zscaler ZIA (which includes DNS layer), and the SafeDNS, SecureDNS, Untangle DNS, NextDNS Business tier products — are all legitimate platforms with their use cases. Akamai and Palo Alto specifically are enterprise-priced and enterprise-complex for an SMB; Zscaler is a complete SWG/ZTNA platform where DNS filtering is one feature among many. For the typical 5-50 person Florida SMB, the four platforms above are the practical short list.

The remainder of this guide covers each of the four in depth, then the 10 evaluation criteria, real pricing, integration trade-offs, compliance fit, and where Simply IT lands by default.

// 04

CISCO UMBRELLA: THE ENTERPRISE STANDARD.

Cisco Umbrella (originally OpenDNS, acquired by Cisco in 2015) is the most-deployed business DNS filtering platform in North America. The platform's threat intelligence — Cisco Talos — is among the deepest in the industry; the dashboard reports observed threats and DNS-layer signals that smaller vendors don't see at the same scale. The product comes in tiers from DNS Security Essentials (lightweight DNS-only) through DNS Security Advantage (adds app discovery, reporting depth) up to Secure Internet Gateway (SIG) Essentials and SIG Advantage (full SWG, CASB, cloud-delivered firewall on top of DNS).

Strengths: Best-in-class threat intelligence powered by Cisco Talos visibility across hundreds of billions of daily DNS queries. Deepest historical reporting in the comparison — Umbrella Investigate, the threat-research console, is a tier of capability standalone vendors generally can't match. Integration depth with the rest of the Cisco security stack (Cisco Secure Endpoint, Cisco Secure Email, Cisco SecureX) is meaningful for organizations standardized on Cisco. The Umbrella roaming client is mature and well-trusted on both Windows and macOS.

Weaknesses: Enterprise commercial posture, even at the SMB tier — annual commitments standard, pricing negotiations can take longer than at the lighter-weight vendors. The console can feel busy for SMB operators not used to multi-product Cisco UIs. SMB pricing at the lower tiers is competitive; SIG-tier pricing climbs quickly and is overkill for many SMBs that just need DNS-layer filtering.

Pricing: DNS Security Essentials runs roughly $2.50-4 per user per month at SMB volumes (under 100 users). DNS Security Advantage $4-7. SIG Essentials $7-12. Pricing is negotiable through Cisco partners; Simply IT can quote Umbrella through our partnership at competitive rates. For an SMB on Microsoft 365 looking for the strongest standalone DNS-layer filter with the broadest threat-intelligence backing, Umbrella is the safe default.

// 05

CLOUDFLARE GATEWAY / ZERO TRUST: THE BANDWIDTH-FIRST OPTION.

Cloudflare runs the largest authoritative DNS network in the world (the consumer 1.1.1.1 resolver is one front door; the business Cloudflare Gateway runs on the same infrastructure with security policy on top). Cloudflare Zero Trust packages DNS filtering with secure web gateway capability, ZTNA-style access controls, and CASB-lite features into a unified platform. The differentiator is performance — Cloudflare's anycast network puts DNS resolution within tens of milliseconds of nearly every endpoint on earth.

Strengths: Industry-leading DNS resolution latency. The Zero Trust Free tier is genuinely usable for businesses up to 50 users — including DNS filtering, basic SWG, and identity-aware access controls at zero cost. This is unusual and worth understanding; most “free for business” security platforms have crippling limits, but Cloudflare's free tier was designed as a real business product. The WARP roaming client is solid on Windows, macOS, iOS, Android. Strong integration with the rest of Cloudflare (DDoS protection, WAF, R2 storage, Workers) for organizations that already use Cloudflare for CDN/security.

Weaknesses: Threat intelligence and historical threat-research depth trail Cisco Talos. Cloudflare ships strong threat feeds but doesn't have the same century-long observation horizon Cisco does. The console is well-built but Cloudflare-style — more developer-oriented than the IT-administrator-oriented consoles of WebTitan or DNSFilter. Compliance certifications are extensive but the SMB-focused HIPAA/PCI/CMMC documentation is thinner than at the more SMB-native vendors.

