Which Cisco Umbrella SIG feature prevents users from browsing specific websites in a Cisco SD-WAN branch?

DNS filtering is a core capability of Cisco Umbrella's Secure Internet Gateway (SIG) that prevents users from accessing specific websites by blocking or redirecting DNS requests for those domains. This is effective in preventing browsing of unwanted content categories or individual sites.

Talos correlated intelligence is Cisco's threat intelligence feed that informs various security products, but it is not a direct filtering mechanism for specific websites.

A cloud-delivered firewall provides broader network security, including port/protocol filtering and intrusion prevention, but DNS filtering is a more targeted and efficient method for blocking specific websites based on their domain names.

A web gateway provides advanced web security features like URL filtering, content inspection, and malware scanning, but DNS filtering is a distinct and often more fundamental mechanism for blocking access at the DNS resolution stage.