Aruba Networks have the NAC solution named as Clearpass and offers a RADIUS based solution and is available for hardware and the virtual appliances.
Well talk about the Strengths of Aruba's 802.1X innovations, It include a built-in certificate authority to Clearpass, which eases BYOD implementations by not requiring an external certificate authority. The Clearpass Onboard module provides the ability to revoke and delete certificates.
Clearpass offers a strong guest network application. Guest portals can be customized with a wide range of options, including localized language support. Granular policies allow guests to share printers and projectors that use Apple's Bonjour protocol.