In computing, a white list is a list of items that a security algorithm or filter will always allow to pass through. In the case of email, whitelisting an email address (typically done by adding it to your contact list) ensures that the email is delivered to your inbox. When configuring a firewall, the list of applications that are allowed to always pass through the firewall is the white list. White lists are useful as they allow administrators and users to ensure critical information and applications remain deliverable/functional even if changes are made to the security algorithms.
- By Jason Fitzpatrick on 11/25/13