Pricing: Cloudflare Zero Trust Free — up to 50 users, real free tier with no expiration. Zero Trust Standard $7/user/month (annual). Zero Trust Plus $10/user. For SMBs under 50 users with limited budget and reasonable comfort with the Cloudflare ecosystem, the free tier is one of the strongest cost-to-capability ratios in the SMB security stack. For larger or more compliance-heavy SMBs, the paid tiers are competitive.

// 06

DNSFILTER: THE SMB-NATIVE CONSOLE.

DNSFilter is a US-based DNS filtering vendor built explicitly for the SMB and MSP segment. The product launched after Umbrella was already established and deliberately competed on console quality, pricing transparency, and MSP-channel-friendly packaging. By 2026, DNSFilter is widely deployed across US SMB and MSP environments and frequently shortlisted against Umbrella in head-to-head SMB evaluations.

Strengths: The cleanest, most SMB-friendly management console in the comparison set. Real-time threat detection using AI-powered domain classification (DNSFilter built proprietary ML classifiers rather than relying solely on threat-feed subscriptions, which produces better detection on freshly-registered malicious domains). Transparent per-user pricing without enterprise-style sales-call negotiations. Strong MSP multi-tenant management. AppAware tier adds application-level visibility and policy enforcement (block specific cloud apps at the DNS layer). Genuinely good support quality at SMB price points.

Weaknesses: Threat-intelligence depth lags Cisco Talos for the most sophisticated nation-state-aligned threats. Brand recognition outside the SMB/MSP segment is thinner than Umbrella or Cloudflare. Some cyber-insurance underwriter questionnaires name Cisco and Cloudflare explicitly but not DNSFilter — the broker may need to confirm acceptance (this has not been a problem in our experience but worth checking before binding).

Pricing: DNSFilter Pro runs $1.50-3 per user per month at SMB volumes — the lowest paid-tier pricing in the comparison. AppAware (with app-level controls) $3-5. Pricing is transparent on the website and meaningfully better at small scales than the larger vendors' quoted SMB rates. For Florida SMBs prioritizing budget and console usability over Cisco-tier threat intelligence depth, DNSFilter is often the strongest fit.

// 07

WEBTITAN: THE COMPLIANCE-HEAVY MSP PICK.

WebTitan (from Irish security vendor TitanHQ) is the DNS filtering platform that's especially common in MSP-managed environments and regulated verticals. WebTitan DNS Filter (the lighter-weight tier) and WebTitan Cloud (the fuller-featured SWG-adjacent tier) cover the SMB through mid-market range. The platform has strong roots in education and healthcare compliance and is widely deployed across the UK, Ireland, and increasingly the US SMB market.

Strengths: Genuinely granular policy controls — per-user, per-group, per-time-of-day, per-category, per-domain — at SMB-friendly pricing. Strong category-classification engine with 60+ content categories. The reporting layer is sophisticated and audit-friendly, which is part of why WebTitan does well in regulated verticals. MSP-friendly multi-tenant management with sensible commercial terms for channel partners. WebTitan also bundles with TitanHQ's email security (SpamTitan) and email archiving (ArcTitan) for SMBs wanting a single-vendor security stack.

Weaknesses: Threat-intelligence depth trails Cisco and Cloudflare for the most novel threats. Brand recognition in the US is lower than the others, though growing. The roaming client is functional but lighter on macOS than some competitors. Some advanced features (deep app visibility, fine-grained TLS inspection) require the higher-priced WebTitan Cloud tier rather than the DNS-only tier.

Pricing: WebTitan DNS Filter for Business runs $1-2 per user per month at SMB volumes — competitive with DNSFilter at the bottom of the market. WebTitan Cloud (with advanced policy and reporting) $2-4. For compliance-heavy SMBs (medical, legal, financial, education) that want granular policy with strong audit reporting at a lower price point than Umbrella, WebTitan is often the best fit.

// 08

THE 10 EVALUATION CRITERIA FOR SMBs.

