Todd Lammle, certified in almost every Cisco category, is the authority on network certification and internetworking. He is a world-renowned author, speaker, trainer, and consultant with over 100 study guides in print. Todd has over 30 years of experience working with LANs, WANs, and large licensed and unlicensed wireless networks, and currently is working as a Cisco Security expert with Firepower and FTD on large Cisco projects. He’s president and CEO of GlobalNet Systems Solutions, inc as well as Todd Lammle, LLC., a network-integration and advanced training firm based in Colorado, Texas, and San Francisco, California.