CAS requires users to authenticate themselves before accessing protected files or applications on the web. Users authenticate themselves by logging into CAS with their VCU eID and password. Once a user is authenticated, he/she will be able to access any VCU CAS enabled application within their level of permission. For security, CAS resets when the browser is closed. Popular VCU applications that require a CAS login include myVCU Portal, events calendar, and myMail for students.