The criteria that actually predict whether a DNS filtering deployment delivers value once it's in production:

01
Threat-Intelligence Depth
How quickly does the vendor identify newly-malicious domains, and how broad is the underlying observation? Cisco Talos has the deepest historical horizon; Cloudflare has the broadest real-time DNS visibility; DNSFilter's ML classifier excels on freshly-registered domains; WebTitan ships strong commercial threat feeds.
02
Roaming Endpoint Coverage
DNS filtering only protects the endpoint when the endpoint is actually using the security resolver. Modern business platforms ship a roaming agent for Windows, macOS, iOS, Android that enforces policy regardless of network. Quality and stability of that agent matters — especially on macOS where some agents are flakier than others.
03
Policy Granularity
Per-user, per-group, per-department, per-time-of-day, per-category, per-domain controls. Some SMBs only need one global policy; some need 20. WebTitan and DNSFilter offer the cleanest granular policy at SMB price points; Umbrella has the deepest enterprise-grade policy capability but adds operational overhead.
04
Console UX and Operational Overhead
If you or your MSP will be in the console regularly, UX matters. DNSFilter and WebTitan have the SMB-friendliest consoles; Umbrella has the most depth at the cost of complexity; Cloudflare is well-built but developer-flavored.
05
Microsoft 365 Identity Integration
Per-user policy enforcement requires identity awareness. All four vendors integrate with Microsoft Entra ID (formerly Azure AD); depth and operational simplicity vary. Cloudflare Zero Trust has the cleanest identity-aware-policy story; Umbrella, DNSFilter, and WebTitan all support Entra integration but require more setup.
06
Reporting and Audit Trail Quality
Cyber insurance, HIPAA, FTC Safeguards all expect a queryable audit trail. Umbrella and WebTitan have the most sophisticated reporting; DNSFilter has the cleanest UI for routine reports; Cloudflare is technically capable but reporting depth lags.
07
Compliance Certifications and BAA Support
HIPAA BAA (all four sign one), SOC 2 (all four certified), FedRAMP (Cisco has the deepest authorization), PCI DSS scope (all four). For regulated SMBs, request the latest compliance documentation packet before signing.
08
Cyber-Insurance Carrier Recognition
All four platforms qualify on major-carrier underwriter questionnaires. Coalition specifically calls out Umbrella in some questionnaires; Travelers and Chubb accept all four with equal weight.
09
Pricing and Commercial Terms
Per-user pricing ranges $1-15/user/month across the four vendors and the tier choices. DNSFilter and WebTitan have the lowest entry pricing; Umbrella and Cloudflare have the strongest higher-tier capability. Annual commitments are standard but monthly is available.
10
Vendor Stability and Support Quality
DNS filtering is multi-year infrastructure. Cisco (Umbrella) and Cloudflare are the largest, most-financially-stable vendors. DNSFilter and TitanHQ (WebTitan) are smaller but well-established. Ask for references at your size band before signing.

The right vendor is rarely the same answer across all 10 criteria. For most Florida SMBs the practical decision collapses to: budget-priority shops choose DNSFilter or Cloudflare Free; threat-intelligence-priority shops choose Umbrella; compliance-priority shops choose WebTitan or Umbrella; Cloudflare-ecosystem shops choose Cloudflare Zero Trust.

// 09

PRICING REALITY: PER-USER PER-MONTH IN 2026.

Realistic 2026 pricing for North Central Florida SMBs in the 5-100 user range:

Cisco Umbrella DNS Security Essentials / Advantage / SIG Essentials: $2.50-4 / $4-7 / $7-12 per user per month.
Cloudflare Zero Trust Free (up to 50 users): $0 — a real free-for-business tier covering DNS filtering, basic SWG, and identity-aware access.
Cloudflare Zero Trust Standard / Plus: $7 / $10 per user per month.
DNSFilter Pro / AppAware: $1.50-3 / $3-5 per user per month.
WebTitan DNS Filter / WebTitan Cloud: $1-2 / $2-4 per user per month.

