SELinux System Administration - Second Edition by Sven Vermeulen

Key FeaturesLeverage SELinux to improve the secure state of your Linux systemA clear approach to adopting SELinux within your organization Essential skills and techniques to help further your system administration careerBook DescriptionDo you have the crucial job of protecting your private and company systems from malicious attacks and undefined application behavior? Are you looking to secure your Linux systems with improved access controls? Look no further, intrepid administrator! This book will show you how to enhance your systems secure state across Linux distributions, helping you keep application vulnerabilities at bay.This book covers the core SELinux concepts and shows you how to leverage SELinux to improve the protection measures of a Linux system. You will learn the SELinux fundamentals and all of SELinuxs configuration handles including conditional policies, constraints, policy types, and audit capabilities. These topics are paired with genuine examples of situations and issues you may come across as an administrator. In addition, you will learn how to further harden the virtualization offering of both libvirt (sVirt) and Docker through SELinux.By the end of the book you will know how SELinux works and how you can tune it to meet your needs.What you will learnAnalyze SELinux events and selectively enable or disable SELinux enforcementManage Linux users and associate them with the right role and permission setSecure network communications through SELinux access controlsTune the full service flexibility by dynamically assigning resource labelsHandle SELinux access patterns enforced through the systemQuery the SELinux policy in depthAbout the AuthorSven Vermeulen is a long-term contributor to various free software projects and the author of various online guides and resources. He got his first taste of free software in 1997 and never looked back. In 2003, he joined the ranks of the Gentoo Linux project as a documentation developer and has since worked in several roles, including Gentoo Foundation trustee, council member, project lead for various documentation initiatives, and (his current role) project lead for Gentoo Hardened SELinux integration and the system integrity project.During this time, Sven gained expertise in several technologies, ranging from OS-level knowledge to application servers. He used his interest in security to guide his projects further in the areas of security guides using SCAP languages, mandatory access controls through SELinux, authentication with PAM, (application) firewalling, and more.Within SELinux, Sven contributed several policies to the Reference Policy project, and he is an active participant in policy development and user space development projects.In his daily job, Sven is an IT architect in a European financial institution as well as a self-employed solution engineer and consultant. The secure implementation of infrastructures (and the surrounding architectural integration) is, of course, an important part of this. Prior to this, he graduated with an MSc in computer engineering from Ghent University and MSc in ICT enterprise architecture from http://inno.com/, and he worked as a web application infrastructure engineer.Sven is the main author of the Gentoo Handbook, which covers the installation and configuration of Gentoo Linux on several architectures. He also authored the Linux Sea online publication, which is a basic introduction to Linux for novice system administrators, and SELinux System Administration and SELinux Cookbook for Packt Publishing.Table of ContentsFundamental SELinux ConceptsUnderstanding SELinux Decisions and LoggingManaging User LoginsProcess Domains and File-Level Access ControlsControlling Network CommunicationssVirt and Docker SupportD-Bus and systemdWorking with SELinux PoliciesAnalyzing Policy BehaviorSELinux Use Cases