TekRadius是一个免费的RADIUS服务器，可以支持RFC 2865和RFC 2866。RADIUS（远程用户拨号认证系统）是一种在网络接入服务器（Network Access Server）和共享认证服务器间传输认证、授权和配置信息的协议。

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运行平台:Windows 2000/2003,MS SQL2000/2005,.NET 2.0平台

TekRADIUS is a RADIUS server for Windows. You're free to use freeware version for both commercial and personal use. We only ask you to provide feedback.

TekRADIUS tested on Microsoft Windows XP and Windows 2003 Server. Please see installation requirements at Support section and don't forget to read Readme.txt file comes with the distribution.

Features

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. Major features:

- Supports features described in RFC 2865 and RFC 2866 (RADIUS protocol).
- Logs system messages, errors and session information to a log file.
- Limits number of simultaneous sessions for the users.
- Uses Authentication method as a RADIUS check item.
- RADIUS Dictonary can be edited through TRManager GUI.
- Authentication and Accounting ports are user selectable.
- You can create SQL database and tables through TRManager GUI.
- You can map RADIUS Accounting attributes to Accounting table fields.
- TekRADIUS can be run in Authentication only or Authorization only mode.
- You can define which RADIUS attribute will use for User-Name substitute.
- You can define own Authorization query string.
- PAP, CHAP, MS-CHAP v1-v2, EAP-MD5, EAP-MS-CHAP v2, PEAP
  (PEAPv0-EAP-MS-CHAP v2) and Digest (draft-sterman-aaa-sip-00.txt) authentication
  methods are supported.
- You can specify Expire-Date and Time-Quota for the users.
- Quick and easy installation.