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.
I'd like to thank my amazing wife, Jacki, whose steadfast support and embrace of my nerdy endeavors are a constant reminder that she’s the best thing that has ever happened to me.