chmod Special Permissions Quiz

False (B)

passwd

<p>group</p> Signup and view all the answers

<p>Setuid = Allows running a file with the owner's permissions Setgid = Allows running a file with the group's permissions Sticky Bit = Only file owner can delete their files in a directory SUID on directory = Files inherit the directory’s group</p> Signup and view all the answers

<p>rwsr-xr-x (D)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>chmod g+s directory</p> Signup and view all the answers

<p>Allows a file to run with the owner's permissions (C)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>chmod o+t directory_name</p> Signup and view all the answers

<p>Pluggable Authentication Modules</p> Signup and view all the answers

<p>pam_unix.so = Handles traditional password-based authentication pam_ldap.so = Authenticates users against an LDAP directory pam_tally2.so = Tracks failed login attempts and locks accounts pam_cracklib.so = Enforces password strength rules</p> Signup and view all the answers

<p>account (D)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Restricts file deletion to the file owner and root</p> Signup and view all the answers

<p>/etc/pam.d/</p> Signup and view all the answers

<p>auth = Handles user authentication account = Verifies account validity password = Manages password updates session = Sets up user sessions</p> Signup and view all the answers

<p>pam_cracklib.so (A)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>PAM processes the request and determines the authentication result based on its configured modules.</p> Signup and view all the answers

<p>chmod g+s directory_name</p> Signup and view all the answers

A special permission in Linux/Unix for executables that temporarily allows users to run the file with the owner's permissions, not their own.

When the Setuid bit is set, it allows users who execute the file to temporarily run it with the file's owner's permissions, regardless of their own permissions.

The passwd command updates passwords using elevated privileges, so it needs Setuid to allow regular users to temporarily run as root.

A special permission in Linux/Unix that allows users to temporarily run with the group permissions of a file instead of their own.

Similar to Setuid, but it allows users to run with the group permissions of the file, instead of the user's own.

It's useful when you have a shared directory where files created by users need to have the same group ownership. For example, a team shared directory.

The sticky bit, denoted by 't' in chmod, is a permission applied to directories that restricts file deletion or renaming to only the file owner or root.

It prevents other users from deleting or renaming files in the directory, even if they have write permissions. This ensures that the owner or root maintain control.

Special permissions that allow a file to run with the owner's privileges.

Special permissions that allow a file to run with the group's privileges.

A directory with the Setgid bit set, so new files created inside inherit the group ownership of the directory.

A bit that, when set in a directory, prevents users from deleting or renaming files that aren't owned by them.

A framework that manages user authentication for various applications and services in Unix-like operating systems.

Small, reusable components that handle specific authentication tasks in PAM.

A directory where PAM configuration files are located.

A PAM configuration line that defines how a module is used and what to do if it succeeds or fails.

Type of PAM module responsible for handling user authentication using passwords, etc.

Type of PAM module responsible for checking if a user's account is valid.

Type of PAM module responsible for managing password updates.

Type of PAM module responsible for managing user sessions.

A PAM module that handles traditional password-based authentication.

A PAM module that authenticates users against an LDAP directory.

This module enforces password strength rules, like minimum length or character types.

PAM's flexibility lets you customize authentication processes to suit specific needs.