Learning Articles

Oct 22, 2025

Daniel Cid (@dcid)

DNS filtering blocks malicious and unwanted sites at the resolver level before they reach your users. A practical guide to network security.

Jul 30, 2025

Daniel Cid (@dcid)

Enforce SafeSearch on Google, YouTube restricted mode, and Bing strict search across your entire network with a single DNS filtering configuration.

May 28, 2025

Daniel Cid (@dcid)

DNS logging and monitoring enable threat detection, performance tuning, and GDPR/HIPAA compliance. Complete setup guide with analysis best practices.

Apr 16, 2025

Daniel Cid (@dcid)

Anycast offers DDoS resilience and lower latency; Unicast gives you routing control. Compare both DNS deployment models to pick the right architecture.

Apr 10, 2025

Daniel Cid (@dcid)

Anycast and Unicast DNS differ in speed, scalability, and DDoS resilience. Compare both architectures to choose the right DNS routing.

Mar 28, 2025

Daniel Cid (@dcid)

Slow DNS adds latency to every page load. Optimize performance with caching, prefetching, and Anycast routing to cut DNS lookup times significantly.

Mar 10, 2025

Daniel Cid (@dcid)

Category-based filtering groups websites into categories like adult, malware, and social media for precise access control. See how it works.

Mar 03, 2025

Daniel Cid (@dcid)

False positives, slow lookups, and bypass attempts are the top DNS filtering problems. This guide walks through each issue with proven solutions.

Feb 05, 2025

Daniel Cid (@dcid)

Essential MSP checklist for deploying DNS filtering across multiple client networks. Covers multi-tenant setup, compliance, monitoring, and maintenance.

Jan 29, 2025

Daniel Cid (@dcid)

CIPA compliant DNS filtering for public libraries. Protect patrons, meet E-rate requirements, and block harmful content while preserving privacy.

Jan 08, 2025

Daniel Cid (@dcid)

Business internet filter powered by DNS security stops phishing, botnets, and data leaks before they reach your network. 5 proven protection strategies.

Nov 28, 2024

Daniel Cid (@dcid)

Should you outsource DNS resolution? Weigh the benefits of third-party DNS infrastructure against vendor lock-in, latency, and security risks.

Nov 07, 2024

Daniel Cid (@dcid)

Encrypted Client Hello (ECH) hides SNI data, breaking inline content filters. See how ECH impacts DNS-based filtering and strategies to adapt your network.

Mar 18, 2024

Daniel Cid (@dcid)

PornHub has blocked access in Texas, Montana, North Carolina, and other states rather than comply with age verification laws. The trend is accelerating.

Jan 22, 2024

Daniel Cid (@dcid)

DNS filtering vs web filtering: compare content filtering methods including browser-based, application-based, and network-level filters side by side.

Dec 01, 2023

Daniel Cid (@dcid)

Protective DNS adds a critical security layer, blocking malware and phishing at the resolver level. A complete guide to DNS security defense.

Feb 16, 2023

Daniel Cid (@dcid)

Content filtering helps parents block harmful websites, prevent cyberbullying, and manage screen time. 6 proven ways to keep kids safe.

Oct 26, 2022

Daniel Cid (@dcid)

Chrome ignores macOS Ventura's native encrypted DNS profiles, breaking DoH and DoT for managed devices. Here is the workaround for IT administrators.

Oct 12, 2022

Daniel Cid (@dcid)

DNS attacks like poisoning, hijacking, and tunneling threaten every network. See how each attack works and proven strategies to stop them.

Sep 06, 2022

Daniel Cid (@dcid)

A DNS firewall blocks malware, phishing, and C2 threats at the network level. See how RPZ feeds and DNS security defend every network.

Aug 29, 2022

Daniel Cid (@dcid)

No filter catches everything. Internet filters work best as one layer of a holistic safety strategy that includes education, communication, and monitoring.

Aug 11, 2022

Daniel Cid (@dcid)

Linux gives parents full control over software installs, user permissions, and DNS settings. Set up a locked-down, kid-safe computer in under an hour.

Aug 04, 2022

Daniel Cid (@dcid)

Applications, devices, and routers each set DNS independently. Understanding this priority hierarchy is essential for effective content filter deployment.

Jul 19, 2022

Daniel Cid (@dcid)

Smishing is SMS phishing that tricks you with fake Amazon transaction alerts. See real examples and how DNS filtering blocks these text message scams.

