Paper about Linux in use for security procedures!

Write 2.5 double spaces pages about Linux in use for security procedures include:

1- Introduction

2- How Linux can be used to stop attackers.

(hardening security tips for Linux, how to use Linux to secure servers).

** I found this helpful links that might help to use in the paper:

You don't have to use all of the contents, use the things you think are important.

https://bobcares.com/blog/how-to-secure-linux-server-from-hackers/

http://www.tecmint.com/linux-server-hardening-security-tips/

Also, prepare 2-3 slides summary of the whole thing on the paper so I can present them in class.

The due is Friday 21/April/2017 at 1.00 PM afternoon, in the central time zone Dallas, USA.