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These are boolean values (set as 1 or 0) which control whether the
system uses HTTPS in various circumstances. If AUTH_LOG is
set, the system uses HTTPS to transmit passwords when logging in.
If KEEP_SECURE is set, the assignment editor will stay
in encrypted mode. If DLD_SECURE is set, then the instructor's
downloads of submitted files will be encrypted, and if SUBM_SECURE is set,
the student's uploads are likewise protected. These are off
by default, though the setup script will turn on AUTH_LOG if it
thinks you are running HTTPS on your server.
To make any of
these work, you must configure your web server to accept HTTPS connections.
If you don't have HTTPS available, simply set all these to false, and
the system will work fine, though passwords will be transmitted in plain.
If you use both forms (if these variables are not all set the same),
the submit system assumes both services are running on the same machine.
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