Server FTP su ubuntu

[angus]

Allora, guarda: io ho debian, non ho ubuntu. Ho fatto così:
1. apt-get install vsftpd
2. editato la configurazione mettendo listen=YES (nessuna altra modifica)
3. avviato il server
4. connesso con mio utente usando la mia password di sistema.

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mac@cowboy:~$ ftp localhost
Connected to localhost.
220 (vsFTPd 3.0.3)
Name (localhost:mac): mac
331 Please specify the password.
Password:
230 Login successful.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> ls
200 PORT command successful. Consider using PASV.
150 Here comes the directory listing.
...segue elenco file...

[posta10100]

Non saprei... appena ho un momento proverò ad installare il server sul PC "vero" con le stesse impostazioni così vediamo che succede...

Intanto grazie!

[posta10100]

Ho reinstallato il server sul PC e dando

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ftp localhost

funziona correttamente.
Se passo da fuori usando l'IP pubblico al posto di localhost riesco a fare il login ma poi si rompe:

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ftp> ls
500 Illegal PORT command.
ftp: bind: Address already in use


Ho già provato a settare le porte nel file di configurazione

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pasv_enable=Yes
pasv_max_port=10100
pasv_min_port=10090

e ho impostato il router per il forwarding al posto giusto.
Devo aprire qualche altra porta?

[posta10100]

Con questo file di configurazione il PC funziona correttamente:

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# Example config file /etc/vsftpd.conf
#
# The default compiled in settings are fairly paranoid. This sample file
# loosens things up a bit, to make the ftp daemon more usable.
# Please see vsftpd.conf.5 for all compiled in defaults.
#
# READ THIS: This example file is NOT an exhaustive list of vsftpd options.
# Please read the vsftpd.conf.5 manual page to get a full idea of vsftpd's
# capabilities.
#
#
# Run standalone?  vsftpd can run either from an inetd or as a standalone
# daemon started from an initscript.
listen=YES
#
# Run standalone with IPv6?
# Like the listen parameter, except vsftpd will listen on an IPv6 socket
# instead of an IPv4 one. This parameter and the listen parameter are mutually
# exclusive.
#listen_ipv6=YES
#
# Allow anonymous FTP? (Disabled by default)
anonymous_enable=NO
#
# Uncomment this to allow local users to log in.
local_enable=YES
#
# Uncomment this to enable any form of FTP write command.
write_enable=YES
#
# Default umask for local users is 077. You may wish to change this to 022,
# if your users expect that (022 is used by most other ftpd's)
#local_umask=022
#
# Uncomment this to allow the anonymous FTP user to upload files. This only
# has an effect if the above global write enable is activated. Also, you will
# obviously need to create a directory writable by the FTP user.
#anon_upload_enable=YES
#
# Uncomment this if you want the anonymous FTP user to be able to create
# new directories.
#anon_mkdir_write_enable=YES
#
# Activate directory messages - messages given to remote users when they
# go into a certain directory.
dirmessage_enable=YES
#
# If enabled, vsftpd will display directory listings with the time
# in  your  local  time  zone.  The default is to display GMT. The
# times returned by the MDTM FTP command are also affected by this
# option.
use_localtime=YES
#
# Activate logging of uploads/downloads.
xferlog_enable=YES
#
# Make sure PORT transfer connections originate from port 20 (ftp-data).
#connect_from_port_20=YES
connect_from_port_20=NO
#
# If you want, you can arrange for uploaded anonymous files to be owned by
# a different user. Note! Using "root" for uploaded files is not
# recommended!
#chown_uploads=YES
#chown_username=whoever
#
# You may override where the log file goes if you like. The default is shown
# below.
#xferlog_file=/var/log/vsftpd.log
#
# If you want, you can have your log file in standard ftpd xferlog format.
# Note that the default log file location is /var/log/xferlog in this case.
#xferlog_std_format=YES
#
# You may change the default value for timing out an idle session.
#idle_session_timeout=600
#
# You may change the default value for timing out a data connection.
#data_connection_timeout=120
#
# It is recommended that you define on your system a unique user which the
# ftp server can use as a totally isolated and unprivileged user.
#nopriv_user=ftpsecure
#
# Enable this and the server will recognise asynchronous ABOR requests. Not
# recommended for security (the code is non-trivial). Not enabling it,
# however, may confuse older FTP clients.
#async_abor_enable=YES
#
# By default the server will pretend to allow ASCII mode but in fact ignore
# the request. Turn on the below options to have the server actually do ASCII
# mangling on files when in ASCII mode.
# Beware that on some FTP servers, ASCII support allows a denial of service
# attack (DoS) via the command "SIZE /big/file" in ASCII mode. vsftpd
# predicted this attack and has always been safe, reporting the size of the
# raw file.
# ASCII mangling is a horrible feature of the protocol.
#ascii_upload_enable=YES
#ascii_download_enable=YES
#
# You may fully customise the login banner string:
#ftpd_banner=Welcome to blah FTP service.
#
# You may specify a file of disallowed anonymous e-mail addresses. Apparently
# useful for combatting certain DoS attacks.
#deny_email_enable=YES
# (default follows)
#banned_email_file=/etc/vsftpd.banned_emails
#
# You may restrict local users to their home directories.  See the FAQ for
# the possible risks in this before using chroot_local_user or
# chroot_list_enable below.
#chroot_local_user=YES
#
# You may specify an explicit list of local users to chroot() to their home
# directory. If chroot_local_user is YES, then this list becomes a list of
# users to NOT chroot().
# (Warning! chroot'ing can be very dangerous. If using chroot, make sure that
# the user does not have write access to the top level directory within the
# chroot)
#chroot_local_user=YES
#chroot_list_enable=YES
# (default follows)
#chroot_list_file=/etc/vsftpd.chroot_list
#
# You may activate the "-R" option to the builtin ls. This is disabled by
# default to avoid remote users being able to cause excessive I/O on large
# sites. However, some broken FTP clients such as "ncftp" and "mirror" assume
# the presence of the "-R" option, so there is a strong case for enabling it.
#ls_recurse_enable=YES
#
# Customization
#
# Some of vsftpd's settings don't fit the filesystem layout by
# default.
#
# This option should be the name of a directory which is empty.  Also, the
# directory should not be writable by the ftp user. This directory is used
# as a secure chroot() jail at times vsftpd does not require filesystem
# access.
secure_chroot_dir=/var/run/vsftpd/empty
#
# This string is the name of the PAM service vsftpd will use.
pam_service_name=vsftpd
#
# This option specifies the location of the RSA certificate to use for SSL
# encrypted connections.
rsa_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
# This option specifies the location of the RSA key to use for SSL
# encrypted connections.
rsa_private_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
#
#
pasv_enable=Yes
pasv_max_port=10100
pasv_min_port=10090
pasv_promiscuous=YES

