short answer --> YESdoes this mean something like Bitvise an SSH client, that I started to use occasionally to upload and download files, cant be used?
short answer --> YES
Bitvise is a "Tunneler"
Wrong! Bitvise is a SSH/Telnet client
from --> [ https://www.bitvise.com/ ]so this shouldnt affect your connection to the site
Bitvise SSH Server is ideal for remote administration of Windows servers; for advanced users who wish to access their home machine from work, or their work machine from home; as well as for a wide spectrum of advanced tasks, such as establishing a VPN using the SSH TCP/IP tunneling feature*, or providing a secure file depository using SFTP.
* - bold by meOur free and flexible SSH Client for Windows includes state of the art terminal emulation, graphical as well as command-lineSFTP support, an FTP-to-SFTP bridge, powerful tunneling features* including dynamic port forwarding through integrated proxy, and remote administration for our SSH Server.