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ENTERPRISE LINUX NETWORK SERVICES
Linux Training Overview

Students interested in developing skills as network administrators find this course invaluable. Topics explored and implemented in the class include the setup and maintenance of many of the most popular network services available for Linux and Unix today, including servers for DNS, SMB (Windows networking), e-mail servers, FTP, web, and caching proxy. Special attention is paid to the concepts needed to implement these services securely, and to the trouble-shooting skills which will be necessary for real-world administration of network services.

Individuals wishing to take this class should already have a solid grounding in UNIX concepts and basic systems administration. Fundamentals such as an understanding of the Linux filesystem, process management, and the ability to manipulate and edit files is considered a must and will not be covered in class. A good understanding of network concepts, and the TCP/IP protocol suite is also assumed.

Courseware supports latest versions of Red Hat Enterprise Linux, Fedora Core, SUSE LINUX Professional, and SUSE LINUX Enterprise Server


Linux Training Course duration

40 Hours

Linux Training Course outline

Section 1 DNS Concepts

  • Naming Services
  • The Domain Name Space
  • Delegation and Zones
  • Server Roles
  • Resolving Names and Resolving IP Addresses
  • BIND Administration
  • rndc key configuration
  • Configuring the Resolver and Testing Resolution
      Lab1 - Configure BIND
  • Install the BIND name server on the system and configure it to act as a slave for the classroom domains
  • Configure the name server to support the rndc command
Section 2 Configuring Bind
  • BIND Configuration Files
  • named.conf Syntax and Options Block
  • Creating a Site-Wide Cache
  • Zones In named.conf
  • Zone Database File Syntax
  • SOA - Start of Authority
  • A -Address / PTR-Pointer
  • NS - Name Server
  • CNAME -Alias / MX-Mail Host
  • Abbreviations and Shortcuts
  • $GENERATE
      Lab2 - Configure BIND
  • Configure the name server as the primary master name server for a domain and its corresponding id-addr.arpa domain
Section 3 Creating DNS Hierarchies
  • Subdomains and Delegation
  • in-addr.arpa Delegation
  • Issues with in-addr.arpa
  • RFC2317 & in-addr.arpa
      Lab3 - Configure BIND
  • Create a new subdomain and populate it with a few records
  • Delegate control of a subdomain to another name server
  • Using the techniques described in RFC 2317, delegate in-addr.arpa. control for a subnet to another name server
Section 4 Securing BIND and DNS
  • Split Namespaces
  • Using Views with BIND 9
  • Address Match Lists & ACLs
  • Restricting Queries
  • Restricting Zone Transfers
  • Running BIND in a chroot jail
  • Dynamic DNS Concepts
  • Allowing DDNS updates
  • Using DDNS with "nsupdate"
  • Common Problems
      Lab4 - Advanced BIND Configuration
  • Configure and test dynamic DNS for the domain
  • Restrict zone transfers generally
  • Allow zone transfers of the zone to a specific host
  • Restrict the IP range that the server will accept recursive queries from
  • Configure a BIND name server to run in a chroot'ed environment
Section 5 LDAP Concepts
  • Centralized Authentication
  • Directory Services
  • What LDAP Provides
  • LDAP Concepts and Organization
  • Schema and Entry Referencing
  • LDIF
  • LDAP Architecture, Security, Implementations, and Client Configuration
      Lab5 - Search LDAP
  • Execute LDAP Searches
Section 6 OpenLDAP Servers
  • OpenLDAP Components
  • Configuring slapd
  • Global Parameters and Schema Definition
  • Access Control
  • Backend Types
  • Backend and Database Configuration
