In SELinux, what term is used to describe the labels on processes, files, and ports that determine access?

The term used in SELinux to describe the labels on processes, files, and ports that determine access is context. In SELinux, each object, such as a file, process, or network port, is assigned a security context, which consists of several elements that specify the security attributes of that object. This context is crucial because SELinux uses it to make access control decisions based on the defined policies.

Context includes information such as the user, role, type, and level, which together define what actions are permissible for each object. When SELinux checks whether a process can access a file, it compares the security contexts of both to determine if the access should be allowed or denied based on the current security policy in place.

The other options, while related to the functioning of SELinux, do not accurately describe the labels. Policy refers to the rules set forth that govern access decisions but does not represent the labels themselves. Labeling could be seen as the action of assigning labels, and permissions refer to the rights granted to users or processes, which are influenced by those labels but do not specifically denote them.