How to control an Ubuntu PC from another Ubuntu PC over Internet?

Posted by Naveen on Ask Ubuntu See other posts from Ask Ubuntu or by Naveen
Published on 2012-10-20T09:07:15Z Indexed on 2012/10/24 5:27 UTC
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Filed under:

networking

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remote-desktop

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vnc

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remmina

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ip

There are two Ubuntu PCs called A and B.
A and B are connected to the Internet using two separated Internet connections. (In my case, two mobile broadband connections ppp0 x2 )
Each connection has a unique & static public IP address.

What I need is to control A computer's cursor, using B computer's mouse, over the Internet.

In both computers, I have allowed other users to control my computer in Desktop Sharing preferences, as below:
When I try to connect to A from the B using Remmina Remote Desktop Client, it refuses to connect after trying for a while.
These are my settings:

I expect this to be done from an available open source software, not from TeamViewer.

I found this guide harder to understand.
Please provide me clear instructions...

Thanks for having a look!

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