Proftpd não funciona em outra Porta

williansaldanha
(usa Outra)

Enviado em 07/03/2016 - 14:22h

Olá galera, tenho um Linux LTS 12.04, e configurei nele um servidor FTP. Na minha rede interna, ele funciona em qualquer porta que eu definir lá no arquivo proftpd.conf, porém fora percebo que ele funciona somente na porta 21[b], se eu colocar 2121, por exemplo, configurar o NAT no modem fazendo o redirecionamento da porta pro IP do server, ele acha, pede login e senha mais não loga... Retorna o seguinte erro [b]“Erro ao abrir esta pasta no servidor FTP. Certifique-se de que você tem permissão para acessar a pasta... Detalhes: 200 type set to A... 227 Entering Passive Mode (192,168,1,2,194,56)." Fiz uma pesquisa e vi que a OI tem uma restrição na porta 21 pra linhas residenciais, por isso a mudança na porta! Estou usando o seguinte script no proftpd.conf

# /etc/proftpd/proftpd.conf -- This is a basic ProFTPD configuration file.
# To really apply changes, reload proftpd after modifications, if
# it runs in daemon mode. It is not required in inetd/xinetd mode.
#

# Includes DSO modules
Include /etc/proftpd/modules.conf

# Set off to disable IPv6 support which is annoying on IPv4 only boxes.
UseIPv6 on
# If set on you can experience a longer connection delay in many cases.
IdentLookups off

ServerName "NomeDoServidorFTP"
ServerType standalone
DeferWelcome off

MultilineRFC2228 on
DefaultServer on
ShowSymlinks on
DefaultRoot ~
ServerIdent on
TimeoutNoTransfer 600
TimeoutStalled 600
TimeoutIdle 1200

#ServerAdmin email@email.com.br
DisplayLogin welcome.msg
DisplayChdir .message true
ListOptions "-l"

DenyFilter \*.*/

# Use this to jail all users in their homes
# DefaultRoot ~

# Users require a valid shell listed in /etc/shells to login.
# Use this directive to release that constrain.
RequireValidShell off

# Port 21 is the standard FTP port.
Port 2121

# In some cases you have to specify passive ports range to by-pass
# firewall limitations. Ephemeral ports can be used for that, but
# feel free to use a more narrow range.
# PassivePorts 49152 65534

# If your host was NATted, this option is useful in order to
# allow passive tranfers to work. You have to use your public
# address and opening the passive ports used on your firewall as well.
# MasqueradeAddress 1.2.3.4

# This is useful for masquerading address with dynamic IPs:
# refresh any configured MasqueradeAddress directives every 8 hours
<IfModule mod_dynmasq.c>
# DynMasqRefresh 28800
</IfModule>

# To prevent DoS attacks, set the maximum number of child processes
# to 30. If you need to allow more than 30 concurrent connections
# at once, simply increase this value. Note that this ONLY works
# in standalone mode, in inetd mode you should use an inetd server
# that allows you to limit maximum number of processes per service
# (such as xinetd)
MaxInstances 30

# Set the user and group that the server normally runs at.
#User cpd_ftp
#Group nogroup

# Umask 022 is a good standard umask to prevent new files and dirs
# (second parm) from being group and world writable.
Umask 022 022
# Normally, we want files to be overwriteable.
AllowOverwrite on

# Uncomment this if you are using NIS or LDAP via NSS to retrieve passwords:
# PersistentPasswd off

# This is required to use both PAM-based authentication and local passwords
# AuthOrder mod_auth_pam.c* mod_auth_unix.c

# Be warned: use of this directive impacts CPU average load!
# Uncomment this if you like to see progress and transfer rate with ftpwho
# in downloads. That is not needed for uploads rates.
#
# UseSendFile off