il miniPC non ne vuole sapere:

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pftp -d localhost
Connected to localhost.
220 (vsFTPd 2.2.2)
ftp: setsockopt: Bad file descriptor
Name (localhost:luca):
---> USER luca
331 Please specify the password.
Password:
---> PASS XXXX
230 Login successful.
---> SYST
215 UNIX Type: L8
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> ls
ftp: setsockopt (ignored): Permission denied
---> PASV
500 OOPS: socket
Passive mode refused.


Il miniPC ora è connesso alla stessa rete del PC fisso, unica differenza, è connesso in wifi.

[posta10100]

Sto facendo reverse engineering del software e ho trovato che

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int retval = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);

ritorna l'errore 13, "Permission denied".

Ora devo capire perché... se nel frattempo qualcuno ha qualche idea...

[posta10100]

RISOLTO!

I due sistemi che avevo installato (Lubuntu 12.04 prima e Ubuntu 12.04 poi) per un motivo a me non chiaro non mi consentivano l'accesso.
Ho installato quindi una versione debian senza gui, configurata la rete e installato vsftpd: 20 minuti e il server FTP funziona egregiamente!

[angus]

I due sistemi che avevo installato (Lubuntu 12.04 prima e Ubuntu 12.04 poi) per un motivo a me non chiaro non mi consentivano l'accesso.

Ho installato quindi una versione debian senza gui, configurata la rete e installato vsftpd: 20 minuti e il server FTP funziona egregiamente!

Bene!
Se hai bisogno della gui la puoi installare in un attimo e non influisce minimamente con il server ftp.
ciao

[posta10100]

Se hai bisogno della gui la puoi installare in un attimo e non influisce minimamente con il server ftp.

Non da fastidio a ftp ma fa fare del lavoro extra al miniPC che già ha caldo così...

Grazie per i consigli, mi hanno aiutato a trovare la soluzione