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Enterprise Linux Security Administration (LN4990)

This five-day, highly technical course focuses on properly securing machines running the Linux operating systems. A broad range of general security techniques such as packet filtering, password policies, and file integrity checking are covered. Advanced security technologies such as Kerberos and SELinux are taught. Special attention is given to securing commonly deployed network services. At the end of the course, students have an excellent understanding of the potential security vulnerabilities - know how to audit existing machines, and how to securely deploy new network services.

A preferential rate (-15%) applies to the regular cost for non-profit organizations, as well as the government sector. In addition, you can benefit from additional advantages through a corporate agreement when you need to train several people or teams in your company. Contact us for details.

Public class

Duration: 
5 days / 35 hours

Private class

On site / Virtual classroom
Minimum no. of participants: 4
5 days / 35 hours
Price on request
English or Serbian
Training plan: 

1. Security Concepts

  • Basic Security Principles
  • RHEL6 Default Install
  • RHEL6 Firewall
  • SLES11 Default Install
  • SLES11 Firewall
  • SLES11: File Security
  • Minimization - Discovery
  • Service Discovery
  • Hardening
  • Security Concepts

2. Scanning, Probing, and Mapping Vulnerabilities

  • The Security Environment
  • Stealth Reconnaissance
  • The WHOIS database
  • Interrogating DNS
  • Discovering Hosts
  • Discovering Reachable Services
  • Reconnaissance with SNMP
  • Discovery of RPC Services
  • Enumerating NFS Shares
  • Nessus Insecurity Scanner
  • Configuring OpenVAS

3. Password Security and PAM

  • UNIX Passwords
  • Password Aging
  • Auditing Passwords
  • PAM Overview
  • PAM Module Types
  • PAM Order of Processing
  • PAM Control Statements
  • PAM Modules
  • pam_unix
  • pam_cracklib.so
  • pam_pwcheck.so
  • pam_env.so
  • pam_xauth.so
  • pam_tally2.so
  • pam_wheel.so
  • pam_limits.so
  • pam_nologin.so
  • pam_deny.so
  • pam_warn.so
  • pam_securetty.so
  • pam_time.so
  • pam_access.so
  • pam_listfile.so
  • pam_lastlog.so
  • pam_console.so

4. Secure Network Time Protocol (NTP)

  • The Importance of Time
  • Hardware and System Clock
  • Time Measurements
  • NTP Terms and Definitions
  • Synchronization Methods
  • NTP Evolution
  • Time Server Hierarchy
  • Operational Modes
  • NTP Clients
  • Configuring NTP Clients
  • Configuring NTP Servers
  • Securing NTP
  • NTP Packet Integrity
  • Useful NTP Commands

5. Kerberos Concepts and Components

  • Common Security Problems
  • Account Proliferation
  • The Kerberos Solution
  • Kerberos History
  • Kerberos Implementations
  • Kerberos Concepts
  • Kerberos Principals
  • Kerberos Safeguards
  • Kerberos Components
  • Authentication Process
  • Identification Types
  • Logging In
  • Gaining Privileges
  • Using Privileges
  • Kerberos Components and the KDC
  • Kerberized Services Review
  • Kerberized Clients
  • KDC Server Daemons
  • Configuration Files
  • Utilities Overview

6. Implementing Kerberos

  • Plan Topology and Implementation
  • Kerberos 5 Client Software
  • Kerberos 5 Server Software
  • Synchronize Clocks
  • Create Master KDC
  • Configuring the Master KDC
  • KDC Logging
  • Kerberos Realm Defaults
  • Specifying [realms]
  • Specifying [domain_realm]
  • Allow Administrative Access
  • Create KDC Databases
  • Create Administrators
  • Install Keys for Services
  • Start Services
  • Add Host Principals
  • Add Common Service Principals
  • Configure Slave KDCs
  • Create Principals for Slaves
  • Define Slaves as KDCs
  • Copy Configuration to Slaves
  • Install Principals on Slaves
  • Create Stash on Slaves
  • Start Slave Daemons
  • Client Configuration
  • Install krb5.conf on Clients
  • Client PAM Configuration
  • Install Client Host Keys

7. Administering and using Kerberos

  • Administrative Tasks
  • Key Tables
  • Managing Keytabs
  • Managing Principals
  • Viewing Principals
  • Adding, Deleting, and Modifying Principals
  • Principal Policy
  • Overall Goals for Users
  • Signing In to Kerberos
  • Ticket types
  • Viewing Tickets
  • Removing Tickets
  • Passwords
  • Changing Passwords
  • Giving Others Access
  • Using Kerberized Services
  • Kerberized FTP
  • Enabling Kerberized Services
  • OpenSSH and Kerberos

8. Securing the Filesystem

  • Filesystem Mount Options
  • NFS Properties
  • NFS Export Option
  • NFSv4 and GSSAPI Auth
  • Implementing NFSv4
  • Implementing Kerberos with NFS
  • GPG - GNU Privacy Guard
  • File Encryption with OpenSSL
  • File Encryption with encfs
  • Linux Unified Key Setup (LUKS)

9. AIDE

  • Host Intrusion Detection Systems
  • Introduction to AIDE
  • AIDE Installation
  • AIDE Policies
  • AIDE Usage Chapter Section

10. Accountability with Kernel Audit

  • Accountability and Auditing
  • Simple Session Auditing
  • Simple Process Accounting & Command History
  • Kernel-Level Auditing
  • Configuring the Audit Daemon
  • Controlling Kernel Audit System
  • Creating Audit Rules
  • Searching Audit Logs
  • Generating Audit Log Reports
  • Audit Log Analysis

11. SELinux

  • DAC vs. MAC
  • Shortcomings of Traditional Unix Security
  • AppArmor
  • SELinux Goals
  • SELinux Evolution
  • SELinux Modes
  • Gathering Information
  • SELinux Virtual Filesystem
  • SELinux Contexts
  • Managing Contexts
  • The SELinux Policy
  • Choosing an SELinux Policy
  • Policy Layout
  • Tuning and Adapting Policy
  • Booleans
  • Permissive Domains
  • Managing File Contexts
  • Managing Port Contexts
  • SELinux Policy Tools
  • Examining Policy
  • SELinux Troubleshooting

12. Securing Apache

  • Apache Overview
  • httpd.conf - Server Settings
  • Configuring CGI
  • Turning Off Unneeded Modules
  • Delegating Administration
  • Apache Access Controls (mod_access)
  • HTTP User Authentication
  • Standard Auth Modules
  • HTTP Digest Authentication
  • Authentication via SQL
  • Authentication via LDAP
  • Authentication via Kerberos
  • Scrubbing HTTP Headers
  • Metering HTTP Band

13. Securing PostgreSQL

  • PostgreSQL Overview
  • PostgreSQL Default Config
  • Configuring SSL
  • Client Authentication Basics
  • Advanced Authentication
  • Ident-based Authentication
Exclusives: 
  • One year access to the class recording
  • Access to the lab environment during the training
  • Course material accessible in electronic format
  • Certificate of attendance
Prerequisites: 

Experienced systems administrators with current Linux or UNIX systems.

Contact us for more information on pricing::

Eccentrix
Office: 1-888-718-9732
E-mail: info@eccentrix.ca

130, King Street West, Suite 1800
Toronto, Ontario M5X 1E3
www.eccentrix.ca