Remote access from two independent Logo!

Hi there,

one more question.

Is it possible to remote acces two indepentent from each other Logo! BM (8.4)  behind the same router? 
When only one everything OK.

Thanks for the help

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Split from Use a Logo 8.4 and a Logo 8.3 at the same network project?.

Thanks a lot ixo65,

by remote I mean via internet, by port forwording,The problem is they use the same port.
about VPN, yes in the forcoming project I am preparing, there will be VPN,
but in my office , where I am working on  this, there is no.
I need the remote acces when I work from home, to download the lsc file to the LOGO and test the results in LWE site.
in the office network there is another LOGO with LWE site that works for the hvac system....

The acces for both via local network is ofcourse, OK.

If i is possible via VPN , then I will implement one at my office.

I really apreciate your help.