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RedHat Linux Administration

Course Overview


By the end of the RedHat Linux Administration workshop, participants will be able to perform installation, establish network connectivity, manage physical storage and perform basic security administration.

Course Content


Installations -Network - VNC - Kickstart

  • Discuss features of RedHat Enterprise Linux 6
  • Create HTTP installation source tree
  • Explore installation options
  • Install via HTTP - Text Mode
  • Perform VNC Install
  • Graphical installation
  • Kickstart, automated installation
  • Use Rescue Mode
  • Explore Single-User Mode
  • Discuss INIT - Upstart facilities

Explore Requisite Shell Utilities

  • 'pwd', 'touch', 'stat', 'ls', 'id'
  • 'echo', 'cat'
  • 'cp' - copy files
  • 'mv' - move files throughout the file system
  • 'tty' - Discuss terminals
  • 'tar' - explore features and advantages of tarballs
  • 'gzip', 'bzip2', 'zip' - Compress content
  • 'md5sum', 'sha1sum', 'sha256sum', 'sha512sum' - checksums
  • 'file' - discuss logic used to ascertain file type
  • 'find' - single and multiple expressions and criteria
  • Use 'w' commands
  • 'ps' - explore process lists
  • free & top - explore process management with top
  • Process lines with: 'grep'
  • Process fields with: 'awk'
  • Explore 'sed' - streams processing
  • Basics of: 'perl'
  • User and group management concepts

Permissions - Symlinks - Quotas - File System Management

  • Explain Discretionary Access Controls (DAC) file system permissions
  • Manipulate DAC permissions
  • Create Symbolic links
  • Implement file system quotas
  • Use 'parted' and 'fdisk' to manipulate partitions
  • FSTAB - explore File System Table
  • Allocate swap storage
  • Logical Volume Management (LVM) - Discuss concepts and applications
  • Allocate partitions for usage with LVM
  • Create Physical Volumes
  • Create Volume Groups based on Physical Volumes
  • Create Logical Volumes based on Volume Groups
  • Mount and use LVM Volumes
  • Resize LVM Volumes
  • Generate RAID volumes
  • Evaluate results

RPM | YUM Package Management

  • Query existing packages & file-based packages
  • Identify offline and online package repositories
  • Install packages
  • Upgrade packages
  • Remove packages
  • Create YUM repositories
  • Manage packages using YUM
  • Configure redundant YUM repositories
  • Explore Package Kit - GUI

CRON - System Scheduler

  • Explore Cron Implementation
  • Explain scheduler
  • Global and scope-based Cron options
  • Schedules jobs to run & examine the output
  • Configure individual Crontab entries
  • Explore 'at' & 'batch' usage

RSYSLOG and Logrotate

  • Discuss rsyslog facilities & levels
  • Configure TCP listener
  • Log Cisco router events to rsyslog server
  • Explore log rotation

Network Utilities

  • PING
  • Use Telnet to test TCP ports
  • Explore Netstat socket listings
  • Use arp to enumerate layer-2 neighbors
  • LFTP - basic usage, job control
  • LFTP - mirror and reverse mirror content
  • LFTP - batch, non-interactive, scripted mode
  • Explore: 'wget', 'curl' & 'ssh'

Network Interface Configuration

  • Discuss concepts
  • Identify key files & scripts
  • Explore: IPv4 & IPv6 configuration
  • Configure aliased interfaces
  • Provision additional NIC
  • Evaluate results

Very Secure File Transfer Protocol Daemon (VSFTPD)

  • Concepts & Applications
  • Explore configuration directives
  • Disable anonymous access
  • Source connections to VSFTPD

RSYNC

  • Discuss features
  • Synchronize inter-server content
  • Evaluate

Trivial File Transfer Protocol Daemon (TFTPD)

  • Concepts & Applications
  • Install and configure
  • Archive Cisco router configuration
  • Use 'tftp' client to move data
  • Discuss caveats

TELNETD

  • Concepts & Applications
  • Enable via XINETD
  • Source connections to TELNETD

NTPD

  • Explain NTP hierarchy
  • Configure time sources
  • Synchronize internal resources via NTP
  • Evaluate results

Dynamic Host Configuration Protocol (DHCPD)

