DNS-based filtering blocks malicious or policy-violating domains at lookup time. Here is how it works, what it is great at, where it falls short in 2026, and how it compares to URL filtering and on-device SSL inspection.

Web filter solutions in 2026 split across DNS-layer, cloud-proxy SWG, on-device SWG, browser-based, and vertical (K-12) filters. Here is how each works, what it filters, and how to choose.

DNS is the address book of the internet and a foundational layer of cyber security. DNS filtering blocks malicious domains at lookup time. In 2026, with 95% of web traffic encrypted, DNS-layer alone is no longer enough. Here is the full explainer.

Cisco Umbrella reviewed in 2026: where it is genuinely strong, where the architecture is showing its age, and which buyers should consider an on-device alternative. By a direct competitor.

When Cisco Umbrella goes down, your DNS resolution and SWG inspection break with it. Here is why cloud-proxy outages happen, how often, and what an architecture that does not depend on a remote PoP looks like.

Cisco Umbrella vs Zscaler is a DNS-first vs cloud-proxy-first comparison. Both backhaul. Here is the side-by-side on architecture, pricing, AI governance, and where on-device SSE fits.