Course Description

GL275 is an expansive course that covers a wide range of network services useful to every organization. Special attention is paid to the concepts needed to implement these services securely, and to the trouble-shooting skills which will be necessary for real-world administration of these network services. Like all PARSEC Group courses, the course material is designed to provide extensive hands-on experience. Topics include: Security with SELinux and Netfilter, DNS concepts and implementation with Bind; LDAP concepts and implementation using OpenLDAP; Web services with Apache; FTP with vsftpd; caching, filtering proxies with Squid; SMB/CIFS (Windows networking) with Samba; and e-mail concepts and implementation with Postfix combined with either Dovecot or Cyrus.

Prerequisites

Students should already be comfortable with basic Linux or Unix administration. Fundamentals such as the Linux filesystem, process management, and how to edit files will not be covered in class. A good understanding of network concepts, the TCP/IP protocol suite is also assumed. These skills are taught in the GL120 "Linux Fundamentals" and GL250 "Enterprise Linux Systems Administration" courses.

Supported Distributions

• Red Hat Enterprise Linux 7
• SUSE Linux Enterprise 12

Course Outline

• Securing Services
• SELinux and LSM
• DNS Concepts
• Configuring BIND
• Creating DNS Hierarchies
• Advanced BIND DNS Features
• Using Apache
• Apache Security
• Apache Server-Side Scripting Administration
• Implementing an FTP Server
• The Squid Proxy Server
• SQL Fundamentals and MariaDB
• LDAP Concepts and Clients
• OpenLDAP Servers
• Samba Concepts and Configuration
• SMTP Theory
• Postfix
• Mail Services and Retrieval
• NIS