Free Trial

Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.

  • Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint
Share this Page URL
Help

4. Authentication Techniques and Infrastructures

Chapter 4. Authentication Techniques and Infrastructures

Before you can perform any operation on a Linux system, you must have an identity , such as a username, SSH key, or Kerberos credential. The act of proving your identity is called authentication, and it usually involves some kind of password or digital key. To secure your Linux system, you need to create and control identities carefully. Our recipes span the following authentication systems:

Pluggable Authentication Modules (PAM)

An application-level, dynamically configurable system for consistent authentication. Instead of having applications handle authentication on their own, they can use the PAM API and libraries to take care of the details. Consistency is achieved when many applications perform the same authentication by referencing the same PAM module. Additionally, applications needn’t be recompiled to change their authentication behavior: just edit a PAM configuration file (transparent to the application) and you’re done.


  

You are currently reading a PREVIEW of this book.

                                                                                                                    

Get instant access to over $1 million worth of books and videos.

  

Start a Free 10-Day Trial


  
  • Safari Books Online
  • Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint