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Is it possible to connect two private ethereum nodes that are connected to different internet service providers? I have tried and successfully connected the nodes over same network and it works.

How to connect two nodes that are not using same network, what IP do I need to replace after enode ?

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You would need the public IP for a start. But your main issue may in fact be the port to connect to.

I assume that both your nodes are behind their own NATs. Can you forward a port (say XX) from the router to the port 30303 of your nodes? Then when you have the admin.nodeInfo.enode, you replace the port 30303 with XX, and [::] with the public IP address. Then do admin.addPeer(ENODE) on the other machine.

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  • Can you please elaborate, unable to figure how to forward a port from the router. Can you help me with a step by step account of things to be done.
    – user2607
    Sep 12, 2016 at 10:45
  • Step by step depends on your router model, supposing you are at home or in office: wikihow.com/Set-Up-Port-Forwarding-on-a-Router. Alternatively, you would put your node on a cloud-service computer, which typically let you attach a public IP to the computer itself.
    – Xavier Leprêtre B9lab
    Sep 12, 2016 at 11:17

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