Basic Security Administration
CompTIA Linux+ Domain:
Domain 3.0: Security
CompTIA Linux+ Objective:
Objective 3.1: Given a scenario, apply or acquire the appropriate user and/or group permissions and ownership
Objective 3.2: Given a scenario, configure and implement appropriate access and authentication methods
Overview
This lab provides guidance on performing Lab 12: Basic Security Administration of the Linux+. By performing this lab, students will learn how to perform tasks related to maintaining system security.
OUTCOMES:
In this lab, you will learn to:
- Find files with special permissions
- Modify passwords and password aging
- Discover open ports
- Establish limits on user logins, processes, and memory usage
- Configure and use sudo
Key terms and descriptions
special file permissions
At the host level, you need to harden the workstations and servers. Hardening is a process that system administrator uses to lower the risk of the system from hacking. There are two types of files that have special permissions: suid and sgid. The suid (set owner user id) command is a special permission for scripts and applications.
sudo
One tool in Linux that you need to manage and keep security in mind is the sudo command. You can use this utility at the Linux terminal to execute commands as other users such as the root user.
open ports
When you install Linux, there are services run that need to be hardened You need to limit open ports to protect you machine from hackers.