I asked my hosting provider if I can use internal data traffic over http between two virtual machines I run with the same provider.
The short answer was, that this is not possible and the machines can only communicate over their static public ip. But no further explanation.
Now I am not sure, if this is technically generally not possible or the reason is, that those VM's might live in two geographically separated data centers.
Can anyone explain to me, if this could work or this is not possible in general?