I would like to tunnel my ssh port with ssh to be able to mount ist.

I use the command

ssh -X -L 139:localhost:139 user@myserver

which works fine.
When I uses nmap I see port 139 opened local.

But mounting doesn't work.

I use this command:

mount.cifs //localhost/data /mnt -ouser=myuser,ip=127.0.0.1

Then I get the message "Host is down".

Any suggestions?