What function do "IP Restrictions" serve in Salesforce?

The function of "IP Restrictions" in Salesforce is to limit login access to specific external IP addresses for enhanced security. This feature allows organizations to define which IP addresses are permitted to access their Salesforce environment. By setting these restrictions, businesses can ensure that only users connecting from trusted networks, such as their corporate office or a secure remote location, are able to log in. This function is crucial for protecting sensitive data and minimizing the risk of unauthorized access, as it helps to mitigate potential security threats by controlling the geographical locations from which logins can occur.

The ability to limit access is particularly significant in scenarios where organizations need to comply with various regulatory and security standards. It adds an additional layer of defense beyond standard authentication processes, requiring that users not only enter valid credentials but also connect from within a defined network perimeter.