  • Indexes and Replicas
  • Replica Configuration
  • Syntax Conformance
      Lab6 - Configure LDAP
  • Configure the LDAP server
  • Create a new directory
  • Add, modify, and delete entries in the LDAP server
Section 7 Using OpenLDAP
  • Managing slapd
  • Online and Offline Data Manipulation
  • Native LDAP authentication and Client Config
      Lab7 - Configure LDAP
  • Create self-signed x509 certificate for LDAP server use
  • Configure LDAP server to enable secure connections
  • Configure LDAP server with baseDN and rootDN settings
  • Install Perl Libraries needed by ldapmigrate
  • Add three UNIX users
  • Use ldapmigrate to import the /etc files
  • SetupDAP client to use native LDAP authentication
Section 8 Using Apache
  • HTTP Operation
  • Apache History and Status
  • Apache Architecture
  • SSL / HTTPS and Apache
  • Apache Configuration Files
  • httpd.conf
  • Dynamic Shared Objects
  • Adding Modules to Apache
  • Apache Logging
  • Log Analysis
  • The Webalizer
      Lab8 - Configure Apache
  • Configure the ServerName directive
  • Optimize Apache by turning off unneeded modules
  • Create an index.html file
Section 9 Virtual Hosting with Apache
  • HTTP Virtual Servers
  • DNS Implications
  • Security Implications
  • IP-based Virtual Host
  • Name-based Virtual Host
  • Port-based Virtual Host
      Lab9 - Configure Apache
  • Configure Apache Virtual Hosts
  • Use the "Main" server for global settings
Section 10 Apache Security
  • Delegating Administration
  • Directory Protection
  • Common Uses for .htaccess
  • Symmetric and Asymmetric Key Cryptography
  • Digital Certificates
  • SSL Using mod_ssl
      Lab10 - Configure Apache
  • Password protect a directory
  • Override MIME types for a single directory
  • Redirect traffic to a different URL
  • Create a test SSL certificate
  • Use Apache and SSL to setup an SSL-enabled site
Section 11 Apache Server- side Programming
  • Dynamic HTTP Content
  • PHP: Hypertext Preprocessor
  • Developer Tools for PHP
  • Installing, Configuring, and Securing PHP
  • Java Servlets and JSP
  • Jakarta Tomcat
  • Installing Java SDK and Jakarta Tomcat
  • Using Tomcat with Apache
      Lab11 - Dynamic Content
  • Write and test dynamic web content using CGI, mod_perl, and PHP
  • Install Apache's Jakarta Tomcat
  • Create dynamic HTML content with JSP
  • Configure the Apache connector mod_jk
  • Mount Tomcat webapps
  • Create a Tomcat admin user
  • Deploy a new webapp via a .war file
  • Mount a new webapp through the Jakarta connector
  • Configure the snipsnap webapp
Section 12 Implementing an FTP Server
  • The FTP Protocol and Operation
  • Active and Passive FTP
  • WU-FTPD
  • vsftpd
  • Configuring vsftpd
  • Anonymous vsftpd
      Lab12 Configure VSFTPD
  • Install and configure vsftpd for basic authenticated access
  • Configure vsftpd for anonymous uploads
Section 13 The SQUID Proxy Server
  • Squid Overview, File Layout, and Access Control Lists
  • Squid ACL application
  • Tuning Squid / Hierarchies
  • Bandwidth Metering
  • Monitoring Squid
  • Proxy Client Configuration
      Lab13 - Configure SQUID
  • Define an ACL for authorized IP networks
  • Apply the ACL using http_access
  • Enable the Squid cachmgr.cgi program
  • View Squid statistics
  • Create a Proxy Auto Configuration file
  • Change the mime-type in Apache for the PAC file
  • Configure a web browser to use the PAC file
  • Create an ICP proxy mesh
  • Secure the default ICP permissions
Section 14 Samba Concepts
  • SMB Network Protocol
  • NetBIOS and NetBEUI
  • NetBIOS Naming
  • Samba Daemons, Clients, and Utilities
  • Samba Configuration Files
  • The smb.conf File
      Lab14 - Configure Samba
  • Install the Samba server and configure it to share your /tmp directory
