Did all the steps as mentioned, but I get this message on Fillezila (mac):

Error: Disconnected: No supported authentication methods available (server sent: publickey) Error: Could not connect to server

Any idea on how I can debug this?

@fabianoarruda: Did you add your SSH key to Filezilla?

when i try to convert the keys via

"Now, we need to convert the public keys that are currently used to log into the server. If you only have one user, you can use this command:

sudo ssh-keygen -e -f ~username/.ssh/authorized_keys | sudo tee /etc/proftpd/authorized_keys/username"

i get “ssh-keygen: /home/main/.ssh/authorized_keys: No such file or directory”

I have followed all the steps mentioned but get this error. what am i doing wrong ?

@karambahosting: Add the SSH key you want to use to ~username/.ssh/authorized_keys (each one on its own line, usually starting with “ssh-rsa”) and then run that command.

Somewhat new to this but have implemented the above. What I need is to be able to create accounts that are upload only with each account pointing to one file directory only (unique). This while still having admin access through the root account to all folders. How would I go about doing this? Any direction would help me out a lot. Thanks

@Josh: <blockquote>This while still having admin access through the root account to all folders.</blockquote> root has access to everything all the time, no matter what. <blockquote>What I need is to be able to create accounts that are upload only with each account pointing to one file directory only (unique).</blockquote> Check out <a href=“https://www.digitalocean.com/community/articles/how-to-add-and-delete-users-on-ubuntu-12-04-and-centos-6”>https://www.digitalocean.com/community/articles/how-to-add-and-delete-users-on-ubuntu-12-04-and-centos-6</a>.

Hello, while filezilla is trying to connect it gives me an error: Disconnected: No supported authentication methods available (server sent: public key) why it can be? thanks

@foykes: You need to configure filezilla to use your SSH key that you configured PuTTy to use.

After this step: sudo ssh-keygen -e -f ~username/.ssh/authorized_keys | sudo tee /etc/proftpd/authorized_keys/username

I get prompted for my passphrase. Once I enter the password, I get this response: load failed

This is on a brand-new vanilla installation of ubuntu+LAMP

@magness.richard: Try the following command instead: <pre>sudo ssh-keygen -e -f /home/username/.ssh/authorized_keys | sudo tee /etc/proftpd/authorized_keys/username </pre>

hi,

service proftpd start always fails. I am running a CentOS 6.5 & ProFTPD Version is 1.3.3g. mod_sftp.c is missing from:

proftpd -l

Compiled-in modules: mod_core.c mod_xfer.c mod_auth_unix.c mod_auth_file.c mod_auth.c mod_ls.c mod_log.c mod_site.c mod_delay.c mod_facts.c mod_dso.c mod_ident.c mod_readme.c mod_auth_pam.c mod_tls.c mod_vroot.c mod_cap.c mod_ctrls.c mod_lang.c

Is this the problem? If so, how do I fix it?

Thanks!

ProFtpd starts using “/usr/sbin/proftpd” but fails using “service proftpd start”. Is there any reason for this? Here is an output from “/usr/sbin/proftpd -td10” (I have masked the server IP)

