What is whitelist meaning?

Whitelist meaning refer to a list of entities that have been granted permission or given access to a specific system, network, or other resources. It is a security measure that is used to restrict access to only approved entities, while preventing unauthorized access. A whitelist is often used to protect against malicious attacks, spam, and other unwanted communications or actions. It is opposite of the blacklist, which is a list of entities that are not permitted to access the system, network, or resources. Whitelists are commonly used in email filtering, website and application access, and other security measures to limit access only to authorized entities.