This example was created on the base of SysML requirements diagram in the webpage "V4/Use Case for Views: Collaboration" from the FreeIPA website.
"This page describes a prototype implementation of a "merged domain" in a collaboration context. The hosting organization defined a collaboration environment outside it's security boundary: the network exists outside the organizational firewall, and corporate machines (i.e., Windows machines joined to the internal active directory domain) are not allowed to plug into the collaboration network. The collaboration environment is distinct from the internal corporate environment to such a degree that active directory is only leveraged for user authentication and basic user attributes (sn, givenName, mail, telephoneNumber). This basic information about corporate users was merged with external users defined and managed by FreeIPA. ...
Requirements for upstream identity providers as well as for "identity processing" once the identities enter the local domain are presented in the following SysML requirements diagram."
[freeipa.org/page/V4/Use_Case_for_Views:_Collaboration]
The example "Identity requirements diagram" was drawn using the ConceptDraw PRO diagramming and vector drawing software extended with the SysML solution from the Software Development area of ConceptDraw Solution Park.