If you are new to Ubuntu and have been using other distros like Fedora or openSUSE before, then you may find it frustrating that when you issue the "su" command it will result to authentication failure.By default, access to root account password is disabled in Ubuntu for added security measures.

Enabling the root account in ubuntu is rarely necessary. Almost everything you need to do as root of an Ubuntu system can be done via sudo or gksudo. If you really need a persistent root login, the best alternative is to simulate a root login shell using the following command... It is tested in ubuntu 9.10 Karmic Koala also.

This article describes configuration techniques of module mod_ssl, which extends a functionality of Apache HTTPD to support SSL protocol. The article will deal with authentication of server (One-way SSL authentication), as well as it will also include authentication of clients by using certificates (Two-way SSL authentication).

Following up on "Implementing One-way Encryption in PHP," my previous tutorial about using one-way encryption to build a secure online diary application, this article explores using PHP encryption for login authentication.

Fedora is one of very few distributions that does not have the auto-login feature in its graphical user management tool. Auto-login allows the system to automatically login a user without requesting authentication, that is, it enables password-less logins. While it is a very convenient feature, it is a security risk. Why?

By default, the root account password is locked in Ubuntu - Canonical neither supports nor advocates enabling the root account. This means that you cannot login as root directly or use the su command to become the root user. However, since the root account physically exists it is still possible to run programs with root-level privileges.

The authentication of FS Daily is so crappy currently and it is such a pain to use it every day. It seems it is becoming crappier by day. I never get my remember my login correctly. Forget it, just to post a news or to vote on a story you need to sign in many times, refresh and above all pray it will let you do it.

Root is the default name for system administrator in a *NIX system - a super user who can do anything and everything within the operating system. As a result, root login should be used with special care. While working with a root login, we can end up doing a lot of harm to our system as well as the data, accidentally.

OpenID is a widely adopted technology for user authentication in web applications. It relies on the concepts of distributed user authentication in blog applications. This small cookbook explains step-by-step how to install and configure the Open Source Apache module mod_auth_openid.