Red Hat® System Administration III with RHCSA and RHCE Exam (RH255) is designed for experienced Linux® administrators who need networking and security administration skills. With a heavy emphasis on practical, hands-on labs, focus is placed on enhancing automation skills to securely configure, deploy, and manage network services, including DNS, Apache, SMTP, and network file sharing. In addition, this course emphasizes security, including monitoring, packet filtering, access controls, and SELinux. At the completion of this course, students already familiar with the Red Hat Certified Technician (RHCT)/Red Hat Certified System Administrator (RHCSA) administration skills will have exposure to all competencies tested by the RHCSA and Red Hat Certified Engineer (RHCE®) exams, which are included in this class.
Given a virtualized environment, begin to administrate multiple systems using prerequisite skills.
Configure system to use Kerberos to verify credentials and grant privileges via sudo.
Automate system administration tasks using Bash scripts and text-based tools.
Secure files with GnuPG.
Use yum plug-ins to manage packages; understand the design of packages; build a simple package.
Profile running services, then capture and analyze network traffic.
Configure system to route traffic and customize network parameters with sysctl.
Secure network traffic through SSH port forwarding and iptables filtering/network address translation (NAT).
Configure an NTP server.
Manage local file-system integrity; monitor systems over time and system logging.
Access centralized storage (iSCSI) and encrypt file systems.
Understand SSL certificates and deploy an SSL-encapsulated web service.
Configure a web server with virtual hosts, dynamic content, and authenticated directories.
Configure an SMTP server for basic operation (null client, receiving mail, smarthost relay).
Understand DNS resource records and configure a caching-only name server.
Configure file sharing between hosts with NFS.
Configure file and print sharing between hosts with CIFS.
Configure file sharing with anonymous FTP.
Understand the boot process and recover unbootable systems with rescue mode.