Why customers are switching
Cisco ranked number 1 DNS by customers
Customers ranked Cisco as the top solution for protecting against data breaches and unauthorized access in the May 2025 DNS Security Buyer's Guide.
Your SSE on-ramp
DNS Defense includes DNS-layer security plus cloud DLP and malware protection. If you need a complete SSE, including ZTNA, upgrade to full Cisco Secure Access.
See more. Stop more. While accelerating your network.
Cisco processes over 800 billion Domain Name System (DNS) requests daily with global visibility that enables industry-leading DNS intelligence.
Block ransomware, phishing, and more
DNS Defense's AI-based detections thwart malware, command and control (C2) callbacks, and DNS tunneling before connections are made to your network and endpoints.
Lower-latency architecture
Cisco features SSE with a recursive DNS service and AnyCast routing. More than 50 global DNS Points of Presence (PoPs) and over a thousand ISP partners help accelerate connections.
More than DNS
Experience more than just industry-leading DNS protection. We unify cloud DLP, malware defense, and an intelligent web proxy into one platform for deep, reliable inspection of risky sites.
Protect users on and off your network
Provide protection, both on and off your corporate network, for Windows, Mac OS X, Android, iOS, and Chromebook devices.
DNS security 101
Why security at the DNS-layer is foundational
A strong DNS-layer security, like a robust patching program, is a leading cost-effective way to improve your security posture.
Data sheet
Prevent attacks with enhanced DNS-layer security capabilities
Deploy a solution with a range of defenses to thwart the most common type of attacks—those that begin with a link or web page.
Cisco SSE packages guide
Your road to full SSE
Start with DNS, or include ZTNA, digital experience monitoring (DEM), remote browser isolation (RBI), and full DLP and SWG for full SSE.
Add value to security solutions
Cisco Security Enterprise Agreement
Instant savings
Experience security software buying flexibility with one easy-to-manage agreement.
Services for security
Let the experts secure your business
Get more from your investments and enable constant vigilance to protect your organization.