Linux Administration Part 2
This two day course provides a follow-up to Linux System Administration (Part 1)
, for those who wish to network their Linux
systems. The course covers the essential elements of configuring the
network connection including routing, and installing major services
such as NFS, NIS and DNS, plus other services. The SAMBA PC file and
printer sharing software will also be briefly examined, as will the
Apache webserver; working installations of both systems will be
created. The course uses the Redhat and CentOS Linux ES distributions.
Experience of Linux systems admin similar to the level described in the
Linux System Administration (Part 1) course
To teach experienced Linux administrators, or those who have attended the
Linux System Administration (Part 1)
configure and connect Linux systems to a network and make
use of network services.
Instructor-led course, with many practical computer-based exercises.
Concepts and limitations. Physical network components. Current
Ethernet technology, including Fast Ethernet, Gigabit, Wireless,
etc. IP network concepts and addressing.
Connecting a Linux system to the network.
Where network configuration information is stored. Using the GUI tools
to configure a network interface. Testing network
connections. Formulating IP addresses. Obtaining your own IP network
address. Using private addresses as per RFC 1918. Subnetting and
CIDR. Logical addressing. Creating logical interfaces on the same
NIC. NIC bonding for failover and loadspreading. Using commands such
as ssh to login to other systems and run remote
commands. Understanding and setting up network security, including
basic Firewall. Enabling and disabling network services with
xinetd. Configuring TCP Wrappers for controlled access and
logging. Monitoring network activity using a variety of system
Using Linux systems as routers. How to set up a route to another
network and a default route. Configuring various routing scenarios,
including backbone configurations. Enabling packet forwarding in the
Network File System (NFS) services
What is NFS, and what are its benefits? Enabling and using the NFS
services as both server and client. Mounting and exporting file system
resources. Format of /etc/exports entries. Mounting resources from the
NFS server. Updating the /etc/fstab file. Introduction to
automounting. NFS security issues.
Using utilities to monitor and troubleshoot networks. (ifconfig,
ethtool, ip, netstat, wireshark, arp and tcpdump).
Introduction to Name Services. What is available. Name Service
configuration. The /etc/nsswitch.conf name service switch.
Network Information Service.
Setting up a Linux system as a NIS server and client. Master server
setup preparation. Running ypinit. Enabling Master Server NIS
services.Updating and propagating updates. Adding clients. Adding
slave servers. Using the Netgroup facility. Utilities such as ypcat
and ypwhich. The NIS Makefile. Changing Makefile entries. NIS
compatibility issues with NIS on other systems such as Solaris.
Domain Name System (DNS) aka BIND.
Setting up DNS server services on Linux from scratch. The named daemon
and the named.conf file. Domains and Zones of authority. Resource
record format. Adding secondary (slave) servers. Maintaining DNS data
files. Setting up DNS clients. Resolving at a higher level. Adding
reverse mapping. Implementing named Logging Using rndc and enabling
rndc access security. Forwarding and Cache-only servers DNS and IPv6.
The SAMBA PC File and printer sharing protocol. What is SAMBA? How to
obtain it for other platforms. Basic setup. SAMBA facilities,
including file and printer sharing from PCs. Configuration file
setup. Using client facilities (smbclient) from the Linux
machine. Enabling the swat GUI to perform graphical SAMBA
Apache Web server
Web server installation using the apache web server. Setting up a web
site. Invoking a browser and accessing the site. Major apache
Hardware and Software Requirements
A machine running Linux for each student. Red Hat version is preferable.
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