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 web filtering for 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 architectures differ in speed, scalability, and DDoS resilience. A complete comparison to choose the right DNS routing for your network.

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 DNS access control. See how filter categories work.

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 to your network, blocking malware and phishing at the resolver level. A complete guide to DNS security defense.

Feb 16, 2023

Daniel Cid (@dcid)

Content filtering gives parents powerful tools to block harmful websites, prevent cyberbullying, and manage screen time. Here are 6 proven ways it keeps 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 with DNS security.

Sep 06, 2022

Daniel Cid (@dcid)

A DNS firewall uses protective DNS to block 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-based, browser-based, application-based, 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, relationships, 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.