Cisco Umbrella works at the (and can also proxy traffic). When you try to visit a blocked site, Umbrella returns a different IP address — usually a block page — instead of the real site’s IP.
Whether you are an IT administrator or a frustrated end-user, encountering a usually means a domain has been flagged as a security threat or falls under a restricted content category. cisco umbrella unblock
To successfully "unblock" a site in Cisco Umbrella, follow this workflow: Cisco Umbrella works at the (and can also proxy traffic)
If a site is being blocked because it is "misclassified" (e.g., a legitimate business site flagged as "Gambling"), you should dispute the classification rather than just whitelisting it. cisco umbrella unblock
To unblock these without disabling security entirely: