Selinux

SELinux is a well-known security framework on Linux systems like Red Hat Enterprise Linux. Let’s have a look at the basics of this framework, such as its purpose and features. History SELinux was developed by the National Security Agency (NSA) and integrated into many Linux distributions, including Red Hat Enterprise Linux (RHEL) and CentOS. Purpose SELinux is a MAC framework that enforces fine-grained access controls. SELinux achieves this by labeling files, processes, and network ports with security contexts.

Linux security frameworks restrict unauthorized access by defining a policy and a set of predefined rules. In this article we look their purpose and how they work. Purpose of security frameworks Linux security frameworks aim to enforce mandatory access controls (MAC). This is a way of saying to restrict the actions that processes and users can perform on the system. Unlike discretionary access controls (DAC), which rely on the discretion of users and processes, MAC frameworks enforce policies defined by the system administrator.