What does server lockdown prevent?

Server lockdown is a security feature designed specifically to enhance the integrity of a server's operating environment by preventing unauthorized applications from running. This means that it restricts the execution of software that has not been explicitly allowed, which is crucial in protecting against potential threats or malware that could compromise the server's functionality or data. By enforcing strict control over which applications can run, server lockdown ensures that only verified and trusted software is executed, thereby significantly reducing the risk of unauthorized access and potential data breaches.

In contrast, the other options do not accurately describe the primary function of server lockdown. While it may indirectly affect incoming traffic or communication aspects by stopping unauthorized applications that could exploit such connections, its main focus is safeguarding the server's operating environment from unapproved applications.