DNS filtering is the cheapest paid security control in the SMB stack — per-user pricing is meaningfully below EDR, email security, MFA, or backup. The dollar gap between free consumer DNS and business-tier DNS is the smallest gap in the entire security stack. The audit, insurance, and operational benefits of business-tier DNS filtering vastly exceed the per-user cost.

For Simply IT managed clients, DNS filtering is bundled into every tier — Simply Managed ($75/user/month), Simply Secure ($125/user), Simply Compliant ($150/user), all no-long-term-contract. The DNS layer, threat-block review, policy management, and audit reporting are included rather than separate line items. That math typically beats stacking standalone DNS licenses plus a separate management contract.

For nonprofits, all four vendors offer nonprofit pricing on inquiry — meaningful discounts available, especially through MSP partner channels. The Cloudflare Free tier covers most small nonprofit deployments at zero cost.

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INTEGRATION WITH M365, EDR, AND SIEM.

Microsoft 365 / Entra ID identity. All four vendors integrate with Microsoft Entra ID for identity-aware policy enforcement — assign per-user or per-group policies based on M365 identity rather than IP or device. Cloudflare Zero Trust has the cleanest identity integration (built around it from day one); Umbrella, DNSFilter, and WebTitan all support Entra integration but require more configuration. For SMBs heavy on M365 with mature group structures, the identity integration meaningfully simplifies policy management.

EDR / endpoint protection. DNS filtering and EDR are complementary, not redundant. DNS filtering blocks at the network layer; EDR blocks at the endpoint layer; both should run. The integration story varies: Cisco Umbrella + Cisco Secure Endpoint is tight (the Cisco SecureX platform unifies them). Cloudflare Zero Trust + Microsoft Defender for Business is loosely integrated via API. DNSFilter and WebTitan integrate with any EDR via standard SIEM and SOAR connectors but don't have first-party EDR partnerships. For most SMBs the integration depth is good-enough at all four vendors.

SIEM / log aggregation. All four vendors export DNS logs to Microsoft Sentinel, Splunk, Sumo Logic, Elastic, and most other major SIEMs via standard connectors. For SMBs with a SIEM (more common in regulated verticals), DNS logs are one of the highest-signal feeds — they show every threat block and provide forensic visibility on attempted attacks. For SMBs without a SIEM, the vendor's native reporting is typically sufficient.

Network infrastructure. DNS filtering integrates with most modern firewalls and routers via DNS-redirect or roaming-client deployment. Cisco Meraki networks have a one-click Umbrella deployment toggle. Ubiquiti UniFi networks support all four vendors via DNS forwarding. Cloud-only SMBs without on-prem network infrastructure typically deploy roaming-client-only for full coverage.

Email security overlap. DNS filtering blocks the lookup; email security blocks the message. Both should run. See our Email Security Platforms pillar for the dedicated email-side decision matrix.

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COMPLIANCE FIT: HIPAA, CMMC, INSURANCE, FTC.

HIPAA. DNS filtering supports 45 CFR 164.308(a)(1)(ii)(B) (risk-management), 164.308(a)(5)(ii)(B) (malicious software protection), and 164.308(a)(6) (security incident procedures). All four vendors sign a BAA on commercial agreements. For Florida medical practices, DNS filtering is part of the standard managed-IT engagement and is increasingly expected on HIPAA risk assessments. See our HIPAA Cybersecurity Guide for the broader medical-practice context.

CMMC (defense contractors). NIST SP 800-171 controls 3.13.1 (boundary protection), 3.13.6 (deny network traffic by default), and 3.14.6 (monitor for malicious code) all relate to DNS filtering. Umbrella has the strongest FedRAMP authorization story; Cloudflare and the others have commercial-cloud certifications but may not meet specific DoD-environment requirements. For CUI environments, validate the deployment scope with the CMMC assessor before binding. See our CMMC Compliance pillar.

