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Objectives

• Identify and prioritize data that needs backup
• Employ different kinds of backup methods, depending on the situation
• Establish efficient backup and restore strategies
• Use different backup utilities, such as 
  • cpio
  • tar
  • gzip
  • bzip2
  • xz
  • dd
  • rsync
  • dump
  • restore
  • mt
• Describe the two most well known backup programs
  • Amanda
  • Bacula

Why Backups

• Data is valuable
• Hardware fails

Objectives

• Explain the basic concepts that motivate the use of PAM
• List the steps involved in the authentication process
• Use and modify PAM configuration files
• Know how to interpret PAM rules and create new ones
• Apply LDAP to use and administer distributed directory services over the network

PAM: A Unified Approach to Authentication

In order to unify the authentication mechanism, the library

​libpam

​Is needed so that most applications can exploit it in order to perform the authentication process.