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Red Hat Enterprise SELinux Policy Administration

4 Day Course
Hands On
Official Linux Curriculum
Code RHS429

Book Now - 1 Delivery Method Available:

Scheduled Virtual Onsite

Overview

RHS429 introduces advanced system administrators, security administrators, and applications programmers to SELinux policy writing. Participants in this course will learn how SELinux works; how to manage SELinux; and how to write an SELinux policy. This class culiminates in a major project to scope out and then write policies for previously unprotected services.

View detailed Course Modules

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Modules

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Introduction to SELinux (8 topics)

  • 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
  • Hands-on Lab: Understanding SELinux

Using SELinux (5 topics)

  • Controlling SELinux
  • File Contexts
  • Relabeling Files and Filesystems
  • Mount options
  • Hand-on Lab: Working with SELinux

The Red Hat Targeted Policy (9 topics)

  • 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
  • setroubleshootd and Logging
  • Hands-on Lab: Understanding and Troubleshooting the Red Hat Targeted Policy

Introduction to Policies (6 topics)

  • Policy Overview and Organization
  • Compiling and Loading the Monolithic Policy and Policy Modules
  • Policy Type Enforcement Module Syntax
  • Object Classes
  • Domain Transition
  • Hands-on Lab: Understanding policies

Policy Utilities (2 topics)

  • Tools available for manipulating and analyzing policies
  • Hands-on Lab: Exploring Utilities

User and Role Security (10 topics)

  • Role-based Access Control
  • Multi Category Security
  • Defining a Security Administrator
  • Multi-Level Security
  • The strict Policy
  • User Identification and Declaration
  • Role Identification and Declaration
  • Roles in Use in Transitions
  • Role Dominance
  • Hands-on Lab: Implementing User and Role Based Policy Restrictions

Anatomy of a Policy (7 topics)

  • Policy Macros
  • Type Attributes and Aliases
  • Type Transitions
  • When and How do Files Get Labeled
  • restorecond
  • Customizable Types
  • Hands-on Lab: Building Policies

Manipulating Policies (12 topics)

  • Installing and Compiling Policies
  • The Policy Language
  • Access Vector
  • SELinux logs
  • Security Identifiers - SIDs
  • Filesystem Labeling Behavior
  • Context on Network Objects
  • Creating and Using New Booleans
  • Manipulating Policy by Example
  • Macros
  • Enableaudit
  • Hands-on Lab: Compiling Policies

Project (5 topics)

  • Best practices
  • Create File Contexts, Types and Typealiases
  • Edit and Create Network Contexts
  • Edit and Create Domains
  • Hands-on Lab: Editing and Writing Policy

Prerequisites

RHS429 requires RHCE-level skills. Prerequisite skills can be shown by passing the RHCE Exam in either RH302 or RH300, or by taking RH253 or by possessing comparable skills and knowledge.

Additional Learning

The courses below may help you meet the knowledge level required to take this course. If you are unsure please ask a training advisor .

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