Checking syntax of configuration file

• using TCP receive buffer size of 87380 bytes
• using TCP send buffer size of 16384 bytes
• testing Unix domain socket using S_ISFIFO
• testing Unix domain socket using S_ISSOCK
• using S_ISSOCK macro for Unix domain socket detection
• mod_tls/2.4.2: using OpenSSL 1.0.1e-fips 11 Feb 2013
• retrieved UID 111 for user ‘test’
• retrieved GID 1111 for group ‘test’
• loading ‘mod_sftp.c’
• mod_sftp/0.9.7: using OpenSSL 1.0.1e-fips 11 Feb 2013
• loading ‘mod_sftp_pam.c’
• <IfModule>: using ‘mod_sftp.c’ section at line 175
• <IfDefine>: skipping ‘TLS’ section at line 191
• <IfDefine>: skipping ‘DYNAMIC_BAN_LISTS’ section at line 208
• <IfDefine>: skipping ‘ANONYMOUS_FTP’ section at line 241
• UseReverseDNS off, returning IP address instead of DNS name xx.xx.xxx.xxx - xx.xx.xxx.xxx - Config for xx.xx.xxx.xxx: xx.xx.xxx.xxx - ServerIdent xx.xx.xxx.xxx - DefaultServer xx.xx.xxx.xxx - VRootEngine xx.xx.xxx.xxx - DefaultRoot xx.xx.xxx.xxx - VRootAlias xx.xx.xxx.xxx - AuthPAMConfig xx.xx.xxx.xxx - AuthOrder xx.xx.xxx.xxx - UserID xx.xx.xxx.xxx - UserName xx.xx.xxx.xxx - GroupID xx.xx.xxx.xxx - GroupName xx.xx.xxx.xxx - UseSendfile xx.xx.xxx.xxx - SFTPEngine xx.xx.xxx.xxx - SFTPLog xx.xx.xxx.xxx - SFTPHostKey xx.xx.xxx.xxx - SFTPHostKey xx.xx.xxx.xxx - SFTPAuthMethods xx.xx.xxx.xxx - SFTPAuthorizedUserKeys xx.xx.xxx.xxx - SFTPCompression xx.xx.xxx.xxx - Limit xx.xx.xxx.xxx - AllowAll xx.xx.xxx.xxx - Umask xx.xx.xxx.xxx - AllowOverwrite xx.xx.xxx.xxx - ROOT PRIVS at mod_delay.c:354 xx.xx.xxx.xxx - RELINQUISH PRIVS at mod_delay.c:359 xx.xx.xxx.xxx - ROOT PRIVS at mod_ctrls.c:1139 xx.xx.xxx.xxx - RELINQUISH PRIVS at mod_ctrls.c:1141 xx.xx.xxx.xxx - mod_lang/0.9: binding to text domain ‘proftpd’ using locale path ‘/usr/share/locale’ xx.xx.xxx.xxx - mod_lang/0.9: using locale files in ‘/usr/share/locale’ xx.xx.xxx.xxx - mod_lang/0.9: added the following supported languages: ko_KR, en_US, zh_CN, fr_FR, it_IT, bg_BG, ja_JP, ru_RU, zh_TW xx.xx.xxx.xxx - ROOT PRIVS at keys.c:552 xx.xx.xxx.xxx - RELINQUISH PRIVS at keys.c:554 xx.xx.xxx.xxx - ROOT PRIVS at keys.c:552 xx.xx.xxx.xxx - RELINQUISH PRIVS at keys.c:554 Syntax check complete. xx.xx.xxx.xxx - ROOT PRIVS at mod_delay.c:1346 xx.xx.xxx.xxx - RELINQUISH PRIVS at mod_delay.c:1351 xx.xx.xxx.xxx - mod_sftp/0.9.7: scrubbing 2 passphrases from memory.

Note: ProFTPd was installed using “yum install”.

Any pointers would be a great help!

“Now, we need to convert the public keys that are currently used to log into the server. If you only have one user, you can use this command:”

There are no public keys on a server I believe if you’re doing a fresh install. Most people will have one user (root) - so I would probably elaborate on both of those issues, as if someone tries to do this with just the one account they have (root) this step will fail – care to elaborate on user creation, to circumvent users seeing a load failed trying this with root?

Thanks for the article!

@phrozen755: Check out <a href=“https://www.digitalocean.com/community/articles/how-to-set-up-ssh-keys--2”>https://www.digitalocean.com/community/articles/how-to-set-up-ssh-keys--2</a>—it’s recommended to use ssh keys instead of passwords.

@kituannjoseph: What’s the output of <pre>proftpd --configtest</pre>?

proftpd --configtest

Checking syntax of configuration file Syntax check complete.

is it possible to combine this but instead the authorized keys use mysql as backend?

I am a little confuse here

“sudo ssh-keygen -e -f ~username/.ssh/authorized_keys | sudo tee /etc/proftpd/authorized_keys/username”

I did try that but it didnt work. As I belive it is trying to find my public key file which I saved but for me I saved it in my documents folder so I did this

“sudo ssh-keygen -e -f ~kenpachi/Documents/ssh-key/my-public-key| sudo tee /etc/proftpd/authorized_keys/kenpachi”

I did that but it didn’t work Please help.

I have read the before issues with this but the answer is not very clear

I follow all this steps for 12.04, no problem. In 14.04 I followed the same steps but I can’t login:

Error: Server sent disconnect message Error: type 14 (no more auth methods available): Error: “No other authentication mechanisms available” Error: Could not connect to server

Did something changed in 14.04?

Thank you very much and if anyone have any idea please help me. Thank you again. Best Regards.

Found the solution for the problem, made a new droplet with Ubuntu 12.04 and just forgot Ubuntu 14.04.

Is this guide assuming that SSH keys have already been set-up on the server?

@infinitelink: Yes, you can set up SSH Keys by following this tutorial: How To Set Up SSH Keys.

This article is very poor and should be re-written. It needs to go much further into depth - especially after reading follow up comments, and the need to take actions prior to doing the steps in this article (like the fact that SSH keys need to be created prior)

When trying to use the “sudo ssh-keygen -e -f ~username/.ssh/authorized_keys | sudo tee /etc/proftpd/authorized_keys/username” command (using proper usernames), I’m asked for a sudo password which I enter, but the whole thing hangs after I hit enter and never completes.

