SSRF guard
A check that stops a server from being tricked into calling internal addresses (server-side request forgery). Before ZopNight fetches from a customer-supplied URL, it resolves the address and refuses private, loopback and link-local ranges, so the URL must be reachable on the public internet. Why it matters: Without it, a URL field could be used to probe a provider's internal network.
Read the term in context.
Each row is a lesson that uses this term. The lesson where it first appears is the canonical definition.