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Red Hat Enterprise Linux Systems Administration (Networking and Security Operations)
Linux Training Overview

This course will teach the commands and methods needed to setup and manage advanced networking, security, and performance management on a RHEL5 system. The course will also use a problem solving approach in the lab exercises to teach system administrators advanced topics, for long-term mangement of the system.

This course is the equivalent to Red Hat course 253.

Systems: Red Hat Enterprise Linux Version 5 (all update levels)

Linux Training Prerequisites

It is assumed that the participant has successfully completed the Red Hat Linux Essentials (RH 033) and RHEL5 Systems Administration Essentials (RH 131) courses, or has equivalent system time as a user and a working systems administrator.

Linux Training Course duration

This course normally requires three (3) days, approximately 60% lecture, and 40% lab time.

Linux Training Course Objectives

On completion of this course, a systems administrator should be able to install, update, and boot the RHEL5 operating system; setup a RHEL5 system to act as a: DNS server (and client), VSFTPD server, Apache web server, email server, SAMBA host. Topics covering basic encryption, performance management tools, and usage of PAM will also be covered.

Linux Training Course outline

Advanced RHEL5 Networking Features
  • automated network attributes setup
  • network address types
  • network information files
  • controlling telnet services
  • controlling trusted host services
  • TCP Wrappers
  • syslog (and remote logging)
  • logwatch
Domain Name System (DNS) Server / Client Setup
  • reasons for DNS
  • DNS layout and overview
  • FQDN (fully qualified domain (host) name)
  • DNS server types
  • name resolution
  • primary name server setup
  • secondary and caching-only name server setup
  • testing a primary name server
  • resolver host setup
  • controlling named (via rndc)
RHEL Server Setups

SAMBA
  • SAMBA overview
  • basic SAMBA server installation
  • accessing SAMBA server shared files
  • SAMBA shared printer setup and access
sendmail
  • mail components
  • sendmail daemon
  • changing sendmail configuration files
  • replacing sendmail with postfix
web server
  • Apache Web Server packages
  • configuration files
  • logging files
  • executable scripts
ftp
  • ftp servers overview
  • gssftp
  • vsftpd
NFS
  • NFS server setup
  • NFS client
  • automounter
DHCP
  • DHCP client setup
  • DHCP server setup
RHEL5 Security

Unix types
  • Administrator responsibilities
  • Basic security considerations
  • Types of security and attacks
  • Reacting to a security problem
  • special file attributes (SUID, SGID, STICKY)
  • Access Control Lists (ACLs)
  • Default Access Control Lists (ACLs)
  • PAM (Pluggable Authentication Modules)
  • IPTABLES (firewall)
  • IPSEC
  • Data encryption in RHELL5 (files and filesystems
  • SSH
  • Using SSH tunnels for secure graphical connections
Performance Management in RHEL5
  • overview of performance monitoring tools
  • obtaining and interpreting memory management data
  • obtaining and interpreting I/O subsystem data
  • obtaining and interpreting CPU data
  • obtaining information on sockets and network adapters



 
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