[CentOS] Problema VSFTPD

[frank8085]

ho seguito la procedura per l'installazione di VSFTPD, senza alcun genere di problemi, e pare che funzioni solo dalla macchina dove gira il processo, dalla rete locale non funziona.
non è un problema di collegamento o configurazione della rete perché ho testato HTTPD e funziona senza problemi, il firewall è disattivato quindi non so che dire.

la procedura l'ho presa da qui: http://www.unixmen.com/install-confi...erver-centos-7

[sacarde]

che dice il log?

/var/log/vsftpd.log

[frank8085]

non trovo nessun file che si chiama così e con quella estensione...trovo .conf, .target, .service....nessun .log

[sacarde]

sei sicuro di guardare in /var/log ?




p.s.
che versione di centos?

[frank8085]

come versione ho la 7
ho verificato facendo:

cat /var/log/vsftpd.log

il risultato è che non esiste, ho anche controllato in tutto il disco ma non esiste.

[gianmpu]

Che cosa restituisce il terminale del client quando lanci ftp da linea di comando?

[sacarde]

cela fai a incollare qui il file di configurazione:

/etc/vsftpd/vsftpd.conf




per vedere messaggi di errore del servizio:
systemctl status vsftpd


per vedere messaggi di errore generali:
journalctl -b



p.s.
con: netstat -anp|grep :21
dovresti vedere la porta ftp aperta

[frank8085]

rispondendo a gianmpu:
funziona, dice: connected to ..........
220 welcome to blah ftp service
rispondendo a sacarde:
questo è il contenuto di vsftpd.conf:

# Example config file /etc/vsftpd/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.
#
# Allow anonymous FTP? (Beware - allowed by default if you comment this out).
anonymous_enable=NO
#
# Uncomment this to allow local users to log in.
# When SELinux is enforcing check for SE bool ftp_home_dir
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.
# When SELinux is enforcing check for SE bool allow_ftpd_anon_write, allow_ftpd_full_access
#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
#
# Activate logging of uploads/downloads.
xferlog_enable=YES
#
# Make sure PORT transfer connections originate from port 20 (ftp-data).
connect_from_port_20=YES
#
# 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/xferlog
#
# 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 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
#
# When "listen" directive is enabled, vsftpd runs in standalone mode and
# listens on IPv4 sockets. This directive cannot be used in conjunction
# with the listen_ipv6 directive.
listen=NO
#
# This directive enables listening on IPv6 sockets. By default, listening
# on the IPv6 "any" address (::) will accept connections from both IPv6
# and IPv4 clients. It is not necessary to listen on *both* IPv4 and IPv6
# sockets. If you want that (perhaps because you want to listen on specific
# addresses) then you must run two copies of vsftpd with two configuration
# files.
# Make sure, that one of the listen options is commented !!
listen_ipv6=YES

pam_service_name=vsftpd
userlist_enable=YES
tcp_wrappers=YES
use_localtime=YES

invece lo status ottenuto con "systemctl status vsftpd" è:

vsftpd.service - Vsftpd ftp daemon
   Loaded: loaded (/usr/lib/systemd/system/vsftpd.service; enabled)
   Active: active (running) since Mon 2015-08-31 21:41:10 CEST; 37min ago
  Process: 1168 ExecStart=/usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf
(code=exited, status=0/SUCCESS)
 Main PID: 1179 (vsftpd)
   CGroup: /system.slice/vsftpd.service
           └─1179 /usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf

Aug 31 21:41:10 yuvsa systemd[1]: Starting Vsftpd ftp daemon...
Aug 31 21:41:10 yuvsa systemd[1]: Started Vsftpd ftp daemon.
Aug 31 22:04:00 yuvsa vsftpd[6125]: pam_unix(vsftpd:auth): chec...n
Aug 31 22:04:00 yuvsa vsftpd[6125]: pam_unix(vsftpd:auth): auth...2
Aug 31 22:04:13 yuvsa python[6142]: SELinux is preventing /usr/....

