My Life doomed just coz VSFTPD ---Help
I try to create a vsftpd on debain machine.
Obviouly I am not willing those ftp users are able to shell my machine. therefor I create those ftp accounts by useradd -m -c "xxxxx" -d /home/xxxxx -s /bin/false xxxxx however those account never work,, and vsftp logs only showing me like that Thu Apr 5 11:38:32 2007 [pid 13296] [ftpuser] FAIL LOGIN: Client "172.16.201.21 Once I use usermod to enable the shell access on those account, it works. Such .$%£$%$£%$£...... May be I am stupid!! I do need some help.. |
did you configure your vsftpd.conf?
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yes of coz
please see my vsftpd.conf below 1 # daemon started from an initscript. 2 listen=YES 3 # 4 # Run standalone with IPv6? 5 #listen_ipv6=YES 6 # 7 # Allow anonymous FTP? (Beware - allowed by default if you comment this out). 8 anonymous_enable=no 9 # 10 # Uncomment this to allow local users to log in. 11 local_enable=YES 12 # 13 # Uncomment this to enable any form of FTP write command. 14 write_enable=YES 15 # 16 # Default umask for local users is 077. You may wish to change this to 022, 17 # if your users expect that (022 is used by most other ftpd's) 18 local_umask=022 19 # 20 # Uncomment this to allow the anonymous FTP user to upload files. This only 21 # has an effect if the above global write enable is activated. Also, you will 22 # obviously need to create a directory writable by the FTP user. 23 #anon_upload_enable=YES 24 # 25 # Uncomment this if you want the anonymous FTP user to be able to create 26 # new directories. 27 #anon_mkdir_write_enable=YES 28 # 29 # Activate directory messages - messages given to remote users when they 30 # go into a certain directory. 31 dirmessage_enable=YES 32 # 33 # Activate logging of uploads/downloads. 34 xferlog_enable=YES 35 # 36 # Make sure PORT transfer connections originate from port 20 (ftp-data). 37 connect_from_port_20=YES 38 # 39 # If you want, you can arrange for uploaded anonymous files to be owned by 40 # a different user. Note! Using "root" for uploaded files is not 41 # recommended! 42 #chown_uploads=YES 43 #chown_username=whoever 44 # 45 # You may override where the log file goes if you like. The default is shown 46 # below. 47 xferlog_file=/var/log/vsftpd.log 48 # 49 # If you want, you can have your log file in standard ftpd xferlog format 50 #xferlog_std_format=YES 51 # 52 # You may change the default value for timing out an idle session. 53 #idle_session_timeout=600 54 # 55 # You may change the default value for timing out a data connection. 56 #data_connection_timeout=120 57 # 58 # It is recommended that you define on your system a unique user which the 59 # ftp server can use as a totally isolated and unprivileged user. 60 #nopriv_user=ftpsecure 61 # 62 # Enable this and the server will recognise asynchronous ABOR requests. Not 63 # recommended for security (the code is non-trivial). Not enabling it, 64 # however, may confuse older FTP clients. 65 #async_abor_enable=YES 66 # 67 # By default the server will pretend to allow ASCII mode but in fact ignore 68 # the request. Turn on the below options to have the server actually do ASCII 69 # mangling on files when in ASCII mode. 70 # Beware that on some FTP servers, ASCII support allows a denial of service 71 # attack (DoS) via the command "SIZE /big/file" in ASCII mode. vsftpd 72 # predicted this attack and has always been safe, reporting the size of the 73 # raw file. 74 # ASCII mangling is a horrible feature of the protocol. 75 #ascii_upload_enable=YES 76 #ascii_download_enable=YES 77 # 78 # You may fully customise the login banner string: 79 ftpd_banner=Welcome to NanoFTP service. 80 # 81 # You may specify a file of disallowed anonymous e-mail addresses. Apparently 82 # useful for combatting certain DoS attacks. 83 #deny_email_enable=YES 84 # (default follows) 85 #banned_email_file=/etc/vsftpd.banned_emails 86 # 87 # You may restrict local users to their home directories. See the FAQ for 88 # the possible risks in this before using chroot_local_user or 89 # chroot_list_enable below. 90 chroot_local_user=YES 91 # 92 # You may specify an explicit list of local users to chroot() to their home 93 # directory. If chroot_local_user is YES, then this list becomes a list of 94 # users to NOT chroot(). 95 #chroot_list_enable=YES 96 # (default follows) 97 #chroot_list_file=/etc/vsftpd.chroot_list 98 # 99 # You may activate the "-R" option to the builtin ls. This is disabled by 100 # default to avoid remote users being able to cause excessive I/O on large 101 # sites. However, some broken FTP clients such as "ncftp" and "mirror" assume 102 # the presence of the "-R" option, so there is a strong case for enabling it. 103 ls_recurse_enable=YES 104 # 105 # 106 # Debian customization 107 # 108 # Some of vsftpd's settings don't fit the Debian filesystem layout by 109 # default. These settings are more Debian-friendly. 110 # 111 # This option should be the name of a directory which is empty. Also, the 112 # directory should not be writable by the ftp user. This directory is used 113 # as a secure chroot() jail at times vsftpd does not require filesystem 114 # access. 115 secure_chroot_dir=/var/run/vsftpd 116 # 117 # This string is the name of the PAM service vsftpd will use. 118 pam_service_name=vsftpd 119 # 120 # This option specifies the location of the RSA certificate to use for SSL 121 # encrypted connections. 122 rsa_cert_file=/etc/ssl/certs/vsftpd.pem |
Well like you said, once you enable shell access, then FTP works for the specific user. This is because it is set up so when a user authenticates him or herself, it goes to their /home/username. So it looks like you cannot use the -s /bin/false.
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Hi there
I just want those FTP users actually been jailed in their home directory, meanwhile they not allow to access my box through shell by their ftp login details Thank you |
jus found the answer by myself.... I forget to put /bin/false in the /etc/shells
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