  • Use smbclient and smbfs to access SMB shares
Section 15 Using Samba
  • Unix and DOS Permissions
  • Unix and Windows Concepts
  • Name and Case Mangling
  • Sharing [homes] and Printers
  • Restricting Access
  • Share-Level and User-Level Access
  • Mapping Users
  • SMB and Passwords
  • The smbpasswd Database
  • User Share Restrictions
      Lab15 - Configure Samba
  • Examine Samba's behavior when handling symbolic links and file permissions
  • Configure the Samba server to use share-level access and user-level access
  • Compare encrypted user-level access with unencrypted user-level access
  • Configure Samba to share users home directories on demand
  • Configure a new group. Add a user to the group
  • Create a directory for use by a group
  • Configure the a share to support a group that is read only for some users and read write for others
Section 16 SMTP Theory
  • SMTP Terminology and Architecture
  • SMTP Commands and Extensions
  • SMTP AUTH and STARTTLS
  • SMTP Session
Section 17 Sendmail
  • sendmail Features, and Process
  • sendmail Architecture, Components, and Configuration
  • Configuration Files
  • Databases
  • Text Files
  • Network Access
  • Masquerading sendmail
  • Controlling access
  • Configuring SMTP AUTH and Configuring SMTP STARTTLS
      Lab17 - Configure Sendmail
  • Install the sendmail SMTP server on the system and configure it to serve domains
  • Configure sendmail to accept remote network connections
  • Configure virtual hosts on sendmail
  • Configure sendmail to use SMTP AUTH for secure relaying
  • Configure sendmail to support STARTTLS
Section 18 Postfix
  • Postfix Features, Architecture, Components, and Configuration
  • master.cf and main.cf
  • Postfix Map Types and Pattern Matching
  • Advanced Options
  • Virtual Domains and Mail Filtering
  • Configuration and Management Commands
  • Postfix Logging and Logfile Analysis
  • chroot’ing Postfix
  • Postfix and SMTP AUTH
  • SMTP AUTH Server and Clients
  • Postfix Extensions
  • Postfix/TLS
  • TLS Server Configuration
  • Postfix Client Configuration
  • Other TLS Clients and Ensuring TLS Security
      Lab18 - Configure Postfix
  • Install the Postfix SMTP server on the system and configure it to serve domains
  • Configure Postfix to accept network connections
  • Configure virtual hosts on Postfix
  • Configure Postfix to use SMTP AUTH for secure relaying
  • Configure Postfix to support STARTTLS and to secure SMTP AUTH
Section 19 IMAP, POP, Spam Filtering and Web Mail
  • Filtering Email
  • procmail
  • SpamAssassin
  • Sendmail Mail Filter (milter)
  • Amavisd-new Mail Filtering
  • Accessing Email
  • The POP3 and the IMAP4 Protocol
  • Dovecot POP3/IMAP Server
  • Cyrus IMAP/POP3 Server
  • Cyrus IMAP MTA integration
  • Cyrus Mailbox Admin
  • Fetchmail and SquirrelMail
      Lab19 - Filtering/Web Mail
  • Install the procmail mail-filtering software and configure it as the default MDA on the server
  • Install SpamAssassin and configure it to flag spam on the server
  • Install and configure Cyrus IMAP
  • Enable POP3 and IMAP over SSL
  • Install and configure the SquirrelMail web email client
Appendix 1 Using NIS
  • NIS History, Overview, and Limitations
  • NIS Advantages and Implementation
  • Creating a NIS Master Server
  • NIS Client Configuration
  • Slave Server Configuration
  • Troubleshooting Aids
      LabAppendix 1 - NIS
  • Configure a NIS master server, client, and slave server
  • Enable ypxfrd for high-performance database transfers between master and slave NIS servers
  • Configure a NIS client system
  • Observe client usage of a NIS slave server when a NIS master server fails

 
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