Problemas de Porta [RESOLVIDO]

1. Problemas de Porta [RESOLVIDO]

Lucas Castro
LucasCastro99

(usa XUbuntu)

Enviado em 07/05/2018 - 20:04h

Olá pessoal...
estou com um problema aqui na minha empresa, é que eles decidiram instalar um servidor ftp com o vsftpd, fiz as alterações no arquivo vsftpd.conf e vsftpd.userlist, até ai tudo bem, mas do nada quando fui fazer o teste e:
ftp localhost
ftp: connect: Connection refused
ftp>

ai eu vejo as configurações de porta e:
nmap -sT -O localhost

Starting Nmap 7.01 ( https://nmap.org ) at 2018-05-07 18:48 -04
Nmap scan report for localhost (127.0.0.1)
Host is up (0.00048s latency).
Not shown: 996 closed ports
PORT STATE SERVICE
80/tcp open http
631/tcp open ipp
3306/tcp open mysql
10000/tcp open snet-sensor-mgmt
Device type: general purpose
Running: Linux 3.X|4.X
OS CPE: cpe:/o:linux:linux_kernel:3 cpe:/o:linux:linux_kernel:4
OS details: Linux 3.8 - 4.0
Network Distance: 0 hops

OS detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 4.06 seconds

já tentei liberar as portas pelo iptables e nada.
aqui está a configuração do vsftpd.conf:
# Run standalone?  vsftpd can run either from an inetd or as a standalone
# daemon started from an initscript.
listen=YES
# 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.
listen_ipv6=YES
# Allow anonymous FTP? (Disabled by default).
anonymous_enable=YES
# 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
# 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=3600
# 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=Servidor FTP do IFAM-CCO (Campus Coari).
# 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
# 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
rsa_private_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
ssl_enable=NO
# Uncomment this to indicate that vsftpd use a utf8 filesystem.
utf8_filesystem=YES

dentro do arquivo vsftpd.userlist não tem nada, mas acredito que isto não seja o problema.
espero a ajuda de vocês...


  


2. Re: Problemas de Porta [RESOLVIDO]

Marcos Piske Sendecki
DebUser

(usa Debian)

Enviado em 08/05/2018 - 09:16h

Tente o comando "ss -ntl" para verificar as portas que o servidor está escutando, se não listar a porta 21 é um problema na configuração do vsftp...
Caso liste a porta 21 tente liberar no iptables, ou poste as regras aqui para podermos ajudar


3. Re: Problemas de Porta [RESOLVIDO]

Lucas Castro
LucasCastro99

(usa XUbuntu)

Enviado em 20/05/2018 - 17:50h

LucasCastro99 escreveu:

Olá pessoal...
estou com um problema aqui na minha empresa, é que eles decidiram instalar um servidor ftp com o vsftpd, fiz as alterações no arquivo vsftpd.conf e vsftpd.userlist, até ai tudo bem, mas do nada quando fui fazer o teste e:
ftp localhost
ftp: connect: Connection refused
ftp>

ai eu vejo as configurações de porta e:
nmap -sT -O localhost

Starting Nmap 7.01 ( https://nmap.org ) at 2018-05-07 18:48 -04
Nmap scan report for localhost (127.0.0.1)
Host is up (0.00048s latency).
Not shown: 996 closed ports
PORT STATE SERVICE
80/tcp open http
631/tcp open ipp
3306/tcp open mysql
10000/tcp open snet-sensor-mgmt
Device type: general purpose
Running: Linux 3.X|4.X
OS CPE: cpe:/o:linux:linux_kernel:3 cpe:/o:linux:linux_kernel:4
OS details: Linux 3.8 - 4.0
Network Distance: 0 hops

OS detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 4.06 seconds

já tentei liberar as portas pelo iptables e nada.
aqui está a configuração do vsftpd.conf:
# Run standalone?  vsftpd can run either from an inetd or as a standalone
# daemon started from an initscript.
listen=YES
# 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.
listen_ipv6=YES
# Allow anonymous FTP? (Disabled by default).
anonymous_enable=YES
# 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
# 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=3600
# 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=Servidor FTP do IFAM-CCO (Campus Coari).
# 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
# 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
rsa_private_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
ssl_enable=NO
# Uncomment this to indicate that vsftpd use a utf8 filesystem.
utf8_filesystem=YES

dentro do arquivo vsftpd.userlist não tem nada, mas acredito que isto não seja o problema.
espero a ajuda de vocês...

Cara, desisti do vsFTPd, e fui pro proFTPd, pos tinha pouco tempo para terminar este servidor.
O proFTPd funcionou perfeitamente, sendo que levei apenas 2 horas para configurá-lo, mesmo assim, obrigado pela ajuda








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