Welcome to Linux Knowledge Base and Tutorial
"The place where you learn linux"
Let The Music Play: Join EFF Today

 Create an AccountHome | Submit News | Your Account  

Tutorial Menu
Linux Tutorial Home
Table of Contents
Up to --> Linux Tutorial

· Security
· Real Threats
· Restricting Access
· Passwords
· File Access
· The Root Account
· The Network
· What You Can Do About It

Glossary
MoreInfo
Man Pages
Linux Topics
Test Your Knowledge

Site Menu
Site Map
FAQ
Copyright Info
Terms of Use
Privacy Info
Disclaimer
WorkBoard
Thanks
Donations
Advertising
Masthead / Impressum
Your Account

Communication
Feedback
Forums
Private Messages
Recommend Us
Surveys

Features
HOWTOs
News
News Archive
Submit News
Topics
User Articles
Web Links

Google
Google


The Web
linux-tutorial.info

Who's Online
There are currently, 254 guest(s) and 1 member(s) that are online.

You are an Anonymous user. You can register for free by clicking here

  
Linux Tutorial - Security - Restricting Access
  Real Threats ---- Passwords  


Restricting Access

Regardless of what security issue you are talking about, any breach in security can be prevented by not allowing access to the system. Now, this can be taken to extremes by not letting anyone to have access. However, by limiting access to the system to only authorized users, you substantially lower the risk of breaches in security. Keep in mind that there is no such thing as a secure system. This is especially important when you consider that the most serious threat comes from people who already have an account on that system.

Access control has been a part of UNIX for a long time. It is a fundamental aspect of any multi-user system. The most basic form of access control is in the form of user accounts. The only way you should be able to gain access to a Linux system is through an account. Users usually gain access to the system when they have an account set up for them. Each user is assigned an individual password that allows the access. Access to files is determined by the permissions that are set on the files and directories.

Access to various services such as printers or even local file systems is also determined by permissions. In addition, some services, as we shall see shortly can be restricted at a much lower level.

 Previous Page
Real Threats
  Back to Top
Table of Contents
Next Page 
Passwords


MoreInfo

Test Your Knowledge

User Comments:


You can only add comments if you are logged in.

Copyright 2002-2009 by James Mohr. Licensed under modified GNU Free Documentation License (Portions of this material originally published by Prentice Hall, Pearson Education, Inc). See here for details. All rights reserved.
  
Help us cut cost by not downloading the whole site!
Use of automated download sofware ("harvesters") such as wget, httrack, etc. causes the site to quickly exceed its bandwidth limitation and therefore is expressedly prohibited. For more details on this, take a look here

Login
Nickname

Password

Security Code
Security Code
Type Security Code


Don't have an account yet? You can create one. As a registered user you have some advantages like theme manager, comments configuration and post comments with your name.

Help if you can!


Amazon Wish List

Did You Know?
You can get all the latest Site and Linux news by checking out our news page.


Friends



Tell a Friend About Us

Bookmark and Share



Web site powered by PHP-Nuke

Is this information useful? At the very least you can help by spreading the word to your favorite newsgroups, mailing lists and forums.
All logos and trademarks in this site are property of their respective owner. The comments are property of their posters. Articles are the property of their respective owners. Unless otherwise stated in the body of the article, article content (C) 1994-2013 by James Mohr. All rights reserved. The stylized page/paper, as well as the terms "The Linux Tutorial", "The Linux Server Tutorial", "The Linux Knowledge Base and Tutorial" and "The place where you learn Linux" are service marks of James Mohr. All rights reserved.
The Linux Knowledge Base and Tutorial may contain links to sites on the Internet, which are owned and operated by third parties. The Linux Tutorial is not responsible for the content of any such third-party site. By viewing/utilizing this web site, you have agreed to our disclaimer, terms of use and privacy policy. Use of automated download software ("harvesters") such as wget, httrack, etc. causes the site to quickly exceed its bandwidth limitation and are therefore expressly prohibited. For more details on this, take a look here

PHP-Nuke Copyright © 2004 by Francisco Burzi. This is free software, and you may redistribute it under the GPL. PHP-Nuke comes with absolutely no warranty, for details, see the license.
Page Generation: 0.05 Seconds