Dan RenfroeDan Renfroe has been a technology professional for over ten years, working in diverse environments such as higher education, public safety, and federal government. He has a broad range of technical experience, including systems administration and anaysis, multimedia development, technical writing and quality assurance. He is currently a consultant for OST, Inc., a management consulting firm based in Washington, DC. He has authored multiple mobile and wireless technology articles for Network Computing magazine on topics ranging from mobile e-mail servers and mobile VPN applications to WLAN infrastructure and analysis tools. Read More Read Less