Enabling SFTP in window plesk

[selva kumar]

I have windows vps with plesk 8.4 .
I have two questions :
1) I am facing gamblour attack in my vps frequently ,so i thought to enable SFTP ,so how can i do that ? do plesk have any options or addons to do that ?
2) I normal ftp connections where will the ftp logs stored in server , that is i want to know location of log of ftp tarnscations.

Thanks in advance ...