Re: one way transmission
- From: "Ed Prochak" <ed.prochak@xxxxxxxxxxxxxxxxxx>
- Date: 8 Sep 2005 08:11:38 -0700
Jeck wrote:
> Hi all,
> I am looking for the best configuration regarding security that allows
> me to connect 2 computers with a cross cable. One of them will act as
> application proxy and the other is connected to an industrial plant.
> The proxy is connected to the LAN. What I want to do is retrive
> information from the database of the one connected to the plant and
> store it in a database installed on the proxy. The connection between
> the 2 machines has to be done with ODBC driver. I intent to install a
> software on the plant PC that periodically sends the information to the
>
> proxy. This last will store the data in its own database.
> The main point is: I do not want that the proxy can access to the plant
>
> computer in any way. Is there a method to implement that strategy? Can
> I inhibit the data flow in the direction
> proxy->plant without compromising the upload of the data in the
> direction plant->proxy with ODBC?
>
>
> Thank you for any suggestion
>
>
> Daniele
This really isn't a database question. I'm not sure where to send you.
(maybe an OS specific network newgroup like comp.linux.network??)
Here's a hardware solution:
How about a serial SIMPLEX connection rather than a network connection?
Since there's only one unidirectional line in that set up, there is
physically no way to hack into the plant PC.
You might end up doing a little more programming, likely NOT ODBC
between the sender and receiver applications. Just a simple ASCII
protocol might do.
plant PC
database
extract app proxy PC
sender app >--------------------->receiver app
upload app
proxy DB
HTH.
Ed
(if you want to email me, send to
edprochak at
netscape dot net)
.
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