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When was Point-to-Point Tunneling Protocol (PPTP) with Microsoft Point-to-Point Encryption (MPPE) keying support added to Cisco Secure ACS for Windows?

April 26, 2017added encryption keying Microsoft MPPE Point-to-Point PPTP Protocol support tunneling

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When was Point-to-Point Tunneling Protocol (PPTP) with Microsoft Point-to-Point Encryption (MPPE) keying support added to Cisco Secure ACS for Windows?

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A. PPTP version 2.6 requires Microsoft Challenge Handshake Authentication Protocol (MS-CHAP) authentication if MPPE keying (encryption) is to be done. In earlier versions, PPTP authentication is possible. However, support for MPPE keying was not added until ACS version 2.6.