vsftpインストール

検証環境

OS: CentOS 4.4
vsftpd バージョン　2.0.1-5.EL4.5

vsftpインストール

いつもどおり、簡単楽チンのyumを使ってインストールします。

yumでインストール

# yum -y install vsftpd
Setting up Install Process
Setting up repositories
Reading repository metadata in from local files
Parsing package install arguments
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Package vsftpd.i386 0:2.0.1-5.EL4.5 set to be updated
--> Running transaction check

Dependencies Resolved

=============================================================================
 Package                 Arch       Version          Repository        Size
=============================================================================
Installing:
 vsftpd                  i386       2.0.1-5.EL4.5    base              121 k

Transaction Summary
=============================================================================
Install      1 Package(s)
Update       0 Package(s)
Remove       0 Package(s)
Total download size: 121 k
Downloading Packages:
(1/1): vsftpd-2.0.1-5.EL4 100% |=========================| 121 kB    00:00
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing: vsftpd                       ######################### [1/1]

Installed: vsftpd.i386 0:2.0.1-5.EL4.5
Complete!

vsftpd設定

今回はとりあえず動作させる為に下記のような設定でインストールしてみます。
vsftpdはもっと色々な設定をすることが出来るのですが、それらについては後ほど資料を作成する予定です。

基本設定項目

設定ファイル（/etc/vsftpd/vsftpd.conf）編集

vsftpdの設定ファイルである/etc/vsftpd/vsftpd.confを設定します。

# cp -p /etc/vsftpd/vsftpd.conf /etc/vsftpd/vsftpd.conf_yyyymmdd
# vi /etc/vsftpd/vsftpd.conf

設定内容

# 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=YES
anonymous_enable=NO     <--- anonymousFTPの禁止
#
# Uncomment this to allow local users to log in.
local_enable=YES        <---　ローカルユーザ（サーバに登録されているユーザ）のログイン許可
#
# 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=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 turning on ascii_download_enable enables malicious remote parties
# to consume your I/O resources, by issuing the command "SIZE /big/file" in
# ASCII mode.
# These ASCII options are split into upload and download because you may wish
# to enable ASCII uploads (to prevent uploaded scripts etc. from breaking),
# without the DoS risk of SIZE and ASCII downloads. ASCII mangling should be
# on the client anyway..
#ascii_upload_enable=YES
ascii_upload_enable=YES         <--- asciiモードでのアップロード許可
#ascii_download_enable=YES
ascii_download_enable=YES       <--- asciiモードでのダウンロード許可
#
# 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_local_user=YES          <--- chroot環境の適用
chroot_list_enable=YES         <--- chroot除外ユーザリストの適用
# (default follows)
chroot_list_file=/etc/vsftpd.chroot_list    <--- chroot除外ユーザリストのパス
#
# 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
ls_recurse_enable=YES    <--- ls コマンドのオプション-Rによる、再帰検索の許可

pam_service_name=vsftpd
userlist_enable=YES
#enable for standalone mode
listen=YES                <--- standaloneモードでの起動
tcp_wrappers=YES

use_localtime=YES        <--- 時間表示にJSTを使用
text_userdb_names=YES    <--- ユーザ名・グループ名の表示

vsftp起動

設定が完了したら、いよいよvsftpdを起動します。

# /etc/init.d/vsftpd start
vsftpd 用の vsftpd を起動中:             [  OK  ]

動作確認

実際にログインしてみて、ログインできるか確認してみます。

# ftp localhost
Connected to sun.server-memo.net.
220 (vsFTPd 2.0.1)
530 Please login with USER and PASS.
530 Please login with USER and PASS.
KERBEROS_V4 rejected as an authentication type
Name (localhost:root): tamo
331 Please specify the password.
Password:
230 Login successful.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> ls -la
227 Entering Passive Mode (127,0,0,1,184,192)
150 Here comes the directory listing.
drwx------    4 tamo     tamo         4096 Jan 15 15:20 .
drwxr-xr-x    3 root     root         4096 Jan 10 17:28 ..
-rw-------    1 tamo     tamo          597 Feb 14 15:46 .bash_history
-rw-r--r--    1 tamo     tamo           24 Jan 10 17:28 .bash_logout
-rw-r--r--    1 tamo     tamo          191 Jan 10 17:28 .bash_profile
-rw-r--r--    1 tamo     tamo          124 Jan 10 17:28 .bashrc
-rw-r--r--    1 tamo     tamo         5619 Jan 10 17:28 .canna
-rw-r--r--    1 tamo     tamo          383 Jan 10 17:28 .emacs
-rw-------    1 tamo     tamo          972 Jan 15 15:10 .viminfo
drwx------    5 tamo     tamo         4096 Jan 15 15:20 Maildir
drwxrwxr-x    2 tamo     tamo         4096 Jan 15 03:57 ruby_test
226 Directory send OK.
ftp> by
221 Goodbye.

自動起動設定

OS起動時にvsftpを自動起動するようにchkconfigコマンドを使って設定します。

自動起動設定

# chkconfig vsftpd on

設定確認

chkconfig --listコマンドで設定の確認をします。

# chkconfig --list vsftpd
vsftpd          0:off   1:off   2:on    3:on    4:on    5:on    6:off

とりあず基本設定のみです:-p。