Free radius server implementation XtRadius is a free radius server implementation. The main feature is that it can handle user accounting and authentication information via external fully configurable scripts. . The Radius server is based on Cistron Radius 1.6.6. You can write script to make you own auth and/or accounting routines without having to patch the main server. . Communication between XtRadius server and external scripts can be made using command line parameters or via environment variables. Manual and Help Documents