DNS filtering blocks access to harmful, inappropriate, or unauthorized websites.
Key Points
1. Prevents access to malicious domains.
2. Enforces content policies (e.g., gambling, adult content, social media).
3. Uses threat intelligence to categorize and filter sites.
4. Faster and lighter than proxy-based filtering.
5. Includes logging, block lists, and integration with security tools.
6. Common providers include Cisco Umbrella and Cloudflare.