CIS206_1.3_Importance_of_Hardening_Corey_Adams

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ECPI University, Greensboro *

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Jan 9, 2024

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CIS 206 – 1.3 - IMPORTANCE OF HARDENING Corey Adams, Bradley Jeffords, Tyler Guinard Greensboro Campus 1. What is hardening? Hardening of an OS such as Linux is about configuring the OS to make it more secure by updating it, creating rules and policies that would help to govern a system involving Linux authentication (Kerberos tickets and certs), and removing unnecessary applications and services. 2. Why is hardening important after installing a Linux OS? Hardening is important because it helps to improve the security level of a system. This helps to prevent hacks and other issues. A few things that hardening can achieve are:  Install only necessary software; delete or disable everything else  Keep all system and application software up to date, at least with security patches, but preferably with all package-by-package updates  Delete or disable unnecessary user accounts  Do not leave any executable file needlessly set to run with superuser privileges  Configure logging and check logs regularly  Understand and use the security features supported by your operating system and applications, especially when they add redundancy to your security fabric

CIS 206 – 1.3 - IMPORTANCE OF HARDENING 3. What are the similarities and differences of hardening Fedora vs Ubuntu? I will start by saying that Ubuntu is the most popular Linux distro out, and Fedora (Red Hat) is the fourth. Ubuntu is Debian based, while Fedora as I mentioned is taken from Red Hat or just changed its name at one point. Both release new distros every 6 months, but the difference is in their long-term support models. Ubuntu support for 18 months after a distro release. Fedora only offers support for 13 months after distro release. Both distros are free Both use a GNOME default user interface Both use a GPL (General Practical License)  Ubuntu: Disk encryption Minimal storage space to install File manager Nautilus (Both Fedora and Ubuntu) OS Installer – Ubiquity Software updates - Less frequent, older versions requires strong passwords Drivers Support - official support

CIS 206 – 1.3 - IMPORTANCE OF HARDENING  Fedora: Software Updates- Frequent, newer versions Drivers Support - Unofficial support OS Installer – Anaconda Disk encryption 4. If you do not do any hardening, what impact will this have on your system? Simple answer is YES. Reason because the default configuration is not set to the highest security level. If you do not harden your system, your system will be running at an elevated level of security risk and that is not good for the business at all. References Fedora vs. Ubuntu . (2022). Retrieved from Diffen: https://www.diffen.com/difference/Fedora_vs_Ubuntu OS Hardening: 10 Best Practices . (2022). Retrieved from Hysolate: https://www.hysolate.com/learn/os-isolation/os-hardening-10-best-practices/ #:~:text=Operating%20system%20(OS)%20hardening%2C,of%20protecting %20sensitive%20computing%20systems.

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