Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Mail Systems
Eclipse Documentation

How To Guides
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Problem Solutions
Privacy Policy




NOTE: CentOS Enterprise Linux is built from the Red Hat Enterprise Linux source code. Other than logo and name changes CentOS Enterprise Linux is compatible with the equivalent Red Hat version. This document applies equally to both Red Hat and CentOS Enterprise Linux.

14.5. Password Maintenance

How often should I change my password? What should my password look like?

For security reasons, it is a good idea to change your root and user passwords regularly. Experts vary on how often this change should occur, but most agree that passwords should be changed multiple times each year.

Passwords should not be based on a dictionary word should be at least six characters, and should include: both lower-case and upper-case letters, at least one number, and at least one punctuation mark. Don't write your password down or store it in an unencrypted file. Don't give your password to anyone.

User passwords can be set to automatically expire after a certain amount of time. Refer to the Red Hat Enterprise Linux System Administration Guide for more information.

  Published under the terms of the GNU General Public License Design by Interspire