David Hucaby, CCIE No. 4594, is a lead network engineer for the University of Kentucky, where he works with health-care networks based on the Cisco Catalyst, ASA, FWSM, and VPN product lines. He was one of the beta reviewers of the ASA 8.0 operating system software. He has a B.S. and M.S. in electrical engineering from the University of Kentucky. He is the author of three other books from Cisco Press: "CCNP BCMSN Official Exam Certification Guide," "Cisco Field Manual: Router Configuration," and "Cisco Field Manual: Catalyst Switch Configuration," He lives in Kentucky with his wife, Marci, and two daughters.