If you want to transfer files from Windows to Linux machines you can use the pscp utility. Other related utilities can be found on this page . Here you will also find the putty utility that can be used to login to Linux machines and create ssh tunnels.
I suggest using FileZilla or WinSCP for file transfers. Filezilla can also manage FTP connexions, while WinSCP can’t but supports ssh key authentification.
They are both graphical clients.
ugob.