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2012-06-15 18:24:36 +0100 asked a question Non-SSL security for Sage Math Servers

I am running a Sage Math server on RackSpace and I have to run it in "secure=False' mode as I cannot have SSL active. I am told that the official sage math server at www.sagenb.org also doesnt use SSL. My question is, how best should I make my server reasonably secure without invoking SSL handshaking? I would particularly appreciate knowing how this is done at sagenb.org as your system seems reasonably secure. Any advice (other than asking it to be run in "secure=True" mode) would be most MathBear

2012-06-14 03:50:58 +0100 answered a question jmol doesn't work with anything

Hi! My laptop gave me the option to update a bunch of stuff on my Mintlinux (think "Ubuntu") installation including FireFox and I took it. Now JMOL works just fine! I guess you have to keep everything up to date. Case dismissed! No further problems. cheers, MathBear ^,..,^

2012-06-14 03:44:25 +0100 answered a question accessing SageMath from Second Life

Well, well, well! I figured out the problem and all seems well (or so I hope!) The problem was simply where I was using the command to activate sage. I was doing it from within my sagemath folder and that kept it from working in insecure mode. when I changed to activating sage from the root folder, it worked fine in insecure mode and at the same time is easily accessible from Second Life. I can sign in and open spreadsheets and they will work as expected except of course JMOL images will not work. Second Life does not handle the necessary JAVA applets though it can deal with mainstream JAVA. Tachyon and Canvas3D work just fine though. I require no more to use SageMath in Second Life and if JMOL is needed, everyone in the class can open up FireFox and access the server to do this. You have to use Tachyon anyway to see graphs in published spreadsheets. now, I suppose I can run the server in "secure" mode most of the time unless I want to use it in Second Life then temporarily run it in "insecure" mode to make it accessible. But I want to ask you, How do you secure the sagenb.org server if you arent using SSL on it? I would like to run my server in a mode that is both secure and accessible from Second Life. Could any of you adepts of the mystic order of Sage help me with this? Cheers, MathBear ^,..,^ P.S. For anybody who wants to run their own server (about ten bucks a week on RackSpace if you use 1GB RAM), use the appropriate UBUNTU build and use wget to install Ubuntu64bit sagemath 5.0. You must also use apt-get to download the "screen" tool and run it first to have a stable running sage server.

2012-06-14 02:50:18 +0100 commented question accessing SageMath from Second Life

In my experience, being concise in asking questions all but guarantees misunderstanding, It is better to rephrase the question several different ways in the hopes it will be understood. Let me try a different tack. How do I get the notebook server to function if secure is turned off. The server seems designed not to function if you turn SSL off.

2012-06-14 02:44:27 +0100 commented question accessing SageMath from Second Life

As I stated, the server refuses to run if I set "secure=False".

2012-06-12 21:03:26 +0100 asked a question accessing SageMath from Second Life

Grreetings to all from Math Bear! This question deals with a very serious issue that I really need help with. I have a virtual school at Math Bear Education Initiative in the virtual world of second Life. My emphasis is on math teaching. Second Life in its Viewer2 has greatly expanded its ability to access the internet in a superior way that resembles most standard web browsers. I do not want to burden the saggemathnb.org server with all the activity involved in multuple users simultaneously accessing the server and actively publishing worksheets. As a result I have set up my own sage math server (v.5.0 for 64bit Ubuntu) at https://198.101.203.91:8000 on the RackSpace cloud. this server is accessible from the internet and seems to be quite stable. It implements perfectly all the various special features of current Sage Math. My problem is security considerations prevent me from accessing it from Second Life. I have absolutely no trouble accessing the sage math server from www.sagenb.org I can sign in to my sage math account there from within Second Life on a web active whiteboard surface that I have opened in my classroom. The sign in page comes up and if I sign in it takes me to my notebook and shows me available pages. The pages open up and function just as they are supposed to, the one exception being that JMOL graphics, although they show up within Second Life perfectly well cannot be interacted with but are frozen in place. Since the Second Life media capabilities are rather limited currently with respect to JAVA applets, this is not surprising and not really a problem for me. Indeed I am amazed that JMOL works at all! Canvas3D works also and unlike JMOL is interactive inside Second Life. Tachyon, of course, works fine. Unfortunately, I cannot access my own sage math server at the address listed above from within Second Life. I cannot even access the published worksheets page. In both cases I get the message "SSL handshake failed". I did try running the sage math server in non-secure mode, but besides giving me all sorts of dire warning messages on doing so, it simply refuses to work at all in non-secure mode. Now I think I can safely assume that sagenb.org is being run with security active at all times, no? I DESPERATELY need to know how to make my sage math server accessible in Second life! my plans for math education are centered around making major use of sage math for math teaching in virtual reality (I am also using Geogebra and Twiddla in my classrooms). I know it can be done because sagenb.org is fully accessible from within Second Life. But what can I do to convince my sage math server to accept contact with Second Life and allow me to use sagemath inworld? It will be a huge setback for my plans to adapt Sage Math ... (more)

