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Old 08-09-2010, 04:16 AM   #1
jonaskellens
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Flashing Snom IP-phone from FTP-server


Hello.

This question is related to the FTP-server.

I have vsftpd installed on CentOS 5.4.

I have placed the binary firmware file of the Snom phone into /var/ftp/pub

I am using several other directories in /var/ftp but their is always authentication necessary.

Is there some setting I need to make to allow an unauthenticated FTP-login to /var/ftp/pub ?!
 
Old 08-09-2010, 04:48 AM   #2
linuxlover.chaitanya
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You can allow anonymous user for the same.
 
Old 08-09-2010, 04:58 AM   #3
linuxlover.chaitanya
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For detailed vsftpd options and howto:

https://www.redhat.com/docs/manuals/...ftpd-conf.html
 
Old 08-09-2010, 05:06 AM   #4
jonaskellens
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Quote:
Originally Posted by linuxlover.chaitanya View Post
You can allow anonymous user for the same.
I have the following setting in /etc/vsftpd.conf :

Code:
# Allow anonymous FTP? (Beware - allowed by default if you comment this out).
anonymous_enable=YES
Restarted the vsftpd deamon, but I see no action in the vsftpd log.

This is my config file :

Code:
[root@server pub]# cat /etc/vsftpd/vsftpd.conf 
# Example config file /etc/vsftpd/vsftpd.conf
# Allow anonymous FTP? (Beware - allowed by default if you comment this out).
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
#
# 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().
#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 whith two configuration files.
# Make sure, that one of the listen options is commented !!
#listen_ipv6=YES

chroot_local_user=YES
pam_service_name=vsftpd
userlist_enable=YES
tcp_wrappers=YES
Code:
[root@server pub]# ls -l /var/ftp/pub/
-rw-r--r-- 1 root root 2900540 2009-12-09 14:28 snom320.bin
 
Old 08-09-2010, 05:13 AM   #5
linuxlover.chaitanya
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I do not work with vsftpd. Please check with the link in post#3.
And the ls shows the permissions on the particular file. You may want to change the default permissions in the configuration file if you want.
 
Old 08-09-2010, 05:14 AM   #6
linuxlover.chaitanya
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Code:
#

ftp_username — Specifies the local user account (listed in /etc/passwd) used for the anonymous FTP user. The home directory specified in /etc/passwd for the user is the root directory of the anonymous FTP user.

The default value is ftp.
#

no_anon_password — When enabled, the anonymous user is not asked for a password.

The default value is NO.
From the link in post#3
 
Old 08-09-2010, 05:46 AM   #7
jonaskellens
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So I now have the following :

Code:
anonymous_enable=YES
no_anon_password=YES
Code:
[root@server var]# cat /etc/passwd | grep ftp
ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin
Code:
[root@webserver var]# ls -l ftp/
drwxr-xr-x 2 ftp ftp 4096 2010-08-09 12:39 pub
[root@webserver var]# ls -l ftp/pub/
-rw-r--r-- 1 ftp ftp 2900540 2009-12-09 14:28 snom320.bin
Firewall is off :

Code:
[root@server var]# /sbin/service iptables status
Table: filter
Chain INPUT (policy ACCEPT)
num  target     prot opt source               destination         

Chain FORWARD (policy ACCEPT)
num  target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
num  target     prot opt source               destination
Still not working though... am I still missing something ?!
 
Old 08-09-2010, 06:07 AM   #8
linuxlover.chaitanya
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You should not be asked for password for anonymous logins now.
 
Old 08-09-2010, 06:33 AM   #9
jonaskellens
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The home directory of the ftp user is /var/ftp but my file is in /var/ftp/pub. Placing the file in /var/ftp does not change anything.

Also, tailing the vsftpd logfile shows no activity...
 
Old 08-09-2010, 07:26 AM   #10
linuxlover.chaitanya
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The issue was that you were being asked for password for login. Can you now login anonymously?
And what is your other issue? I do not understand. My replies are with respect to your original post.
If you have any other issue, please post it specifically.
 
Old 08-09-2010, 08:16 AM   #11
jonaskellens
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Quote:
Originally Posted by linuxlover.chaitanya View Post
If you have any other issue, please post it specifically.
Thank you for your help.

It works now as I had to use TFTP and not FTP.
 
  


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