ipUnplugged
http://www.ipunplugged.com/ipUnplugged software products for seamless and secure roaming across public and enterprise LANs, WLANs, GPRS, CDMA, 3G/4G and WiMAX networks. The ipUnplugged Roaming Client, Roaming Gateway, and Roaming Server software enables users to roam securely and seamlessly from one network... Read More