  Nowadays, security is becoming a major issue and concern. More and more
organizations like hospitals, metropolis or banks are under cyberattacks and
have to improve their network infrastructure security. The first prerequisites
are to authenticate users, to provide identity and to grant just the needed and
useful accesses. These requirements can be solved by implementing a Single
Sign-On (SSO) solution. It is an authentication scheme that permits a user to
log in with a single identity to any of several related, yet independent,
systems. It allows users to log in once and to access services without
authenticating again. SSO solutions are classified depending on Authentication,
Authorization, and Accounting features. The 'AAA' acronym defines a framework
for intelligently controlling access to resources, enforcing security policies,
auditing usage, and providing the information necessary to bill for services.
These combined processes are considered important for effective network
management and cybersecurity. LemonLDAP::NG (LL::NG) is a full AAA WebSSO
solution. It implements all standard authentication and identity federation
(IdF) protocols. The main LL::NG's advantages compared to other products are
its plug-in engine and its advanced handlerbased protection mechanism that can
be employed to protect Server2Server exchanges or to offer the SSO as a
Service, a solution to implement a full DevOps architecture. LL::NG is a
community and professional project mainly employed by the French government to
secure Police, Finance or Justice Ministries and a French mobile operator IT
infrastructures since 2010. But for several years, contributions come from all
around the world and LL::NG is becoming more and more popular.
