Although I am not a network guru, it sounds like your tech guy is
right and the proxy server is causing the trouble.  I don't know how
you would fix that, but maybe someone else on this list does.

There is an upcoming rewrite of the notebook-server implementation
that might help with this but William Stein would have to confirm
that.

Are you using sagenb.org?

-M. Hampton

On Sep 23, 7:06 am, michel <[email protected]> wrote:
> Hi,
>
> I'm a high school math teacher experimenting with getting students to
> use SAGE.  I've been successful in getting my students to open their
> own notebook accounts.  I took my classes to the computer lab one day,
> and during the session the kids started experiencing other names on
> their accounts.  The names were all from our class.  No one had access
> to anyone else's files, but suddenly the account name would shift to
> someone else's.  And then yesterday in my regular classroom while I
> was demoing SAGE, suddenly the name on my account changed to that of
> one of my students.  She was not in class that period, and I have to
> check to see if maybe she was using SAGE somewhere else on campus at
> that time.  It was all very mysterious, and so I checked it out with
> our tech guy.  I was wondering if the issue was our network.  His
> response was, "I wonder if technically we’re seen as just a singular
> IP address (which is our proxy).  Because, everyone is using the same
> proxy (thus same IP) to access this website.  So even though everyone
> is making an individual login, it’s all going through the same IP
> address."  Any ideas as to what's happening?
>
> Thanks very much,
>
> Michel Paul
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