Security Features in Linux Operating Systems

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I am writing about security features in Linux operating systems. The first security feature I researched was SELinux and who founded the SELinux. The second security feature I researched was IP tables and who founded the feature. The chroot jail security feature is another one I researched. These security features are some of the few that helps make the Linux operating system secure from malicious attacks. SELinux is designed to protect the sever from misconfigurations and compromised daemons. SELinux puts limits and instructs server daemons and programs what file they can access and what actions they can perform by defining a security policy. The U.S National security agency is the organization behind the creation of SELinux. The NSA is responsible for the research and the development of the SELinux feature. The second security feature I researched was IPtables this program that comes with Linux distributions allows administrators to configure the operating system so that it allows applications and clients to connect through the network and stop unwanted applications and clients from communicating or corrupting the operating system. One step the IPtables helps secure the operating system is making sure applications are restricted from connecting to the internet and system on the internet is restricted to connecting to the user network. So the iptables act as a firewall and enables or disable connections. The founder of IPtables /net filter is a guy named Paul Russell, he and other contributor helped formed the Netfilter core team. In the Linux operating system the chroot jail is a common expression used to describe a section of a file system that is sectioned off for certain user. Without the chroot jail, a user with limited file permission would be able to navigate top-level directories. So basically the chroot jail keeps unwanted users from making changes to

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