how to set up a vpn using an imediary cloud-server

[robert rottermann]

Hi there

I would like to set up a vpn to a server I have only indirect access trough a 
server in the cloud

like so:

localhost -> imediary(cloud) -> destination

I then would like to do something like:

rsync user at destination:file.xx .

and vice versa.

can you point me to some tutorial or some such.

I can not access the destination directly, as I am using a dynamic IP. 
destination needs to know my IP beforehand to allow access.

thanks

robert