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In CrushFTP version 9 we can integrate our One Time Password (OTP) based authentication feature with Google's software based token device Google Authenticator , using Time based OTP (TOTP). The server provides a 80-bit secret key , on a per user basis, as a QR code, that can be imported using Authenticator's QR reader.

Server side configuration
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Will need to enable one of our OTP methods, using SMS or Mail based OTP, and enable the Validated logins checkbox. The user needs to be able to log in at least once, using conventional OTP. First, will need to configure the OTP provider on the Preferences page.