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Advanced IBM AIX Systems Administration
(Network management/setup, security issues, performance)
AIX Training Overview

This course will teach the commands and methods needed to setup and manage advanced features in an AIX / Unix system. The course will also use a problem solving approach in the lab exercises to teach system managers the proper application of advanced features.

Systems: IBM AIX versions 5.1, 5.2, 5.3 on any supported hardware platform

Systems: IBM AIX, running on RS/6000 or Power4 configurations.

AIX Training Prerequisites

It is assumed that the participant has successfully completed the Fundamentals of AIX, and the IBM AIX Systems Administration course or equivalent system time as a user.

AIX Training Course duration

This course normally requires five (5) days, approximately 50% lecture, and 50% lab time.

AIX Training Course Objectives

On completion of this course, a systems administrator should be able to implement security features for the system and it's users; enable communications via modems; define name service capabilities; and use advanced options and setups for the shell command interpreters

AIX Training Course outline

Networking Management

Review of System Concepts for Systems Administrators

    Process concepts
    Shell command usage and review

Advanced Network Features

    Review of network basic setup
    Subnet addressing
    Using arp (address resolution protocol)
    Network statistics
    Controlling the inetd process
    Miscellaneous network commands/tools

File Transfer Capabilities

    The ftp utility
        setup
        file capabilities
        additional features
        Using trivial ftp (tftp)

Network File System (NFS) Features

    Review of basic NFS setup
    Advanced capabilities of server setup
    Advanced capabilities in client setup
    Setting up the automounter

Name Services

    Capabilities of DNS
    BIND configurations
    Configuring the resolver
    Configuring the named process
    Cache initialization
    Using nslookup to obtain information

Miscellaneous network capabilities

    Setting up network printer(s) (queues)
    Backups across a network

Security Issues

Advanced Security Concepts for System Administrators

    Overview of issues related to AIX / Unix security
    System administrator functions related to security

System Security Features Updating

    Security levels in an AIX / Unix system

Managing of System Users

    Using the root account securely
    Password issues
    changing
    encryption
    aging and expirations
    shadow files
    Groups
    File System Security
    File permissions review
    Special permissions: SUID,SGID,Sticky Bits
    Device files
    Using chown and chgrp
    Backups

Using Unix Log Files

    Users
    lastlog
    utmp
    wtmp
    acct
    syslog
    System
    sulog/messages

Network Security

    Proper maintenance of the /etc/hosts file
    Using the "r" commands
    The restricted shell
    NFS security implications
    TFTP issues

Performance Management

Performance Basics

    Factors affecting system performance
    Performance metrics
    Virtual system caching
    Effects of Computer Architecture
    Memory Management
    Memory usage by the kernel
    Process creation
    Buffer Cache (and allocation control)
    Shared Memory / Page Caching
    Paging and Swapping
    Monitoring Tools

CPU Management

    Software priorities concepts
    Impact of the nice parameter
    Priority boosting
    Monitoring tools

I/O Management

    Breakdown of disk I/O
    Measuring Disk and terminal I/O
    File system structure concepts
    File system caching
    Name Lookup Caching
    Tuning the Paged Buffer Cache Size
    Monitoring tools

Network Management

    TCP/IP Layers
    Socket controls
    Controlling network services
    Setting network buffer values
    Monitoring tools

NFS Performance

    RPC Performance Considerations
    Impact of NFS Blocking and Caching Sizes
    Optimizing NFS Servers and Clients
    Monitoring tools

X-window basics and implementation

    Client-server communications
    Optimizing a system with X
    Reducing xterm memory usage
    Monitoring tools

Modification of Performance Parameters

    Summaries
        Memory management
        CPU management
        I/O management
        Network management
        User program management



 
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