1 00:00:07,140 --> 00:00:08,730 - Welcome to module two. 2 00:00:08,730 --> 00:00:12,240 This module is about security and contains three lessons. 3 00:00:12,240 --> 00:00:13,073 In the first, 4 00:00:13,073 --> 00:00:15,420 you'll learn to work with local security settings. 5 00:00:15,420 --> 00:00:17,460 Next, you'll learn about Linux firewalls. 6 00:00:17,460 --> 00:00:19,380 And in the last lesson in this module, 7 00:00:19,380 --> 00:00:22,410 I'll explain how to apply mandatory access control 8 00:00:22,410 --> 00:00:24,483 using either Apparmor or SELinux.