                                               *****  Plugin restorecon (92...
Aug 31 22:04:26 yuvsa vsftpd[6157]: pam_unix(vsftpd:auth): chec...n
Aug 31 22:04:26 yuvsa vsftpd[6157]: pam_unix(vsftpd:auth): auth...4
Aug 31 22:04:51 yuvsa vsftpd[6179]: pam_unix(vsftpd:auth): chec...n
Aug 31 22:04:51 yuvsa vsftpd[6179]: pam_unix(vsftpd:auth): auth...4
Hint: Some lines were ellipsized, use -l to show in full.

facendo il "journalctl -b", non ho visto errori
il net stat mi dice che il processo vsftpd con PID 1179 sta usando la porta 21

[gianmpu]

Se riesci a connetterti dal client, il servizio funziona.
Quando inserisci username e password, li accetta?

Inviato dal mio GT-N5100 utilizzando Tapatalk

[frank8085]

ecco cosa succede:
dal server è tutto ok, riesco a connettermi
dal qualunque altro client della rete no, dice "pagina non disponibile"

[gianmpu]

Riesci a copiare qui l'output completo che ricevi quando lanci ftp da linea di comando da un client?

Inviato dal mio GT-N5100 utilizzando Tapatalk

[sacarde]

cosa vedi dal comando:

sudo iptables -L




p.s.
per vedere i messaggi completi usa:

systemctl status -l vsftpd

[frank8085]

restituito da iptables -l:

Chain INPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     udp  --  anywhere             anywhere             udp dpt:domain
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:domain
ACCEPT     udp  --  anywhere             anywhere             udp dpt:bootps
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:bootps
LOG        all  --  anywhere             anywhere             LOG level debug prefix "BANDWIDTH_IN:"
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:http
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:ndmp
ACCEPT     all  --  anywhere             anywhere             state RELATED,ESTABLISHED
ACCEPT     icmp --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere            
ACCEPT     tcp  --  anywhere             anywhere             state NEW tcp dpt:ssh
REJECT     all  --  anywhere             anywhere             reject-with icmp-host-prohibited

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             192.168.122.0/24     ctstate RELATED,ESTABLISHED
ACCEPT     all  --  192.168.122.0/24     anywhere            
ACCEPT     all  --  anywhere             anywhere            
REJECT     all  --  anywhere             anywhere             reject-with icmp-port-unreachable
REJECT     all  --  anywhere             anywhere             reject-with icmp-port-unreachable
LOG        all  --  anywhere             anywhere             LOG level debug prefix "BANDWIDTH_OUT:"
LOG        all  --  anywhere             anywhere             LOG level debug prefix "BANDWIDTH_IN:"
REJECT     all  --  anywhere             anywhere             reject-with icmp-host-prohibited

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     udp  --  anywhere             anywhere             udp dpt:bootpc
LOG        all  --  anywhere             anywhere             LOG level debug prefix "BANDWIDTH_OUT:"

restituito da systemctl status -l vsftpd

vsftpd.service - Vsftpd ftp daemon
   Loaded: loaded (/usr/lib/systemd/system/vsftpd.service; enabled)
   Active: active (running) since Tue 2015-09-01 11:27:37 CEST; 1min 44s ago
  Process: 1177 ExecStart=/usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf (code=exited, status=0/SUCCESS)
 Main PID: 1191 (vsftpd)
   CGroup: /system.slice/vsftpd.service
           └─1191 /usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf

Sep 01 11:27:37 yuvsa systemd[1]: Started Vsftpd ftp daemon.

[sacarde]

prova a togliere il firewall con:

sudo iptables -F
sudo iptables -X

e riprova

p.s.
quale utente usi dagli altri PC ?

c'e' in /etc/ftpusers

[gianmpu]

Una domanda (forse) stupida. Il client che cerca di connettersi al server che indirizzo ha?

[frank8085]

logicamente diverso da quello del server ma fa parte comunque della stessa rete, facendo ping client>>server non ci sono problemi, infatti nel primo messaggio avevo detto che c'era httpd funzionante

[frank8085]

a quanto pare è il firewall il problema, all'inizio non riuscivo spiegarmi come da disattivato potesse interferire, l 'ho attivato e per un certo periodo ha accettato la richiesta ftp , poi ha smesso di funzionare .
ora l'ho disabilitato con:

systemctl stop firewalld

poi

systemctl disable firewalld

e senza firewall finalmente funziona, allora non mi resta che capire come impostare il firewall in modo che non mi blocchi mariadb, httpd, e vsftpd

[frank8085]

...