The National Security Agency, or NSA, is now everywhere. We mentioned in a previous post that it has been present in Windows since Windows 95 OSR2. Today, it's Linux's turn. So everyone who uses Linux should know that the security service already exists with an active role in the kernel of their operating system, under the name SELinux (Security-Enhanced Linux).
According to official website , “SELinux is an implementation of mandatory access controls (MAC) on Linux.”
Mandatory access controls allow a system administrator to determine which applications and which users can access different resources, such as files, devices, networks, and communications.”
Essentially, it is a tool that allows the integration of access control security policies and works similarly to a firewall.
The NSA (National Security Agency) is the main developer of SELinux (although others such as Red Hat are also involved). This project was merged with the Linux kernel and has been there since 2003.
Needless to say, the SELinux service even exists on Android.
