Unable to connect to TFTP server - FOG 0.32



  • The server was working fine until one of the following blew it up: a series of patches and reboots, or likewise-open for active directory authentication.

    I then started doing this [url]http://www.fogproject.org/wiki/index.php/Unable_to_connect_to_TFTP[/url] procedure again and ad no luck. Are these passwords supposed to be encrypted with fogcrypt? I didn’t do this, as I thought that was only for AD authentication.

    I am unable to FTP to this server as well. I read in another thread you need to have port 20 open as well as 21, but I seem to only be listening on port 21. Could this be my issue? This is what happens when I try to FTP:

    root@Sierra:~# ftp localhost
    Connected to localhost.
    220 (vsFTPd 2.2.2)
    Name (localhost:root): fog
    331 Please specify the password.
    Password:
    530 Login incorrect.
    Login failed.
    ftp>

    The password is definitely correct as I’ve set it many times using the passwd command.

    I’ve never changed the IP address of the machine, so the IP address listed in the config files is correct as well.

    I also noticed that the permissions on my images folder had changed, so I changed them to:
    root@Sierra:~# ls -laR /images
    /images:
    total 16
    drwxrwxrwx 4 fog fog 4096 2013-06-10 12:13 .
    drwxr-xr-x 24 root root 4096 2013-06-13 09:22 …
    drwxrwxrwx 2 fog fog 4096 2013-06-10 12:13 dev
    -rwxrwxrwx 1 fog fog 0 2013-06-05 12:27 .mntcheck
    drwxrwxrwx 2 fog fog 4096 2013-06-10 12:07 Optiplix390Win7x86

    /images/dev:
    total 8
    drwxrwxrwx 2 fog fog 4096 2013-06-10 12:13 .
    drwxrwxrwx 4 fog fog 4096 2013-06-10 12:13 …
    -rwxrwxrwx 1 fog fog 0 2013-06-05 12:27 .mntcheck

    /images/Optiplix390Win7x86:
    total 8437560
    drwxrwxrwx 2 fog fog 4096 2013-06-10 12:07 .
    drwxrwxrwx 4 fog fog 4096 2013-06-10 12:13 …
    -rwxrwxrwx 1 fog fog 512 2013-06-10 12:07 d1.mbr
    -rwxrwxrwx 1 fog fog 8900268 2013-06-10 12:07 d1p1.img
    -rwxrwxrwx 1 fog fog 8631143059 2013-06-10 12:13 d1p2.img

    I found 2 vsftpd.conf files in /etc, I’m unsure if I made the backup file or not, but this is the cat of them:
    root@Sierra:~# cat /etc/vsftp*

    This one is /etc/vsftpd.conf
    anonymous_enable=NO
    local_enable=YES
    write_enable=YES
    local_umask=022
    dirmessage_enable=YES
    xferlog_enable=YES
    connect_from_port_20=YES
    xferlog_std_format=YES
    listen=YES
    pam_service_name=vsftpd
    userlist_enable=NO
    tcp_wrappers=YES

    This one is /etc/vsftpd.conf.fogbackup

    Example config file

    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? (Disabled by default)

    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=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 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().

    #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

    Debian customization

    Some of vsftpd’s settings don’t fit the Debian filesystem layout by

    default. These settings are more Debian-friendly.

    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

    What else can I check for?



  • I solved this problem, I had to uninstall likewise-open which I used to authenticate to the server via active directory/ldap.


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