以下是提供这类解决方案的公司资料：

Secure Net Key (SNK) Digital Pathways, Inc. 201 Ravendale Dr. Mountainview, Ca. 97703-5216 USA Phone: 415-964-0707 Fax: (415) 961-7487 Secure ID Security Dynamics, One Alewife Center Cambridge, MA 02140-2312 USA Phone: 617-547-7820 Fax: (617) 354-8836 Secure ID uses time slots as authenication rather than challenge/response. ArKey and OneTime Pass Management Analytics PO Box 1480 Hudson, OH 44236 Email: fc@all.net Tel:US+216-686-0090 Fax: US+216-686-0092 WatchWord and WatchWord II Racal-Guardata 480 Spring Park Place Herndon, VA 22070 703-471-0892 1-800-521-6261 ext 217 CRYPTOCard Arnold Consulting, Inc. 2530 Targhee Street, Madison, Wisconsin 53711-5491 U.S.A. Phone : 608-278-7700 Fax: 608-278-7701 Email: Stephen.L.Arnold@Arnold.Com CRYPTOCard is a modern, SecureID-sized, SNK-compatible device. SafeWord Enigma Logic, Inc. 2151 Salvio #301 Concord, CA 94520 510-827-5707 Fax: (510)827-2593 For information about Enigma ftp to: ftp.netcom.com in directory/pub/sa/safeword Secure Computing Corporation: 2675 Long Lake Road Roseville, MN 55113 Tel: (612) 628-2700 Fax: (612) 628-2701 debernar@sctc.com

非混杂模式网络接口设备

以前，大多数IBM DOS兼容机器的网卡都不支持混杂模式，所以无法进行sniffing。

但DOS已退出计算机网络舞台，对于现在计算机市场中的网络接口设备，请向供应商查询

是否为非混杂模式设备（即不支持混杂模式）。