  • Configure exclusive broadcast domain
  • Install and configure DHCPD
  • Implement reservations
  • Examine client configuration
  • Evaluate results

Domain Name System (DNS) - BIND

  • Configure BIND as a caching-only DNS server
  • Implement Master DNS Zones
  • Configure Master/Slave Zones with peer
  • Evaluate results of BIND configuration
  • Configure IPv4 reverse support
  • Configure IPv6 forward & reverse support
  • Resolve queries - compare & contrast client resolvers

Network File System (NFS) Implementation

  • Implement NFS Server
  • Export shares and discuss options
  • Mount NFS exports on remote Linux Host
  • Implement AutoFS

Samba Implementation

  • Implement Linux & Windows Integration via Samba
  • Use key Samba clients
  • Explore Samba Configuration files
  • Install Samba Server support
  • Configure Samba file sharing
  • Configure Samba-Active Directory Integration with Winbind
  • Evaluate results

Apache Web Server Implementation

  • Explore Apache configuration tree
  • Peruse log configuration variables
  • Configure IP-based Virtual Hosts
  • Configure Name-based Virtual Hosts
  • Implement Apache logging system per virtual host

MySQL Relational Database Management System

  • Install MySQL Relational Database Management System
  • Secure access to MySQL
  • Explore MySQL monitor shell-based interface
  • Create sample MySQL database
  • Populate with data and execute queries
  • Discuss key SQL DML Commands
  • Evaluate results

PHP

  • Discuss features and benefits
  • Install Apache | MySQL Support
  • Write data-retrieval script
  • Execute & debug
  • Evaluate results

SELinux Intro

  • Discuss Concepts & Applications
  • Explore default configuration
  • Identify key tools
  • Expose SELinux subject | object labels
  • Enable SELinux-restricted functions on key services
  • Auto-relabel the file system
  • Copy & Move data & evaluate ramifications
  • Evaluate results

NMAP - Reconnaisance and Risk Assessment Tool

  • Discuss features & benefits
  • Install via YUM
  • Identifiy key NMAP configuration files
  • Identify commonly used NMAP options/switches/parameters
  • Perform service identification
  • Perform local & remote service risk exposure scans

IPTABLES - Firewall

  • Concepts & Applications
  • Explore default tables and chains
  • Define and test INPUT chain rules
  • Define and test OUTPUT chain rules
  • Explain IPTABLES default chains/filters and policies
  • Filter traffic based on Layers 3|4
  • Test connectivity
  • Evaluate IPTables6 (IPv6) support
  • Write IPv6 rules
  • Archive | Restore firewall rules

TCPDump

  • Concepts & Applications
  • Capture broad-based traffic
  • Narrow scope with Berkeley Packet Filters (BPFs)
  • Parse captured traffic
  • Evaluate results

Apache SSL

  • Features & Benefits
  • Explore default configuration
  • Generate usage keys for virtual hosts
  • Apply usage keys to virtual hosts & test configuration
  • Use 'tcpdump' to intercept clear-text & encrypted traffic
  • Compare and contrast capture results

VSFTPD - SSLFeatures & Benefits

  • Reference SSL|TLS usage keys
  • Configure VSFTPD to support SSL|TLS exclusively
  • Evaluate connectivity with: LFTP & FileZilla
  • Liberate server configuration with hybrid approach
  • Capture FTP clear-text & encrypted traffic with: 'tcpdump'
  • Compare & contrast packet dumps
  • Evaluate results

Enhance Security Posture

  • Rationalize consequences (pros|cons) of lean presence
  • Discuss compliance benefits
  • Use 'nmap' to identify superfluous services: local & remote perspectives
  • Mitigate risk by reducing exposure
  • Loopback candidate daemons
  • Perform post-mitigation reconnaisance with'nmap'
  • Document baseline configuration
  • Evaluate Results

Customer Reviews


Thanks to Xpertised and the tutor who walked me through all the topics with Practical exposure which is helping me in my current project.
-Waseem

Course was quite helpful in terms of understanding of concepts and practicality. Its really a very friendly environment to learn. The timing were mutually chosen, as we both are working professional. I am quite satisfied with the course.
-Tanmoy

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