TransferLog /var/log/proftpd/xferlog
SystemLog /var/log/proftpd/proftpd.log

# Logging onto /var/log/lastlog is enabled but set to off by default
#UseLastlog on

# In order to keep log file dates consistent after chroot, use timezone info
# from /etc/localtime. If this is not set, and proftpd is configured to
# chroot (e.g. DefaultRoot or <Anonymous>), it will use the non-daylight
# savings timezone regardless of whether DST is in effect.
#SetEnv TZ :/etc/localtime

<IfModule mod_quotatab.c>
QuotaEngine off
</IfModule>

<IfModule mod_ratio.c>
Ratios off
</IfModule>


# Delay engine reduces impact of the so-called Timing Attack described in
# http://www.securityfocus.com/bid/11430/discuss
# It is on by default.
<IfModule mod_delay.c>
DelayEngine on
</IfModule>

<IfModule mod_ctrls.c>
ControlsEngine off
ControlsMaxClients 2
ControlsLog /var/log/proftpd/controls.log
ControlsInterval 5
ControlsSocket /var/run/proftpd/proftpd.sock
</IfModule>

<IfModule mod_ctrls_admin.c>
AdminControlsEngine off
</IfModule>

#
# Alternative authentication frameworks
#
#Include /etc/proftpd/ldap.conf
#Include /etc/proftpd/sql.conf

#
# This is used for FTPS connections
#
#Include /etc/proftpd/tls.conf

#
# Useful to keep VirtualHost/VirtualRoot directives separated
#
#Include /etc/proftpd/virtuals.con

# A basic anonymous configuration, no upload directories.

# <Anonymous ~ftp>
# User ftp
# Group nogroup
# # We want clients to be able to login with "anonymous" as well as "ftp"
# UserAlias anonymous ftp
# # Cosmetic changes, all files belongs to ftp user
# DirFakeUser on ftp
# DirFakeGroup on ftp
#
# RequireValidShell off
#
# # Limit the maximum number of anonymous logins
# MaxClients 10
#
# # We want 'welcome.msg' displayed at login, and '.message' displayed
# # in each newly chdired directory.
# DisplayLogin welcome.msg
# DisplayChdir .message
#
# # Limit WRITE everywhere in the anonymous chroot
# <Directory *>
# <Limit WRITE>
# DenyAll
# </Limit>
# </Directory>
#
# # Uncomment this if you're brave.
# # <Directory incoming>
# # # Umask 022 is a good standard umask to prevent new files and dirs
# # # (second parm) from being group and world writable.
# # Umask 022 022
# # <Limit READ WRITE>
# # DenyAll
# # </Limit>
# # <Limit STOR>
# # AllowAll
# # </Limit>
# # </Directory>
#
# </Anonymous>

# Include other custom configuration files
Include /etc/proftpd/conf.d/

patrickpcs
(usa Nenhuma)

Enviado em 08/03/2016 - 10:35h

A solução para o seu problema está escrita no próprio arquivo de configuração, acontece que o serviço FTP usa a porta 21 para controle (autenticação e comandos) mas usa outras portas para a transferência de fato dos arquivos (entenda que a simples leitura de pastas já caracteriza isso). Você deve verificar nas configurações do seu firewall a situação das portas descritas a seguir.

# In some cases you have to specify passive ports range to by-pass

# firewall limitations. Ephemeral ports can be used for that, but

# feel free to use a more narrow range.

# PassivePorts 49152 65534



# If your host was NATted, this option is useful in order to

# allow passive tranfers to work. You have to use your public

# address and opening the passive ports used on your firewall as well.

 

http://goo.gl/g6NiFp

Jer_Segundo
(usa Ubuntu)

Enviado em 10/03/2016 - 02:26h

O primeiro problema pode ser devido o modo que você está acessando. Se você estiver usando o modo passivo, a autenticação ocorrerá pela porta que você configurou, mas a transferência dos arquivos será por outra porta aleatória indicada pelo servidor. Pela sua configuração 49152 a 65534. Você terá que abrir essa faixa de portas e liberá-las também no firewall. Se você pretente acessar seus arquivos externamente não use o FTP puro por motivos de segurança. Espero ter ajudado.