Red Hat Enterprise SELinux Policy Administration (RHS429)

Skills covered:
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This course provides material for:
Red Hat Exam code: EX429
Certificate: Red Hat Certified Security Specialist RHCSS

Overview

This class culminates in a major project to analyze, determine the security needs of, and design and implement a set of net-new policies for a service previously unprotected by SELinux.

Objectives

A Red Hat Certified Engineer (RHCE®) who successfully completes this course is prepared to take the Red Hat Enterprise SELinux Policy Administration Expertise Exam (EX429), sold separately. Course content summary
• Introduction to SELinux
• Using SELinux
• The Red Hat-targeted policy
• Introduction to policies
• Policy utilities
• User and role security
• Anatomy of a policy
• Manipulating policies

Audience

Senior System Administrators, Security Administrators, and Application Programmers.

Syllabus

Introduction to SELinux

  • Discretionary access control vs. mandatory access control SELinux history and architecture overview Elements of the SELinux security model: user identity and role; domain and type; sensitivity and categories; security context SELinux policy and Red Hat's targeted policy Configuring policy with Booleans Archiving Setting and displaying extended attributes

Using SELinux

  • Controlling SELinux File contexts Relabeling files and file systems Mount options

The Red Hat targeted policy

  • Identifying and toggling protected services
    • Apache security contexts and configuration Booleans
    • Name service contexts and configuration Booleans NIS client contexts Other services File context for special directory trees Troubleshooting and avc denial messages SE troubleshooting and logging

Introduction to policies

  • Policy overview and organization Compiling and loading the monolithic policy and policy modules Policy type enforcement module syntax Object classes Domain transition

Policy utilities

  • Tools available for manipulating and analyzing policies: apol, seaudit and seaudit_report, checkpolicy, sepcut, sesearch, sestatus, audit2allow and audit2why, sealert, avcstat, seinfo, semanage and semodule, man pages

User and role security

  • Role-based access control Multicategory security Defining a security administrator Multilevel security The strict policy User identification and declaration Role identification and declaration Roles in use in transitions Role dominance

Anatomy of a policy

  • Policy macros Type attributes and aliases Type transitions When and how files get labeled restorecond Customizable types

Manipulating policies

  • Installing and compiling policies The policy language Access vector SELinux logs Security Identifiers - SIDs File-system labeling behavior Context on network objects Creating and using new Booleans Manipulating policy by example Macros Enableaudit

Project

  • Best practices Creating file contexts, types, and typealiases Editing and creating network contexts Editing and creating domains

Training provider

Teaching mode:
Online - Self paced
Classroom - Instructor Led
Duration: 4 days
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Top skills covered in this course

Apache HTTP Server
United States
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