[rdiff-backup-users] How to use rdiff through a ssh tunnel ?

[thierry]

Hi,
i just discover rdiff-backup this morning, and i would like to know, how
can i use rdiff-backup through an ssh tunnel ?
at this moment, when i want to be connected to my remote server, i do
the following command:

ssh -C -2 -N -L <port_number>:<server_ip:22> -f -l user <domain_name>
after it ask me for my passphrase and after all of that i do:

ssh -p <port_number> localhost ... and i am connecting in.

What should i do with rdiff ?

Thx

-- 
Thierry 
"un barbu c'est un barbu, mais trois barbus c'est des barbouzes"