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Microsoft Point-to-Point Encryption (MPPE)

Updated: January 21, 2005

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

Microsoft Point-to-Point Encryption (MPPE)

Microsoft Point-to-Point Encryption (MPPE) encrypts data in Point-to-Point Protocol (PPP)-based dial-up connections or Point-to-Point Tunneling Protocol (PPTP) virtual private network (VPN) connections. 128-bit key (strong), 56-bit key, and 40-bit key (standard) MPPE encryption schemes are supported. MPPE provides data security for the PPTP connection that is between the VPN client and the VPN server.

For more information about configuring connections, see Configure a connection to a remote network.

Note

  • MPPE requires encryption keys as generated by Microsoft Challenge Handshake Authentication Protocol (MS-CHAP), Microsoft Challenge Handshake Authentication Protocol version 2 (MS-CHAP v2), or Extensible Authentication Protocol-Transport Level Security (EAP-TLS) authentication process.

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