ssh file transfering

[Ned Granic]

Hi all,

What Debian tool other than ftp should I use to transfer securely some files to web space provided to me by my isp?
Until now I used the windows ftp to manage my web space, but got warning from my isp to change my password and username immediately due to security reasons -- ones that prevent me from creating my own web server on my linux box. 

Many thanks in advance!
Ned