Cisco | Umbrella Blocking Websites

Navigate to . Ensure the domain isn't caught by a generic category you have blocked (e.g., "Social Networking" or "Newly Seen Domains"). If the category block is intentional, you need an exception.

Thought leadership, explaining how it works. cisco umbrella blocking websites

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If the site is safe but falls into a blocked category: Navigate to

When a user attempts to visit a website, their computer sends a DNS query to resolve the domain name (e.g., example.com ) into an IP address. Cisco Umbrella acts as the secure DNS resolver for these requests. Thought leadership, explaining how it works

Are you blocking a site that uses HTTPS? Umbrella generally cannot inspect the content of HTTPS traffic unless you are using the . If you see a generic block page rather than a detailed category block page, it might be an SSL handshake issue. Ensure your root CA certificate is installed on the client machine so Umbrella can present the block page correctly.