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Date:      Thu, 20 Aug 2015 16:50:44 -0400
From:      Jaime Kikpole <jkikpole@cairodurham.org>
To:        "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>
Subject:   Strange SFTP and PAM failure
Message-ID:  <CA%2Bsg5RQ-yMgsbq5VA-SNDDkUaYcVJUEPAe-iqfDLR1EFuVyCTg@mail.gmail.com>

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I'm using a product called PowerSchool which is trying to send data to
the FreeBSD server over SFTP.  The service provide hosts it, so I
can't do any debugging on the far end.

What I know for sure is that any other program (FileZilla, command
line sftp, etc.) will connect, authenticate, and view files just fine.
This includes on-site and off-site traffic.  PowerSchool, on the other
hand, seems to have something go wrong during the authentication
steps.

When I tried to make one of these failed connections, I saw this in
/var/log/messages:

Aug 20 16:37:48 apps sshd[564]: error: PAM: authentication error for
<<username>> from <<IP of PowerSchool>>
Aug 20 16:37:48 apps sshd[564]: error: Received disconnect from <<IP
of PowerSchool>>: 3: com.jcraft.jsch.JSchException: Auth cancel
[preauth]

Any idea what might be causing this?


-- 
Jaime Kikpole
Network Administrator
Cairo-Durham Central School District

Technical Support:
help@cairodurham.org
go.cairodurham.org/techtips

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