How to restrict access to our server!

Hi all,

Simple question (least I think!), I have vsftpd running on a fedora server and I roughly know enough to set it up and get it going but have found out now in Internet Explorer 7, if you browse it and log in successfully, you see a list of all the folders on the system:

02/11/2008 05:01AM      Directory bin
06/15/2007 12:00AM      Directory boot
01/04/2008 09:20AM      Directory dev
02/11/2008 05:01AM      Directory etc
07/17/2007 12:00AM      Directory home
02/11/2008 05:01AM      Directory lib
06/15/2007 12:00AM      Directory lost+found
06/15/2007 12:00AM      Directory media
01/04/2008 09:20AM      Directory misc
04/17/2007 12:00AM      Directory mnt
01/04/2008 09:20AM      Directory net
04/17/2007 12:00AM      Directory opt
01/04/2008 09:19AM      Directory proc

And if you click the links, you can actually download the files!!

How can i stop this from happening? Is it a setting in the smb.conf file?

Thanks in advance
Steve
stevemarsh99Asked:
Who is Participating?
 
omarfaridConnect With a Mentor Commented:
You need to look into /etc/vsftpd.conf for the below parameters and set them if not set:

anonymous_enable=YES
chroot_list_enable=YES
0
 
michofreihaCommented:
The web browser is not asking for a username and password?
0
 
stevemarsh99Author Commented:
Thank you very much. Fast and accurate.
0
Never miss a deadline with monday.com

The revolutionary project management tool is here!   Plan visually with a single glance and make sure your projects get done.

 
stevemarsh99Author Commented:
Hold on....when I have made these two changes, you are no longer given the option to enter a username a password.  (in IE7) it logs you straight in and you can only see PUB entry.  And through windows explorer you are now unable to log in as anyone :(
0
 
omarfaridCommented:
You may change

anonymous_enable=NO
0
 
stevemarsh99Author Commented:
i have changed that and you still couldnt log in
0
 
omarfaridCommented:
Did you restart vsftpd?
0
 
stevemarsh99Author Commented:
Yes
0
 
omarfaridCommented:
If you remove both entries, does it solve your problem?
0
 
stevemarsh99Author Commented:
If I change anoymous access back to NO (how it was) and comment out the CHROOT one, it works but I still have the original problem
0
 
stevemarsh99Author Commented:
Anything?
0
 
omarfaridCommented:
I am trying to download vsftpd to my system and see how to do it.

Let me be clear about your requirement. You want to:

- Allow ftp with user name and password only (no quest login)
- Allow the user to browse but not download
- Strict the user to home dir
0
 
stevemarsh99Author Commented:
Sorry maybe I was not as clear as I should have been.

My situation is this....currenty, when people log in to our server through WINDOWS explorer they get prompted with a username and password.  They authenticate and they see the folders they are supposed to.  Great.  But if they use INTERNET explorer they are prompted with a username and password to which they fill in correctly, they login and then see a list of folders in the C:\.  If they are curious, they click on the links and they are able to browse freely into other peoples directories and see/download the content in these folders!

I am simply trying to stop this scenerio from happening in internet explorer.  Also if you log in successfully in firefox, you see the correct folders, but there is a link to "Go up a directory", if you keep clicking you can get to the root of C:\ again.

I just want to stop people seeing anything other than their area.

Thanks for you time so far.
0
 
stevemarsh99Author Commented:
Sorry, I forgot to show you what they see in IE7 if they log in successfully:

02/11/2008 05:01AM      Directory bin
06/15/2007 12:00AM      Directory boot
01/04/2008 09:20AM      Directory dev
02/11/2008 05:01AM      Directory etc
07/17/2007 12:00AM      Directory home
02/11/2008 05:01AM      Directory lib
06/15/2007 12:00AM      Directory lost+found
06/15/2007 12:00AM      Directory media
01/04/2008 09:20AM      Directory misc
04/17/2007 12:00AM      Directory mnt
01/04/2008 09:20AM      Directory net
04/17/2007 12:00AM      Directory opt
01/04/2008 09:19AM      Directory proc
02/11/2008 02:50PM      Directory root
02/11/2008 05:01AM      Directory sbin
06/15/2007 12:00AM      Directory selinux
06/15/2007 12:00AM      Directory srv
01/04/2008 09:19AM      Directory sys
02/11/2008 02:52PM      Directory tmp
06/20/2007 12:00AM      Directory usr
06/15/2007 12:00AM      Directory var

0
 
omarfaridCommented:
I tried the following option and it is working:

chroot_local_user=YES
0
 
stevemarsh99Author Commented:
Right, this is my actual vsftpd.conf file, please look and suggest:

# 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.
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
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=500
#
# 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=KHL 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().
chroot_list_enable=NO
# (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 whith two configuration files.
# Make sure, that one of the listen options is commented !!
#listen_ipv6=YES

hide_file={*.bash_logout,.bash_profile,.bashrd}

pam_service_name=vsftpd
userlist_enable=YES
tcp_wrappers=YES

#pasv_enable=YES
#pasv_promiscuous=NO
#port_enable=NO
#port_promiscuous=NO
pasv_max_port=65534
pasv_min_port=49152

pasv_address=195.11.216.182
0
 
omarfaridCommented:
Sorry, but I was away from my computer for the whole day.

I checked you conf file and here my comments:

- the option below is not added to your conf file to stop browsing others directories

chroot_local_user=YES

- the option below is not known to me, you may comment (by adding # before the option)

userlist_enable=YES

- the option below may be commented  (by adding # before the option)

chroot_list_enable=NO

- if you do noy want to allow guest / anonymous ftp login then change

anonymous_enable=YES

to

anonymous_enable=NO

Why do you keep referring to C:\ in your postings? Are you running vsftpd on Linux or Windows?
0
All Courses

From novice to tech pro — start learning today.