Dietpi: Cannot connect by sftp to Dietpi

[TitaneBoy]

Hi Team..

I was trying to connect by sftp (with WinScp or FileZilla) to my Dietpi installed in my raspberry Pi 3 Model B. Unfortunetly, I can't connect in any way. WinSCP tells me that STFP Packet is too big and FileZilla is not able to connect to my pi.

Can you help me please ?

Thank you

[Fourdee]

@TitaneBoy

Hi,

Which software installed on RPi, Proftpd? And, does standard FTP function?

[3d-gussner]

You have to install OpenSSH instead of default Dropbear
Open 'dietpi-software' and go to SSH server and there choose OpenSSH

[TitaneBoy]

@Fourdee : Hi !

My installed sofware are:
-OpenSSH (client and server)
-Node.js
-iftop
-IPTraf
-Git Client
-Gogs
-LLMP: Lighttpd | mysql |php
-Lighttpd: webserver
-MySQL: database
-PHP : webserver
-OpenVPN: vpn server
-Rsyslog: system logging
-DietPi-Ramlog
-NextCloud
-Webmin
-PiVPN
-Python Pip

I'm able to connect to my dietpi with the windows software "puTTY" (so by SSH) but not by SFTP with WinSCP or FileZilla

@3d-gussner : As I said before, OpenSSH is already installed and I'm able to connect to DietPi with puTTY.

[Fourdee]

@TitaneBoy

Try the SCP protocol:

http://www.jscape.com/blog/scp-vs-sftp

[Fourdee]

@TitaneBoy

Strange, SFTP with WinSCP works for me straight out the box.

Please check this package is installed:

dpkg -l | grep openssh-sftp-server

Also check sftp and openssh logs (/var/log/auth.log i believe)

WinSCP tells me that STFP Packet is too big

Also, try disabling jumbo frame, if enabled on your Windows PC.

[TitaneBoy]

@Fourdee By running dpkg -l | grep openssh-sftp-server, I can see that package openssh-sftp-server is already installed...This is the output of the command:

ii openssh-sftp-server 1:6.7p1-5+deb8u3 armhf secure shell (SSH) sftp server module, for SFTP access from remote machines

Also, the jumbo frame is already disabled too. By the way, I never touched that settings...

This is what I can see in /var/log/auth.log just after I'm trying to connect with WinSCP on my pi, by sftp, for user dietpi

May 11 11:20:13 MyDietPi sshd[28003]: Accepted password for dietpi from XXX.XXX.XXX.XX port 42297 ssh2
May 11 11:20:13 MyDietPi sshd[28003]: pam_unix(sshd:session): session opened for user dietpi by (uid=0)
May 11 11:20:13 MyDietPi sudo:   dietpi : TTY=unknown ; PWD=/home/dietpi ; USER=root ; COMMAND=/DietPi/dietpi/login
May 11 11:20:13 MyDietPi sudo: pam_unix(sudo:session): session opened for user root by (uid=0)
May 11 11:20:13 MyDietPi sudo: pam_unix(sudo:session): session closed for user root
May 11 11:20:13 MyDietPi sshd[28003]: pam_unix(sshd:session): session closed for user dietpi

By trying SCP protocol, it looks to work and I can remote my dietpi.

What I have to do in order to make it work with SFTP protocol ?

Thank you for your answers

[Fourdee]

@TitaneBoy

https://winscp.net/eng/docs/message_large_packet

The above mentions text print on server, during login can be a cause, so lets check these:

cat "$HOME"/.bashrc
cat "$HOME"/.profile

Also, try disabling #/DietPi/dietpi/login from "$HOME"/.bashrc, then attempt SFTP connection again.

[TitaneBoy]

Hi @Fourdee .

By disabling #/DietPi/dietpi/login from "$HOME"/.bashrc, it looks that I can finally connect with sftp protocol with WinSCP :-)

By reading the link you provided, does it mean I have to move the /DietPi/dietpi/login command from "$HOME"/.bashrc to "$HOME"/.profile ?

Thanks again for your answer...

[Fourdee]

@TitaneBoy

By disabling #/DietPi/dietpi/login from "$HOME"/.bashrc, it looks that I can finally connect with sftp protocol with WinSCP :-)

Excellent, great to hear 👍

By reading the link you provided, does it mean I have to move the /DietPi/dietpi/login command from "$HOME"/.bashrc to "$HOME"/.profile ?

For now, yes.
However, if you can please confirm this is functional (with SFTP, DietPi login script executes ok) once moved, we'll roll this change to DietPi.

[Fourdee]

Marking as resolved. Please reopen if required.

[TitaneBoy]

Hi.. Sorry for the delay... I confirm that your given solution worked for me.. 😊

Thank you

[vvv-ca]

It seems that the login command is still in bashrc and it still causes issues with scp? Is there going to be a fix for this?
Thanks!

[Fourdee]

@vvv-ibm

Hi,

Which SSH server installed and client used?

[vvv-ca]

openssh-server 1:7.4p1-10+deb9u3
openssh-client 1:7.6p1-4
dietpi 6.4