Todd Lammle

Todd Lammle is the Authority on Cisco Certification, CompTIA, Security and Internetworking, and is Cisco certified in all Cisco certification categories. He is a world-renowned author, speaker, trainer, and consultant. Todd has four decades of experience working with LANs, WANs, large enterprise licensed and unlicensed wireless networks, Cisco Security with Firepower/FTD, ISE, Stealthwatch, Cisco Defense Orchestrator and more. His three decades of real world experience is prevalent in his writing; he is not just an author but an experienced networking engineer with very practical experience working on the largest networks in the world at such companies as Xerox, Hughes Aircraft, Texaco, IBM, AAA, Cisco and Toshiba, among many others. Todd has published over 130 books, including the very popular CCNA: Cisco Certified Network Associate Study Guide, CCNA Wireless Study Guide, and CCNA Data Center Study Guide, and Cisco Firepower Threat Defense (FTD), all from Sybex. He runs an international consulting and training company based in Colorado, Texas, and San Francisco. You can reach Todd through his forum and blog at www.lammle.com.