Cyber insurance. All major carriers' questionnaires ask about DNS-layer filtering or network-layer threat prevention. Coalition explicitly references DNS filtering; Travelers, Chubb, and AIG ask broadly. All four vendors in this guide qualify on every major carrier's questionnaire. See our Cyber Insurance 10-Control Checklist for the full carrier-questionnaire context.

FTC Safeguards Rule. The Safeguards Rule's requirement that a financial institution “continuously monitor or undertake periodic penetration testing and vulnerability assessments” — and the broader requirement for a written information security program — both benefit from DNS-layer threat blocking with documented audit trails. See our FTC Safeguards Implementation Guide for the CPA-firm context.

Florida Bar Rule 4-1.6 (law firms). Florida attorneys' duty of reasonable competence and confidentiality includes implementing reasonable security measures. DNS filtering is now a standard part of that reasonable-security baseline. See our Florida Bar Rule 4-1.6 guide.

For all five regulatory environments above, deploying any of the four vendors covered in this guide produces a defensible posture. The choice between vendors is rarely a compliance question — it's a budget, console-preference, and integration-fit question.

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THE SIMPLY IT DNS FILTERING RECOMMENDATION.

Simply IT's default DNS filter for new managed clients is Cisco Umbrella DNS Security Essentials. The reasons stack: deepest threat intelligence (Cisco Talos), broadest cyber-insurance carrier recognition, mature roaming-client on Windows and macOS, well-understood operational characteristics across multi-year client relationships. For most Florida SMBs the per-user cost ($2.50-4 at SMB volumes) fits comfortably inside the managed-IT engagement and the capability is well-matched to the threat landscape.

We deploy Cloudflare Zero Trust (Free tier for under-50-user organizations, Standard tier for larger or more security-mature) at clients with strong budget constraints, existing Cloudflare investment, or specific identity-aware-policy requirements that suit Cloudflare's architecture. The Free tier is one of the strongest cost-to-capability ratios available anywhere in the SMB security stack.

We deploy DNSFilter at clients where console UX matters most — typically clients where in-house staff (not just our team) will be in the console regularly and where the operational simplicity matters more than the marginal threat-intelligence depth. DNSFilter also wins on per-user cost for the smallest SMBs.

We deploy WebTitan at compliance-heavy SMBs (medical, legal, financial, education) that want granular reporting and policy with budget-friendly pricing. WebTitan's reporting layer is particularly strong for audit-driven environments.

We do not deploy free consumer DNS resolvers (Quad9, CleanBrowsing, ISP defaults) at any managed client. The audit, insurance, and management-layer gaps make them unsuitable for business environments. The dollar cost of business-tier DNS filtering ($1-7/user/month at the lower tiers) is genuinely small relative to one incident or one cyber-insurance non-renewal.

The bottom line for Florida SMBs: in 2026, DNS filtering is required infrastructure and the cheapest paid component of the security stack. The default answer for most of you is Cisco Umbrella DNS Security Essentials, with Cloudflare Zero Trust, DNSFilter, or WebTitan as secondary fits for specific situations. If you'd like a vendor-neutral written recommendation specific to your business, get a free Simply IT DNS filtering scoping call — we'll review your current network architecture, remote-worker coverage, compliance posture, and budget, and give you an honest written recommendation. No obligation, no long-term contracts.

// FAQ

FREQUENTLY ASKED QUESTIONS.

What is DNS filtering and how does it work?+

DNS filtering is a security control that inspects every DNS lookup an endpoint makes and blocks lookups to domains classified as malicious, phishing-related, command-and-control infrastructure, or otherwise inappropriate for business use. Instead of waiting for an endpoint to download malware and then catching the file, DNS filtering blocks the lookup that would have resolved the malicious domain — so the malware never gets a chance to download or call home. The mechanism: instead of pointing your endpoints at a generic resolver (8.8.8.8, 1.1.1.1) or your ISP's, you point them at a security-aware resolver (Cisco Umbrella, Cloudflare Gateway, DNSFilter, WebTitan) that maintains real-time threat intelligence on domain reputation. The filtering happens at the network layer, before any application or endpoint protection sees the traffic.

