A free radius server that allows you to save your session log and event log
TekRadius is a freeware RADIUS server.
TekRadius complies with RFC 2865 and RFC 2866. It currently supports just Microsoft SQL Server. It runs as a Windows Service and comes with a Win32 management interface.
TekRadius allows you to log session details into a log file or to Event Log. You can select IP address to be listen and Radius Authentication and Accounting ports. You can optionally run it in Authorization only mode and you can turn off Accounting if you wish. You can also define your own Authorization SQL SELECT clause.
点这里下载-> TekRadius v2.7 英文版