Linux is an alternative operating system for computers. And years one of the best known examples of free software and open source. It can be freely modified, used and redistributed by anyone.
In the interest of the system, the security of aos most important files are available separately. Linux can be used by multiple users. This would make your computer more vulnerable, but doesn, AOT. No user has root access AOT, aos applications so that we can change accidentally AOT. Aot Viruses can access the system configuration, because configuration files are located in a directory / etc and all this gives the stability of Linux.
Security-Enhanced Linux (SELinux) is a service of greater security. We can define a unique configuration that anyone who has access to applications and servers and network procedures. This makes our network more secure.
SELinux implements security policies using the Linux security modules. LSM is a framework that allows the Linux kernel that supports security models. It has lots of features, such interfaces are well defined, the policy is very flexible and support for policy change. The controls on the system files, directories, files, messages and network interfaces are very strong.
SELinux was made available to users a simple package with the version of Red Hat Enterprise Linux 4 and all future versions as well. Not only can be installed with Red Hat, Fedora, but hardened Gentoo and Yellow Dog as well.
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