NetBeans 8 - FTP server refused connection - Could not parse response code

-1

I try to connect to my server via sftp but I get FTP server XY refused connection.

So I tried it again with the FTP Client FileZilla, and there it works.

This is my config:

I also tried to change the port in NetBeans to 22 which is the port used for sftp... but then I get:

"Cannot connect to server XY. (Cause: Could not parse response code. Server reply: SSH-2.0-OpenSSH-7.2p2 Ubuntu-4ubuntu2.8)"

/etc/vsftpd.conf

write_enable=YES
dirmessage_enable=YES
nopriv_user=ftpsecure
ftpd_banner=Willkommen auf dem Entwicklungsserver
ls_recurse_enable=YES
local_enable=YES
local_umask=002
chmod_enable=YES
file_open_mode=0644
anonymous_enable=NO
anon_world_readable_only=YES
syslog_enable=YES
connect_from_port_20=YES
ascii_upload_enable=YES
pam_service_name=vsftpd
listen=YES
#listen_ipv6=YES

ssl_enable=NO
rsa_cert_file=
dsa_cert_file=
#
# Limit passive ports to this range to assis firewalling
pasv_min_port=30000
pasv_max_port=30100

What am I doing wrong?

Black

Posted 2019-09-04T06:52:57.540

Reputation: 3 900

Answers

Do not confuse FTP/FTPS with SFTP – they are completely different protocols.

vsftpd is an FTP/FTPS server only.
OpenSSH, WinSSHd are SFTP servers only.
The sftp command is an SFTP client only.
FileZilla is both an FTP/FTPS client and an SFTP client.

If you used an sftp://... URL in FileZilla, that's SFTP and you probably cannot connect to it via NetBeans directly, as it only supports FTP/FTPS.

user1686

Posted 2019-09-04T06:52:57.540

Reputation: 283 655

But why does it work in FileZilla and not in NetBeans? – Black – 2019-09-04T07:05:02.667

Because FileZilla does both SFTP and FTPS. What config do you use in FileZilla? – user1686 – 2019-09-04T07:05:39.783

I did not setup any config, everything is in default. I just connect with sftp://<<ip>> – Black – 2019-09-04T07:07:07.760

Right, so you're telling FileZilla to use SFTP, but you're telling NetBeans to use FTP. Those are different things. – user1686 – 2019-09-04T07:08:39.617

Then how can I tell NetBeans to use SFTP? – Black – 2019-09-04T07:10:02.217

Look under the "Encryption:" dropdown. If it has SFTP, select it. If it doesn't, that means you cannot use SFTP in NetBeans. (Try this plugin.)

– user1686 – 2019-09-04T07:10:52.027

Thats wrong, I can change the port to 22, which is the port used for sftp... but then I get another error: "Cannot connect to server XY. (Cause: Could not parse response code. Server reply: SSH-2.0-OpenSSH-7.2p2 Ubuntu-4ubuntu2.8) – Black – 2019-09-04T07:12:58.773

You're just changing the port number – that doesn't magically teach NetBeans to speak the protocol. That's what the error is saying: NetBeans doesn't understand what the SSH/SFTP server is sending, because NetBeans is expecting the server to be FTP, not SFTP. – user1686 – 2019-09-04T07:17:55.600

I have other servers which I am connecting to via sftp successfully, so NetBeans does understand sftp. It even added the tag [SFTP] to the connection name. – Black – 2019-09-04T07:24:03.943

I solved it by adding a new connection which gave me the option to select FTP or SFTP.

Now after selecting SFTP and configuring the connection again, it works.

Black

Posted 2019-09-04T06:52:57.540

Reputation: 3 900