Guys, thanks for your concern! :)
In fact, my objective is to write files to a remote location,
since i have only 4Mb capacity in my box.
So, i have to choose between samba or ftp. (my first choice is ftp)
(i won't use samba unless it is really my last option)
When you working in the router and run applications,
sometimes applications needs to write files to the filesystem,
and these file can become quickly bigger than 4Mb…
that's why i need to mount a remote directory into my filesystem,
this way the app running in the router (command line app)
can write to the "remote mounted" directory, not even knowing it is remote.
I don't copy the files to that remote server myself, i mean manually.
the files are dumped by the command line application.
root@mac:/tmp/home/root# application -w /directory/file.log
In the above example, the "application" is launched and is dumping its log
to the file at '/directory/file.log'
(using the '-w' argument) and because of the router limited memory capacity,
i need that directory to be remote.