About the Reviewer

John Schreiner is a Major in the United States Marine Corps and a networking and security instructor. He serves as a Company Commander, responsible for training Marines on the East Coast on the latest commercial technologies (Cisco, Microsoft, Riverbed, Harris, and so on.). John brings experience teaching CISSP, Security+, and CCNA: Security.

John holds a CISSP, CCNA: Security, CCNP, CCDP, WCNA, and various other certifications. He also blogs at http://www.unadulteratednerdery.com/. In addition to this title, John was the technical reviewer for Cisco Unified Communications Manager 8: Expert Administration Cookbook, Tanner Ezell, Packt Publishing.