Is DNS filtering the same as a web filter?+

Related but not identical. A traditional web filter operates at the HTTP/HTTPS layer and inspects URLs, content, and (with TLS inspection) page contents. DNS filtering operates one layer earlier — at the DNS-lookup layer — and blocks the domain resolution itself. DNS filtering is faster, lighter, and works for all protocols (not just web traffic). It doesn't require certificate installation, doesn't inspect content, and doesn't introduce TLS-decryption latency. The trade-off: DNS filtering can't do page-level inspection or block-by-keyword. Most modern business-tier products (Umbrella, Cloudflare Gateway, DNSFilter, WebTitan) combine DNS filtering with an optional secure web gateway (SWG) layer for the cases where deeper inspection matters.

How much does business DNS filtering cost per user?+

Realistic 2026 SMB pricing: Cisco Umbrella DNS Security Essentials roughly $2.50-4 per user per month at SMB volumes; Umbrella DNS Advantage $4-7; full SIG Essentials $7-12. Cloudflare Zero Trust Free tier is genuinely usable up to 50 users (this is a real free-for-business offering, not a personal-use-only one); paid Zero Trust Standard $7/user/month; Zero Trust Plus $10/user. DNSFilter $1.50-3 per user per month at SMB volumes; AppAware tier and MSP packaging available. WebTitan DNS Filter for Business $1-2 per user per month, with WebTitan Cloud (advanced policies + reporting) $2-4. Section 09 has the full breakdown.

Is free DNS filtering (Quad9, CleanBrowsing) okay for business?+

Quad9 (9.9.9.9) and CleanBrowsing's free tier are legitimate threat-blocking resolvers — they do block known-malicious domains using real threat intelligence. They are a meaningful improvement over a generic 1.1.1.1 or 8.8.8.8 for a sole proprietor on a single laptop. For a business with employees, compliance obligations, or a cyber-insurance policy, free DNS resolvers fail audits for the same reason free antivirus does: no centralized management, no audit log, no policy enforcement, no business support contract, no per-user or per-site policy granularity. HIPAA risk assessors, FTC Safeguards auditors, and cyber-insurance underwriters all expect a business-tier platform with the management layer that free resolvers don't provide.

Does DNS filtering work for remote employees?+

Yes, and this is one of the strongest cases for DNS filtering in 2026. Modern business DNS filtering platforms (all four covered here) provide an endpoint-resident roaming client that enforces the same DNS policy whether the laptop is on the corporate network, the employee's home Wi-Fi, an airport hotspot, or a hotel. The roaming client tunnels DNS queries to the security resolver regardless of which network the device is on. This is meaningfully better than network-only filtering (which only protects on-prem traffic) and is the right architectural choice for any business with remote, hybrid, or travel-heavy workforces. The roaming client is typically included at the per-user license tier (sometimes called “roaming” or “agent-based” in vendor literature).

Can DNS filtering block ransomware?+

DNS filtering can block much of the ransomware kill chain even when the malware itself reaches the endpoint. Modern ransomware almost universally calls back to command-and-control infrastructure to fetch encryption keys, exfiltrate data, or coordinate the attack — and that callback is a DNS lookup that threat-intelligence-aware resolvers will block. DNS filtering also blocks initial-access phishing landing pages, malware-distribution domains, and exploit-kit infrastructure. The DBIR and Coalition incident reports consistently identify DNS-layer blocking as one of the highest-leverage low-cost controls in the kill chain. DNS filtering doesn't replace EDR or backup — it's defense in depth. Run DNS filtering as the first layer and EDR as the second; the combination dramatically reduces the probability that a ransomware incident progresses past initial access.

Does cyber insurance require DNS filtering?+

Not universally yet, but the trend is clear. The Coalition Cyber Insurance underwriter questionnaire asks specifically about DNS-layer filtering; Travelers, Chubb, and AIG ask broadly about “web filtering / DNS filtering / network-layer threat prevention.” Carriers don't typically require a specific vendor, but answering “no” to the DNS-layer-filtering question either disqualifies the application or drives premium loads. By renewal 2027, expect DNS filtering to be functionally non-negotiable on commercial cyber policies for SMBs above ~10 employees. All four vendors in this guide qualify on every major carrier's questionnaire.