Good tutorial. I also installed logrotate. Logrotate fails to restart ProFTPd:

ProFTPD is started in standalone mode, currently not running.```

 I'm forced to manually start:
```$ sudo service proftpd start```

It turns out there's [a race condition bug with ProFTPd](https://bugs.launchpad.net/ubuntu/+source/proftpd-dfsg/+bug/1246245). The solution is to edit the init file.
```sudo vi /etc/init.d/proftpd```

Approximately line 190, before:
```    if [ -f "$PIDFILE" ]; then
        start-stop-daemon --stop --signal $SIGNAL --quiet --pidfile "$PIDFILE"```


Approximately line 190, after:
```    if [ -f "$PIDFILE" ]; then
        start-stop-daemon --stop --signal $SIGNAL --retry 1 --quiet --pidfile "$PIDFILE"```

Note: I've added -- retry 1.

i always got Error: Disconnected: No supported authentication methods available (server sent: publickey) used with filezilla … So please help me … my sudo service proftpd status is working currently …

Running only sudo ssh-keygen -e -f /home/arce/.ssh/authorized_keys always get me an error: laod failed.

I trying using root (super user), sudo and it didn’t work.

It is a Debian 7.

Isn’t this all completely unnecessary?

If you already have a SSH server, an SFTP client should be able to connect to the SSH port (22 by default) just out of the box, without even installing an ftp server.

I’ve just checked on my droplet, which is a freshly installed Debian where I haven’t installed any FTP client. I can connect with Filezilla with SFTP.

when i put sudo apt-get update && sudo apt-get install proftpd it works but in the end i get fatal:failed to fork . & i don’t get any prompet to chose “standalone” . next command “sudo nano /etc/proftpd/proftpd.conf” i get blank page means file doesn’t exist because proftp hasn’t been installed successfully so what to do ?

@kamaln7 the tutorial here describes how to set up ProFTPD with a MySQL backend. Is it possible to combine these two i.e configure ProFTPD to use sftp while authenticating via MySQL backend?

when I type:“sudo ssh-keygen -e -f ~username/.ssh/authorized_keys | sudo tee /etc/proftpd/authorized_keys/username” it says:“no such file or directory” not sure if i have to make my own key and if I have to how do I do it?

I’m blocked here: ssh-keygen -e -f /root/.ssh/authorized_keys | sudo tee /etc/proftpd/authorized_keys/root it asks me to Enter passphase (which I don’t know what it is, I assume it’s my VPS SSH password) but it throws load failed error! Any clue on how to get this thing working?

Thanks!

I setup everything as described above without any issues but when I login with root user for file transfer I don’t have access to the user directories in /home/. Weird. Any ideas?

Another question… Is it possible to filter uploaded files to certain file types like .jpg, .png for specific SFTP user?

Many thanks!

Why can’t I connect via sftp to froxlor created users? After following the above steps, I did this: https://forum.froxlor.org/index.php/topic/12753-configuring-proftpd-to-act-as-sftp-server/

Why can’t I connect via sftp to froxlor clients?

if anyone have problem with multiple users, maybe this help you:

sudo ssh-keygen -e -f /path/to/id_rsa.pub | sudo tee /etc/proftpd/authorized_keys/username_who_owns_key

its:

sudo ssh-keygen -e -f /home/user_name/.ssh/authorized_keys | sudo tee /etc/proftpd/authorized_keys/username_who_owns_key

I can’t find ~/.ssh/id_rsa file, can u help me?

Normally the write-ups here are done very well. However, this one is not. Is mod_sftp enabled in the modules.conf by default? What about authenticating with PAM/Keyboard-Interactive? Why assume someone has keys on their server (I know something my be “best practice” but that is no excuse to leave out details of other configuration methods). This article is frustrating because of how good it could be, but isn’t.

I wish this could get some attention and possible get a rewrite.

I can’t… connetc with ftp.

I saw to error

root@sosyalwebia:~# sudo ssh-keygen -e -f /home/username/.ssh/authorized_keys | sudo tee /etc/proftpd/authorized_keys/username ssh-keygen: /home/username/.ssh/authorized_keys: No such file or directory

Hi,

I have followed all these steps, and they work fine. Except when I connect to sftp using port 22 I still can log in and am not jailed to that folder.

I did do the steps in “Disable SFTP Access on the SSH Port” section!

Any ideas? I am using Ubuntu Server 14.04.

Thanks

I have ssh setup correctly and Im using the key on Filezilla. Everything works just fine. But I need the user to use only the home directory. So I’ve tried to setup as you wrote and when I try to connect to 2222 I get:

Error: Server sent disconnect message Error: type 14 (no more auth methods available): Error: “No other authentication mechanisms available” Error: No se pudo conectar al servidor

Thanks

I’m getting this issue when I’m trying to connect to the server…

Status: Connecting to example.com:2222… Response: fzSftp started, protocol_version=8 Command: keyfile “~.ssh\id_rsa” Command: open “tanner@example.com” 2222 Error: Connection attempt interrupted by user

I made sure to open port 2222 just in case it was the firewall… anyone else getting this problem? I went through the steps a couple of times again to make sure I didn’t follow them wrong…

Good article, all valid for ProFTPd today. Maybe a little detail about Ubuntu Fire Wall “ufw” for open the 2222 port. Thanks for all!

Any reason this has not been updated in years?