Hi, Can anyone give me details about FreeRadius compatibility? My questions are : 1- Dose radius operate easily with Cisco equipments (including firewalls, VPN, … ) and other hardware VPN servers? 2- The same question for software VPN, such as Microsoft Routing and Remote Access Server (RRAS)? 3- the same question for access points? 3- What version or variants of the following standards and methods dose radius support : X802.1X, EAP-X? - Is there available plug-in that allow to interface with ActiveDirectory ? LDAP directories ? Databases (Oracle, MySQL, etc) ? Where can I find the features of the actual version of radius? I want to develop a plug-in for FreeRadius. This plug-in should be able to handle authentication requests send from a VPN server (either hardware, Cisco or a Software (MS RRAS) implementation) or an AccessPoint. The second requirements, is that this plug-in should be able to interface with the different users Data store including ActiveDirectory, LDAP directories and Databases, to accomplish user authentication. How should I proceed to do this? Should I develop multiples modules? Is their any existing code that I can use to develop such a plug-in? Any additional indication are welcome. Thanks in advance.