Is DNS filtering HIPAA-compliant?+

DNS filtering itself isn't a HIPAA-named control — the Security Rule is technology-neutral by design. The relevant HIPAA citations are 45 CFR 164.308(a)(1)(ii)(B) (“implement security measures sufficient to reduce risks and vulnerabilities to a reasonable and appropriate level”), 164.308(a)(5)(ii)(B) (“procedures for guarding against, detecting, and reporting malicious software”), and 164.308(a)(6) (security incident procedures). DNS filtering supports all three. For the BAA side: Cisco signs a BAA covering Umbrella for HIPAA customers, Cloudflare signs a BAA covering Cloudflare Zero Trust, DNSFilter signs a BAA on enterprise agreements, WebTitan does as well on commercial agreements. All four are deployable in HIPAA environments with appropriate BAA in place.

Does DNS filtering replace EDR or antivirus?+

No. DNS filtering and EDR/antivirus solve different problems at different layers of the kill chain. DNS filtering blocks the network-layer callback (initial access, C2 communication, data exfiltration paths). EDR/antivirus blocks the endpoint-layer execution (the actual malware running on the workstation). A complete SMB security posture includes both — plus email security, MFA, patch management, and backup. DNS filtering is one of the highest-leverage components because it's cheap, fast to deploy, and stops a meaningful fraction of attacks before they reach the endpoint. See our 7-layer endpoint security pillar for the broader stack architecture.

What's the difference between DNS filtering and a secure web gateway (SWG)?+

DNS filtering operates at the DNS-lookup layer and blocks resolutions to malicious domains. A secure web gateway (SWG) operates at the HTTP/HTTPS layer and can do TLS-decryption, URL inspection, content-classification, file-download scanning, and user-level policy enforcement on web traffic specifically. SWGs are more powerful but materially more complex (TLS-cert deployment, latency overhead, end-user friction). Most SMB-tier products in this guide bundle a lightweight SWG capability with the DNS filtering — Umbrella SIG, Cloudflare Gateway, DNSFilter AppAware, WebTitan WebFilter — so for many SMBs the DNS-plus-light-SWG combo is enough. Larger or more regulated SMBs sometimes pair DNS filtering with a separate dedicated SWG (Zscaler, Netskope, Cloudflare Gateway at the higher tier).

Can I switch DNS filtering vendors mid-policy-year?+

Yes — DNS filtering is one of the easiest security controls to swap. The mechanical change is a DNS-resolver IP update (either on the network router/firewall for network-only enforcement, or via roaming-agent installation for per-endpoint enforcement). Cutover can be done in a single evening for a small office. As with any security-tool change, coordinate with the cyber-insurance broker so the new vendor is reflected on the policy attestation, and don't leave a coverage gap between the old vendor uninstall and the new vendor deployment. We schedule overlap so the new vendor is policy-active before the old vendor uninstalls.

Does Simply IT manage DNS filtering for clients?+

Yes. Every Simply IT managed client receives DNS filtering on every workstation, server, and remote endpoint as part of the standard engagement — Cisco Umbrella by default for most clients, with Cloudflare Zero Trust, DNSFilter, or WebTitan deployed where the client's specific environment, compliance posture, or budget makes one of the alternatives the better fit. Policy management, reporting, threat-block review, and integration with the rest of the security stack (EDR, email security, M365 Conditional Access, SIEM where applicable) are bundled into the managed engagement. Simply IT's managed-IT tiers run $75 per user per month (Simply Managed), $125 per user per month (Simply Secure), and $150 per user per month (Simply Compliant), no long-term contracts. DNS filtering is included in all three tiers.

BEST DNS FILTERING FOR SMALL BUSINESS — UMBRELLA vs CLOUDFLARE vs DNSFILTER vs WEBTITAN.

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