IP Whitelisting
Noun · Security & Infosec
Definitions
A control that allows access only from approved IP addresses or ranges while denying others by default. IP whitelisting can be effective for administrative systems and APIs, but it is brittle when users move between networks or when trusted IPs are shared or compromised.
In plain English: Only allowing access from approved IP addresses.
Example: "The admin panel stayed off the public internet by requiring IP whitelisting for the office and VPN ranges."