Single Sign On (SSO) with LemonLDAP::NG

Single Sign On (SSO) is a solution that provides a single way to authenticate users in all applications at once without prompting for single authentications, and single sign-off is a way to sign off and terminate sessions in all applications protected by an SSO solution.


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Some benefits are obtained when using an SSO solution:

  • Using the same user and password for all applications reduces the excessive number of passwords that a person has to remember;
  • reduces the time a person spends on typing a lot of users and passwords to log in;
  • reduces the time spent by help desk teams to reset users passwords.

LemonLDAP::NG is an open source project that implements an SSO application with full triple AAA (Authentication Authorization Accounting) protection. It’s has a GPL license and uses others powerful projects like Apache, Perl, and Perl Modules to deliver a single sign-on solution.

This project is well documented and provides a great web interface to configure it. You can see some screenshots and customize it if you want.

LemonLDAP::NG installer can be found in Ubuntu repository to be easily installed using aptitude or apt-get. The project distributes LemonLDAP in a tarball file, rpm, deb and SVN access to check out the latest version.

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If you want to test LemonLDAP, this tutorial can be useful – Quick Start Tutorial by LemonLDAP Documentation

Learn more information about how it works in “presentation” and “main features” pages.


Fernando Mariano

Graduated in Computer Engineering and has been working with Systems Administration for 9 years and develops his startup called Enter Concursos.

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