I am using WinSCP 5.5.5, which gives the user the choice of FTP, SFTP, SCP protocols for remote access to website files. I chose to use SFTP.
My questions (indicated in bold numbers):
1. My understanding of SSH is that it requires a tunnel be used so that passwords and data can be encrypted. SSH can also be called 'tunneling'. Correct?
2. I assume that SFTP means SSH is added to FTP. Tunneling is required for it to be called SFTP, otherwise it's just FTP. Correct?
Two things happened with WinSCP:
- I filled out SFTP session login details, and tried to login without going to "Advanced..." to enable SSH Tunnel settings. The connection went through without mention of any tunneling.
3. This confused me because I had chosen SFTP (FTP is an option of its own and comes with a separate "Advanced..."). Was I still using SFTP due to the lack of tunneling? Or is SFTP without tunneling actually FTP? Was encryption present, or does it require tunneling?
- Next, I went to "Advanced..." > Connection > Tunnel > Connect through SSH Tunnel and marked that box to enable tunneling. Then upon re-connecting, it mentions I connected through a tunnel.
4. Okay. Is enabling the tunnel required for SFTP to, in fact, be SFTP? Or am I doing something like double encryption (adding extra overhead)?
Sorry about all the interrelated questions.