SSH.NET - No suitable authentication method found

Question

This is my code using SSH.NET

using (var sftp = new SftpClient(host, username, password))
{                
    sftp.Connect();  
}

It works on a SFTP I installed on my local computer but when I point it at a real SFTP server from a client I get a Renci.SshNet.Common.SshAuthenticationException: No suitable authentication method found to complete authentication.

I cannot find any documentation on what authentication methods I should be using and on File Zilla a simple user name and password is doing the trick.

Can anyone please advise?

Answer 1

I found the answer (at least for my problem, which seems to be the same as the op requested):

I had to change the Authentication to KeyboardInteractiveAuthenticationMethod

So this works now:

KeyboardInteractiveAuthenticationMethod keybAuth = new KeyboardInteractiveAuthenticationMethod(SFTP_USR);
keybAuth.AuthenticationPrompt += new EventHandler<AuthenticationPromptEventArgs>(HandleKeyEvent);

ConnectionInfo conInfo = new ConnectionInfo(SFTP_HST, SFTP_PRT, SFTP_USR, keybAuth);

using (SftpClient sftp = new SftpClient(conInfo))
{
    sftp.Connect();

    // Do SFTP Stuff, Upload, Download,...

    sftp.Disconnect();
}

HandleKeyEvent then passes the Password:

private void HandleKeyEvent(object sender, AuthenticationPromptEventArgs e)
{ 
    foreach (AuthenticationPrompt prompt in e.Prompts)
    {
        if (prompt.Request.IndexOf("Password:", StringComparison.InvariantCultureIgnoreCase) != -1)
        {
            prompt.Response = SFTP_PWD;
        }
    }
}

Answer 2

Ok so the answer to my problem is that it wasn't an sftp server. It was a simple ftp server so i just used a webrequest.

Check the server is actually an sftp server first.