Identity management (IDM), sometimes also identity and access management (IAM), deals with how users gain a digital identity, the roles, and sometimes the permission granted to this identity.
There is a number of software which helps doing identity management. Amongst, in alphabetical order, tools and related:
- Google Authenticator, two-step authentication, using one time passwords.
- Initiative for Open Authentication, standardization on how to get an access token for a web API call. Includes passwords, but will in future use WebAuthn.
- kanidm, some info here. Successor of LDAP, Kerberos. Server side of WebAuthn.
- Kerberos, with Active Directory integration, FreeIPA, some info from a SuSE developer here
- LDAP authentication, passwords in a central server.
- PAM, Linux pluggable authentication modules. Kerberos, LDAP, kanidm, etc. can be plugged into Linux.
- Universal 2nd Factor, replaced by WebAuthn.
- Users and groups. can be stored on a system or centrally via LDAP, kanidm.
- WebAuthn, browser web authentication API, replacement for password authentication, uses Yubikey, or the built-in hardware of a device like TouchID or Windows Hello. Backwards compatible with universal 2nd Factor, server side provided by kanidm e.g.