Red Hat Linux Networking & System Administration, 3ed About the Author Terry Collings is the Instructional Technologist at Muhlenberg College where he is responsible for developing smart classroom technologies. He is a Red Hat System Administrator, has taught networking and certification courses, and a veteran author. Kurt Wall is the technical lead and supervisor of content for TimeSys Linux, a hard real-time version of Linux for use in embedded systems. He has written a number of Linux and Unix programming books and articles.