## Dial-up Authentication Protocols

Windows NT supports the following Point-to-Point Protocol (PPP) authentication protocols for both the client and server side Remote Access Service (RAS) for Windows NT: Password Authentication Protocol (PAP), Shiva Password Authentication Protocol (SPAP), Challenge Handshake Authentication Protocol (CHAP), and Microsoft CHAP (MS-CHAP). The information transmitted across the RAS link can be encrypted with RSA RC-4.

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Last Updated: December 1, 1997