CompTIA Linux+ XK0-004 Cert Guide

Chapter 13. Account Security

This chapter covers the following topics:

• Pluggable authentication modules (PAMs)

• Secure Shell (SSH)

• TTYs and PTYs

• TCP wrappers

• Public key infrastructure (PKI)

• VPN as a client

This chapter covers the following objective:

• Objective 3.2: Given a scenario, configure and implement appropriate access and authentication methods.

One of the most important tasks that all Linux administrators face is securing each of the systems in a network. Security breaches can occur both locally and remotely, so you need to know how to protect systems from multiple threats.

In this chapter you learn the basic concepts of securing network services, securing data using encryption techniques, and securing local user accounts.

“Do I ...