RE: Jaws Tandem

  • From: "Thomas J. Hesley" <pulse@xxxxxxxxxxxxxxxxxxxxxxx>
  • To: <jfw@xxxxxxxxxxxxx>
  • Date: Fri, 28 Nov 2008 11:25:53 -0500

Well, unless FS blocks VPN usage with Tandem Direct, it should work.  We'd
have to try it to be sure.  I'd be willing to do this if someone wants to
partner with me in the effort.  But I must run JAWS 10 in 40-minute mode --
I have no up-to-date SMAs.

Tom Hesley


-----Original Message-----
From: jfw-bounce@xxxxxxxxxxxxx [mailto:jfw-bounce@xxxxxxxxxxxxx] On Behalf
Of E.J. Zufelt
Sent: Friday, November 28, 2008 7:17 AM
To: jfw@xxxxxxxxxxxxx
Subject: Re: Jaws Tandem

Good morning Tom,

Thanks for the excellent explaination of how one could use safeguards to 
prevent applications from working over an external IP network.

I wonder what result there would be if one attempted to run TD over the 
Internet using a secure VPN.

Thanks again,
Everett


----- Original Message ----- 
From: "Thomas J. Hesley" <pulse@xxxxxxxxxxxxxxxxxxxxxxx>
To: <jfw@xxxxxxxxxxxxx>
Sent: Friday, November 28, 2008 6:34 AM
Subject: RE: Jaws Tandem


> There are some key differences between Tandem over the Internet (TI) and
> Tandem Direct (TD).  TD requires no access the Tandem Center, and is thus
> more secure since no connectivity data need be sent over the Internet.
> Normally, this center acts as a go-between between two PCs.  It generates
> meeting IDs and provides a path between two JAWS computers.  In TD, since
> the connection is DIRECT, the controller user (not the Tandem Center) must
> create a meeting id and supply it to the target user.  Also, TD uses a
> different port number (3000) to connect to the target than TI (12000). 
> You
> don't need Internet access to use TD, so long as there is some sort of IP
> connectivity available between the controller and target machines, which 
> is
> typically provided by a local area network connection if not an Internet
> connection.
>
> I'm not sure however, if TD restricts IP level communications in some way.
> This could be done in several ways:
> * FS could limit the number of IP packet hops between controller and 
> target
> to 1 or 2,
> * They could prevent communication between computers that do not share the
> same IP address segment,
> * or they could stop communications by forcing time-outs if packets take
> longer than they would on local area networks.
>
> Such restrictions are entirely possible as a means of distinguishing TD 
> from
> TI, and making sure that TD only works on local area networks.
>
> Tom Hesley
>
>
>
> -----Original Message-----
> From: jfw-bounce@xxxxxxxxxxxxx [mailto:jfw-bounce@xxxxxxxxxxxxx] On Behalf
> Of Rick Harmon
> Sent: Thursday, November 27, 2008 6:54 PM
> To: jfw@xxxxxxxxxxxxx
> Subject: Re: Jaws Tandem
>
> Go listen to the FS podcast that covers it.  It specificaly stated that
> direct was for local area networks only.
>
> Rick
> ----- Original Message ----- 
> From: "E.J. Zufelt" <everett@xxxxxxxxx>
> To: <jfw@xxxxxxxxxxxxx>
> Sent: Thursday, November 27, 2008 6:46 PM
> Subject: Re: Jaws Tandem
>
>
> Good afternoon,
>
> Having not read anything about Tandum I don't assume that I actually know
> anything about the difference between Centre and Direct modes.  However, 
> in
> no way whatsoever does the term "Direct" imply a local area network.  What
> it implies is a "Direct" connection between two computers.
>
> I would assume that if "Direct" mode was called "Local" mode that it would
> imply a local IP network.
>
> I really don't understand how what works between two computers on an
> internal IP network would not work over an external IP network, with the
> exception of routing and firewall rules getting in the way.
>
> HTH,
> Everett
>
>
> ----- Original Message ----- 
> From: "Chris Hallsworth" <christopherhallsworth71@xxxxxxxxxxxxxx>
> To: <jfw@xxxxxxxxxxxxx>
> Sent: Thursday, November 27, 2008 4:24 PM
> Subject: Re: Jaws Tandem
>
>
>> As suggested, Direct is supposed to work over a local area network only,
>> hence the word direct.
>>
>> --
>> Chris Hallsworth
>> e-mail: christopherhallsworth71@xxxxxxxxxxxxxx
>> MSN: ch9675@xxxxxxxxxxx
>> skype: chrishallsworth7266
>> klango: chrishallsworth
>> ----- Original Message ----- 
>> From: "E.J. Zufelt" <everett@xxxxxxxxx>
>> To: <jfw@xxxxxxxxxxxxx>
>> Sent: Thursday, November 27, 2008 7:19 PM
>> Subject: Re: Jaws Tandem
>>
>>
>>> Is it possible to use direct over the Internet?
>>>
>>> Thanks,
>>> Everett
>>>
>>>
>>> ----- Original Message ----- 
>>> From: "Chris Hallsworth" <christopherhallsworth71@xxxxxxxxxxxxxx>
>>> To: <jfw@xxxxxxxxxxxxx>
>>> Sent: Thursday, November 27, 2008 12:54 PM
>>> Subject: Re: Jaws Tandem
>>>
>>>
>>>> Tandom Direct is to access a Tandom session through a local area
>>>> network. Do not use this option unless your authorization has Tandom
>>>> Direct enabled. Tandom Centre is the option to do a Tandom session over
>>>> the internet and is a separate subscription, or it will be when they
>>>> roll it out. Hope this helps.
>>>>
>>>> --
>>>> Chris Hallsworth
>>>> e-mail: christopherhallsworth71@xxxxxxxxxxxxxx
>>>> MSN: ch9675@xxxxxxxxxxx
>>>> skype: chrishallsworth7266
>>>> klango: chrishallsworth
>>>> ----- Original Message ----- 
>>>> From: "Geoff Connor" <gjconnor@xxxxxxx>
>>>> To: <jfw@xxxxxxxxxxxxx>
>>>> Sent: Thursday, November 27, 2008 5:50 PM
>>>> Subject: Jaws Tandem
>>>>
>>>>
>>>>> Good morning everyone. I currently have Jaws 10 on my computer. When 
>>>>> it
>>>>> comes to doing a tandem session, does it matter if you do it through
>>>>> the
>>>>> center sub menu or the direct submenu? Both menus are the same apart
>>>>> from
>>>>> the fact that the get access to a computer option is unavailable in 
>>>>> the
>>>>> direct sub menu. Any help would be appreciated.
>>>>>
>>>>> Cheers.
>>>>>
>>>>> Geoff
>>>>> No virus found in this outgoing message.
>>>>> Checked by AVG - http://www.avg.com
>>>>> Version: 8.0.176 / Virus Database: 270.9.10/1815 - Release Date:
>>>>> 27/11/2008
>>>>> 9:02 AM
>>>>>
>>>>>
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