在 Windows 下安装 Freesshd SFTP 服务器

Switch on to Users tab. Click on 'Add' to create virtual users. Give it a name. Here you can specify how each user is authenticated whether via windows login, or Password or public key.  You can give each of them permissions to use Shell, SFTP and/or tunneling. 

Switch on to Logging tab and check "Log Events" box which is useful to debug the failure cases.

Go to  C:\Program Files\freeSSHd\Keys folder. Create a new text file and place your public key in one line removing all the comments. Save the file with exact username and without any extension. 

Now, Click on Apply and OK. Right click on Tray icon, and click on "Unload" and open desktop shortcut again, to take the changes effect . It is better to restart service (Run -> services.msc ->freesshd) as well, if you are running one. 

Now, you can connect to the SFTP server using any clients such as WinSCP, PUTTY. Note that for Publick key authentication, you have to import your private key to SFTP client.