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Old 11-29-2012, 12:12 PM   #16
riahc3
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Posts: 97

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Quote:
Originally Posted by markush View Post
Well, how did you configure FTP?

Markus
I imagine you ask me for this:

# 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.
#
#
# Run standalone? vsftpd can run either from an inetd or as a standalone
# daemon started from an initscript.
listen=YES
#
# Run standalone with IPv6?
# Like the listen parameter, except vsftpd will listen on an IPv6 socket
# instead of an IPv4 one. This parameter and the listen parameter are mutually
# exclusive.
#listen_ipv6=YES
#
# 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
#
# 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=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=FTPTrans
#
# 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
#
# Customization
#
# Some of vsftpd's settings don't fit the filesystem layout by
# default.
#
# 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/private/vsftpd.pem
userlist_enable=YES
tcp_wrappers=YES
anon_upload_enable=NO
anon_mkdir_write_enable=NO
anon_other_write_enable=NO
local_enable=YES
local_root=/dev
ftp_username=ftpuserspecial
#max_per_ip=
 
Old 11-29-2012, 12:19 PM   #17
markush
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Registered: Apr 2007
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Well, then port 20 should be open, you can check with
Code:
nmap -p 20 xxx.xxx.xxx.xxx
where xxx.xxx.xxx.xxx is the ip-adress of your computer if the port is really open, i.e. if vsftp really listens on port 20

Markus
 
Old 11-29-2012, 12:26 PM   #18
riahc3
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Registered: Dec 2002
Posts: 97

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Quote:
Originally Posted by markush View Post
Well, then port 20 should be open, you can check with
Code:
nmap -p 20 xxx.xxx.xxx.xxx
where xxx.xxx.xxx.xxx is the ip-adress of your computer if the port is really open, i.e. if vsftp really listens on port 20

Markus
.....what the?

What does this have to do with the user having access to only one folder?
 
Old 11-29-2012, 12:27 PM   #19
kathirvel
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Registered: Jan 2011
Location: Bangalore
Distribution: RHEL,OEL
Posts: 51

Rep: Reputation: 0
Hi,

As I understand in this thread,ACL permission will help you.I will mention steps.

Check This.

1.Run getfacl command as I mentioned below.

[root@test ~]# getfacl /kathir/
getfacl: Removing leading '/' from absolute path names
# file: kathir
# owner: root
# group: root
user::rwx
group::r-x
other::r-x


2.set user permission for particular folder by setfacl command.

[root@test ~]# setfacl -m u:user1:rw /kathir


3.check again you will get permission which you set.
[root@test ~]# getfacl /kathir/
getfacl: Removing leading '/' from absolute path names
# file: kathir
# owner: root
# group: root
user::rwx
user:user1:rw-
group::r-x


I hope this will helpful.

Regards,
Kathirvel.S
 
Old 11-30-2012, 10:58 AM   #20
riahc3
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Registered: Dec 2002
Posts: 97

Original Poster
Rep: Reputation: 1
Quote:
Originally Posted by kathirvel View Post
Hi,

As I understand in this thread,ACL permission will help you.I will mention steps.

Check This.

1.Run getfacl command as I mentioned below.

[root@test ~]# getfacl /kathir/
getfacl: Removing leading '/' from absolute path names
# file: kathir
# owner: root
# group: root
user::rwx
group::r-x
other::r-x


2.set user permission for particular folder by setfacl command.

[root@test ~]# setfacl -m u:user1:rw /kathir


3.check again you will get permission which you set.
[root@test ~]# getfacl /kathir/
getfacl: Removing leading '/' from absolute path names
# file: kathir
# owner: root
# group: root
user::rwx
user:user1:rw-
group::r-x


I hope this will helpful.

Regards,
Kathirvel.S
Looks intresting.

In my case, I would have to first remove all permissions from / and its directories and only give it permission to see/write/read /dev correct?

How do I remove all permissions?
 
Old 12-01-2012, 02:00 AM   #21
kathirvel
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Registered: Jan 2011
Location: Bangalore
Distribution: RHEL,OEL
Posts: 51

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Hi,

Can you give me exact username which you use for ftp to login.

Regards,
Kathirvel.S
 
Old 12-04-2012, 12:14 PM   #22
riahc3
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Registered: Dec 2002
Posts: 97

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Quote:
Originally Posted by kathirvel View Post
Hi,

Can you give me exact username which you use for ftp to login.

Regards,
Kathirvel.S
storeftpuser

is the one Im using
 
Old 12-29-2012, 09:24 AM   #23
kathirvel
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Registered: Jan 2011
Location: Bangalore
Distribution: RHEL,OEL
Posts: 51

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Hi,
Enable/add the following entries in vsftpd.conf file & add your username in /etc/vsftpd/chroot_list file.
chroot_list_enable=YES
chroot_list_file=/etc/vsftpd/chroot_list


Try this,I hope u will get what you try.

Regards,
Kathirvel.s
 
  


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