May 16, 2022

Daniel Cid (@dcid)

Content filtering comes in 4 types: network, browser, application, and service-based. Compare each to find the right web filtering method.

May 09, 2022

Daniel Cid (@dcid)

DNS encryption protects your queries from eavesdropping and tampering. Compare DNSSEC, DNS-over-HTTPS, DNS-over-TLS, and DNSCrypt protocols side by side.

May 02, 2022

Daniel Cid (@dcid)

Network administrators rely on DNS-based content filtering to block threats, enforce compliance, and boost productivity. Here are 6 essential strategies.

Apr 18, 2022

Daniel Cid (@dcid)

From router-level DNS filtering to device rules and age-appropriate settings, these 10 steps help parents build a safer internet experience at home.

Apr 11, 2022

Daniel Cid (@dcid)

DNS-based content filtering is platform agnostic, easy to deploy, and works at the network edge. Here are 5 key benefits for families and organizations.

Dec 14, 2021

Daniel Cid (@dcid)

Early exposure to online pornography affects children's mental health and behavior. This evidence-based guide helps parents respond effectively.

Nov 15, 2021

Daniel Cid (@dcid)

IPv6 can silently bypass your DNS content filters if left unconfigured. Close this security gap by updating your IPv6 DNS settings and firewall rules.

Nov 08, 2021

Daniel Cid (@dcid)

Blocking ad and tracking domains with DNS filtering can break site functionality. Here is what goes wrong and how to whitelist the right domains.

Sep 07, 2021

Daniel Cid (@dcid)

VPNs bypass DNS content filtering by tunneling traffic past your network controls. Proven strategies to block VPN usage and maintain filtering policies.

Aug 19, 2021

Daniel Cid (@dcid)

VPN and proxy browser extensions let users bypass content filters in seconds. Restrict extension installs on managed devices to close this security gap.

Aug 17, 2021

Daniel Cid (@dcid)

DNS-over-HTTPS encrypts DNS queries for privacy but can bypass parental controls. Understand how encrypted DNS works and what it means for your family.

Aug 11, 2021

Daniel Cid (@dcid)

DNS-over-HTTPS and DNS-over-TLS let browsers bypass your content filters silently. Here is how it works and the steps you can take to block this loophole.

Jun 23, 2021

Daniel Cid (@dcid)

Reports Harmful Content (RHC) data shows online pornography is the second most reported category of harmful internet content, behind only scams and fraud.

Mar 21, 2021

Daniel Cid (@dcid)

Apple for Kids gives parents a central hub to set up Family Sharing, Screen Time limits, and content restrictions across all their children's devices.

Mar 05, 2021

Daniel Cid (@dcid)

Utah's H.B. 72 requires default content filtering on every mobile device sold in the state. Here is what the law mandates and how it affects consumers.

Oct 05, 2020

Daniel Cid (@dcid)

Browser hijacking redirects your searches and homepage without consent. A DNS firewall blocks hijack domains before they load, stopping the attack early.

Mar 06, 2020

Daniel Cid (@dcid)

VPNs, alternate DNS, and browser extensions are the 3 methods kids use to get around porn filters. Here is how to detect and block each one effectively.

Feb 07, 2020

Daniel Cid (@dcid)

Compare Cisco Umbrella pricing and features with CleanBrowsing. Get the same DNS filtering protection at a fraction of the cost with easier deployment.

May 06, 2019

Daniel Cid (@dcid)

From the UK's Online Safety Act to US state-level age verification bills, governments worldwide are passing laws to restrict access to online pornography.

Apr 06, 2019

Daniel Cid (@dcid)

Over 50% of children encounter online porn before age 13. Explore the documented effects on kids and the practical steps parents can take right now.

Nov 17, 2018

Daniel Cid (@dcid)

Behavioral changes, secrecy, and mood shifts can signal pornography exposure. Spot these 9 warning signs early and take action to protect your child.

Sep 25, 2018

Daniel Cid (@dcid)

K-12 schools and universities face targeted phishing attacks impersonating administrators. See real examples and how DNS protection stops these threats.

Oct 07, 2017

Daniel Cid (@dcid)

Kiddle, Google SafeSearch, and DNS-enforced filtering each protect different age groups. Compare the best safe image search options for your children.