Chapter 21. Security (Topic 1.14)

As with any multiuser-networked operating system, a secure environment is essential to system stability. This Topic covers basic Linux security administration. The following three Objectives are included:

Objective 1: Perform Security Administration Tasks

This Objective includes the configuration of TCP wrappers (a facility that monitors inbound network connections), management of SUID and SGID properties, corrupted package files, management of user passwords, and the use of the secure shell (ssh). Weight: 4.

Objective 2: Set Up Host Security

This Objective examines how to implement shadowed passwords, eliminate unnecessary network services, configure syslogd, and examine web sites with security information. Weight: 4.

Objective 3: Set Up User-Level Security

This Objective covers the creation for user limits on logins, processes, and memory usage. Weight: 2.