FTP Virtual Users Upload / passive mode

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FTP Virtual Users Upload / passive mode

Postby enarik » Wed Jan 16, 2013 11:19 am

Hello!

I, at first, was having issues uploading to any directory, now I cannot actually get past passive mode. it fails to list the directory.

Response: 227 Entering Passive Mode (my ip,xx,xx).
Command: LIST
Error: Connection timed out
Error: Failed to retrieve directory listing

vsftpd.conf
$this->bbcode_second_pass_code('', '# 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.
#
# Allow anonymous FTP? (Beware - allowed by default if you comment this out).
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
#
# 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=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=YES
#
# This directive enables listening on IPv6 sockets. To listen on IPv4 and IPv6
# sockets, 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=ftp
guest_enable=YES
guest_username=virtual
virtual_use_local_privs=YES
listen_port=60021
pasv_address=my.external.ip.xx.')

Ports 20-21 and 60021 are forwarded on my router to the correct address. I believe that it has something to do with passive mode, so that is why I added the pasv_address to my external ip, which helped, but still doesn't solve the connectivity issue.

Any help is greatly appreciated!

Thanks.
enarik
 
Posts: 5
Joined: Fri Jan 11, 2013 1:34 pm

Re: FTP Virtual Users Upload / passive mode

Postby moonman » Wed Jan 16, 2013 1:03 pm

passive mode is when FTP server listens for control connection and does not esteblish it to the client itself so you need specify what port range you want to use for passive connections and forward these ports on your router.

A quick glance at config options:
add this to the config:

pasv_max_port=15020
pasv_min_port=15000

and forward range 15000-15020 to the plug in your router.
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moonman
Developer
 
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Joined: Sat Jan 15, 2011 3:36 am

Re: FTP Virtual Users Upload / passive mode

Postby enarik » Wed Jan 16, 2013 2:14 pm

Moonman, Thank you so much! Fixed and running perfectly now. Except for being able to upload.

Thank you for the explanation as well.
enarik
 
Posts: 5
Joined: Fri Jan 11, 2013 1:34 pm

Re: FTP Virtual Users Upload / passive mode

Postby enarik » Wed Jan 16, 2013 7:44 pm

Fixed the upload bit.

chmod 755 /srv/ftp and added allow_writeable_chroot=YES to vsftpd.conf

Can anyone tell me if this was a good idea or bad idea?

Thanks!
enarik
 
Posts: 5
Joined: Fri Jan 11, 2013 1:34 pm


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