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2012-06-02 14:06:59 +0100 answered a question jmol doesn't work with anything

Well, I ran sagemath on my desktop computer after disbling the IceTea plugin and now jmol works perfectly just like it is sypposed to. The desktop is 32bit and the laptop, which still has issues is 64bit. I wonder if that has anything to do with it? Why should the laptop work partially (using Chromium) and not FireFox? both the laptop and the desktop are using the same version of Java plugin and the same version of Linux other than 32/64 bit. Hmmmmmmm.....

For those reporting issues with Firefox, please remember to disble the IceTea plugin and enable the Java plugin!

Cheers!

MathBear

2012-06-02 06:45:43 +0100 answered a question jmol doesn't work with anything

Well, I solved one mystery. JMOL is not compatible with the IceTea plugin on FireFox. Disabling the IceTea plugin will prevent JMOL from crashing the browser. on the other hand, all I get is a black pane which isnt helpful. Now on my 64bit ASUS laptop, I find that the CHROMIUM browser does show the JMOL applet, but will only show one JMOL 3D graph at a time. The other graphs all turn to black panes when a new one opens. I have no real idea why fireFox will not work with JMOL but CHROMIUM does. Chromium has the 23 version of the browser whereas FireFox has the 26 version. I am still trying to figure everything out. Cheers, Math Bear

2012-06-02 04:13:07 +0100 asked a question jmol doesn't work with anything

I cannot get jmol to produce 3D graphs with FireFox or Chrome under either windows Vista or mintLinux12. In fact, I have from time to time accessed the sage math server at sagenb.org and jMOL never worked no matter waht my operating system or computer configuration. On Linux with FireFox, the JMOL applet is called up but crashed FireFox before any image can be displayed. With Chromium or FireFox under Windows Vista, I get a black pane and that is it. It has been years since I have actually seen a JMOL 3D graph on Sage Math and I am wondering why it should be such a difficult thing to accomplish? I have both a desktop computer and a laptop and neither will show JMOL. I have no idea what to do.

Any help would be appreciated

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2012-05-31 18:27:21 +0100 asked a question SSR Security Access Issues

Greetings! I have set up the Ubuntu64bit 10.04.3 version of Sage Math on a server at RackSpace Cloud I am renting to use as a remote Sage Math server. as long as I set secure=True and also run the "screen" tool for Linux, the sage notebook runs fine. My intention is to use Sage Math as a resource for teaching math in the virtual world of Second Life. Now I can access the published worksheets from www.sagenb.org/pub from within Second Life without any trouble and display them in-world. This is important for my educational purposes on Second Life where I have a virtual school. In the case of my server at Rackspace, I can easily access published worksheets with a regular browser but I cannot do so from within Second Life. I get the error message that SSL handshake failed. I tried reinstalling Sage Math without using SSL but the notebook refuses to function if I do that, and eventually the installation becomes corrupt if I keep trying. I was forced to rebuild the server from scratch and download the Sage Math program to get things working again. Now, obviously it is possible to access the published worksheets since I had no trouble with this on www.sagenb.org/pub, so i would like to know how to accomplish this on my server. security is not a big deal as no important data is intended to be stored on it, it is just to facilitate interaction. I wouldnt mind running the notebook server unsecured if only it would let me. So far I have not figured out any solution to the problem and would really appreciate some help. Thank You, Math Bear