Chapter 6 1. Discuss the role of access control in information systems, and identify and discuss the four fundamental functions of access 2. Define authentication and explain the three commonly used 3. Describe firewall technologies and the various categories of 4. Discuss the various approaches to control remote and dial-up 5. Describe virtual private networks (VPNs) and discuss the 6. Explain how technical controls are essential in enforcing policy for control systems authentication factors firewalls access by authenticating and authorizing users technology that enables them many IT functions that do not involve direct human control. 7. Explain that access control is the method by which systems determine whether and how to admit a user into a trusted area of the organization. 8. Explain how a firewall prevents specific types of information from moving between an external network, known as the untrusted network, and an internal network, known as the trusted network. 9. Discuss how the firewall may be a separate computer system, a software service running on an existing router or server, or a separate network containing a number of supporting devices