Single Sign-on (SSO) allows a user to access multiple applications with a single set of credentials.
SSO Implementations
SSO implementations:
- Kerberos
- Active Directory Federation Services (ADFS)
- Central Authentication Services (CAS)
Kerberos
Kerberos is both a SSO implementation and a AAA network protocol. You can read more about Kerberos on this post.
Active Directory Federation Services (ADFS)
Active Directory Federation Services (ADFS) is an Active Directory feature developed by American company Microsoft.
Central Authentication Services (CAS)
Central Authentication Services (CAS) is a web SSO protocol. It is FOSS under an Apache 2.0 license. You can find the official web and the repository.
Other AAA protocols like RADIUS or TATACS+ are not a SSO.