IDM-02: Login to a community’s user portal with a community username and password

Executive Summary: 
A community member needs to login to a community’s user portal using his or her community username and password.
User Importance Summary: 
Access to resources and services in the public research computing community requires persistent identities for individuals. Many community members aren't affiliated with an organization that participates in federated identity systems, so the community must provide login credentials.
Target Communities and Sizes: 
Community members - 10,000 < N < 100,000