Here is what I'm finding. I'm using the IP address of my own computer for 
testing. At the course level I set !130.126.123.12 for the parameter "Client 
IP/Name Access Control [Part: 0]"  Then in a folder I choose to represent the 
exam to be taken in the testing center, I enter 130.126.123.12 for the same 
parameter at the folder level.

What I find is that with the course coordinator role I continue to see 
everything. That's no problem but means you have to switch to student role to 
test the results. As a student on my computer with that IP address, it works as 
I had hoped: I can access the content of the "exam" folder but everything else 
in the course shows up as "Not open to be viewed from this location" (note that 
if "Hide Closed Discussion" is not set to "yes" the discussions attached to 
problems continue to be visible even though the problems are not).

HOWEVER, when I go to a different computer -- emulating a computer outside of 
the testing center, NOTHING in the course is accessible. EVERYTHING in the 
course, the "exam" folder along with everything else, says that it is not open 
to be viewed from this location.

My theory then is that using the ! operator in front of the IP address either 
requires a syntax I'm not using (I've tried direction in front of the IP, with 
a space between ! and IP, and with ! followed by IP wrapped in parens...) or is 
simply not understood. Thus although it appears to work correctly on my 
computer because the exam is to be accessed only from my IP and nothing else is 
to be accessed, from any other IP address Lon-Capa is treating the !IP entry as 
an IP address to be matched and since nothing matches that, nothing is 
available...

Is that what's going on or is there yet some way to "blacklist" IPs we don’t 
want the content accessed from?

 Thank you!

Doug

 

Douglas Mills

Director of Instructional Technology

Department of Chemistry

University of Illinois


 

On 2/5/19, 11:35 AM, "LON-CAPA-users on behalf of Mills, Douglas G" 
<lon-capa-users-boun...@mail.lon-capa.org on behalf of dmi...@illinois.edu> 
wrote:

    To clarify a bit further,  we are looking at presenting exams in a testing 
center. The testing center eliminates access to other IP addresses, so our 
interest is indeed eliminating access to other course materials  from the IP 
address of the student’s computer.  We do use the technique Stuart has outlined 
in many of our exams, locking out access to other parts of the course via the 
start timer. The concern in this case is that one thing the testing center 
would not manage well is the possibility that a student could log into the 
course and open additional course resources in other tabs before starting the 
exam timer. The testing center accommodates exams from multiple courses at one 
time and Lon-Capa will be a new means of delivery for them, so this possibility 
will not likely be monitored well.
    
    That said, if putting ! in front of a range of IPs in a slot works then my 
thought is to essentially put the whole course into a slot which excludes 
access to the course from the testing center range of IPs and then override 
that at the folder level for the exams themselves with a slot that only allows 
access from the testing center IP range. Does that sound feasible?
    
    Doug
    
    -sent from mobile-
    
    > On Feb 5, 2019, at 11:05 AM, Bynum, Lee Hamilton <leeby...@illinois.edu> 
wrote:
    > 
    > It isn't a perfect match, but it's definitely a step in the right 
direction.  Thanks Stuart!
    > 
    >> -----Original Message-----
    >> From: LON-CAPA-users <lon-capa-users-boun...@mail.lon-capa.org> On
    >> Behalf Of l...@egr.msu.edu
    >> Sent: Tuesday, February 5, 2019 10:55 AM
    >> To: 'Discussion list for LON-CAPA users' 
<lon-capa-users@mail.lon-capa.org>
    >> Subject: Re: [LON-CAPA-users] Restricting Resources By IP Address
    >> 
    >> Slots block the IP address student where the student can log in, not the 
IP
    >> ranges that they access AFTER they are logged in. Just precede the IP 
address
    >> range with !. However, that does not do what you are seeking, which is to
    >> block browser access to certain IP ranges AFTER they are logged in.
    >> 
    >> From: LON-CAPA-users [mailto:lon-capa-users-boun...@mail.lon-capa.org]
    >> On Behalf Of Bynum, Lee Hamilton
    >> Sent: Tuesday, February 05, 2019 11:31 AM
    >> To: lon-capa-users@mail.lon-capa.org
    >> Subject: [LON-CAPA-users] Restricting Resources By IP Address
    >> 
    >> Hello Everyone,
    >> 
    >> We've been working with Lon-Capa's ability to grant access to a resource 
by
    >> IP address in order to allow an exam to only be accessed when a student 
is in
    >> an exam room.  This can be done with slots and resources parameters.
    >> However, we would also like to deny access to resources (or courses)  by 
IP
    >> address.  That way when a student is in the exam room they have access to
    >> the exam but do not have access to the rest of the course.
    >> 
    >> Does anyone know if there is a way to blacklist IP addresses for Lon-Capa
    >> resources or slots?
    >> 
    >> Lee
    >> 
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