安裝配置一個proftpd，達到以下要求
1 不允許匿名訪問。
2 開放一個帳號，只有在upload目錄有上傳權(quán)限，可以續(xù)傳，不能改名和刪除。
操作：
0 切換到root帳戶
[code:1:de92f96787] su root //輸入root的密碼。
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1 下載proftpd
地址：www.proftpd.org。這里我們下載了1.2.9版本
[code:1:de92f96787] wget
ftp://ftp.proftpd.org/distrib/source/proftpd-1.2.9.tar.gz
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2 安裝proftpd
切換到下載目錄，假設(shè)為/tmp/proftpd，然后
[code:1:de92f96787] tar zxvf proftpd-1.2.9.tar.gz //解壓
cd proftpd-1.2.9
./configure --prefix=/var/proftpd --sysconfdir=/etc
//設(shè)置安裝目錄/var/proftpd,配置文件目錄/etc
make
make install
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3 新建ftp專用帳號
就是上面目的中提到的那個專用帳號，這里以skate/skate(u/p)為例。
[code:1:de92f96787] groupadd skate
useradd skate -g skate -d /var/ftp -s /sbin/nologin
//設(shè)置/var/ftp目錄為ftp的目錄
passwd skate //設(shè)置skate用戶的密碼
mkdir /var/ftp/upload
chown skate.skate /var/ftp/upload //設(shè)置upload目錄skate用戶可寫
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4 設(shè)置proftpd
proftpd的配置文件就一個，就是/etc/proftpd.conf
[code:1:de92f96787] vi /etc/proftpd.conf //打開proftpd.conf
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####具體配置如下######
ServerName "Test ftp server..."
ServerType standalone
DefaultServer on
#端口
Port 21
Umask 022
#最大線程數(shù)
MaxInstances 30
User skate
Group skate
#DNS反查
UseReverseDNS off
IdentLookups off
#最大嘗試連接次數(shù)
MaxLoginAttempts 3
#每用戶線程
MaxClientsPerHost 2
#最大用戶數(shù)
MaxClients 20
DirFakeUser On skate
DirFakeGroup On skate
DeferWelcome On
#日志文件位置
SystemLog /var/log/proftpd.log
ServerIdent off
#限制skate組的skate用戶登錄時不能切換到其他目錄(只能呆在他的home目錄)
DefaultRoot ~ skate,skate
#設(shè)置只允許192.168.0的用戶登錄
#
#Order allow,deny
#Allow from 192.168.0.
#Deny from all
#
#設(shè)置只允許skate用戶登錄，否則系統(tǒng)用戶也可以登錄ftp
#
#Order allow,deny
#DenyUser !skate
#
#開起全盤的寫權(quán)限
AllowOverwrite on
AllowStoreRestart on
#允許FXP
# AllowForeignAddress on
AllowAll
#設(shè)置skate用戶在upload的限制
#DELE刪除權(quán)限
#RNFR RNTO重命名權(quán)限
#RMD XRMD移動目錄權(quán)限
DenyUser skate
#####結(jié)束######
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編輯完以后按Esc，然后輸入:x保存。
5 啟動服務(wù)
編輯一個啟動腳本(這個是從網(wǎng)上copy的，不是我寫的，感謝那個寫這個腳本的人，很好用，thx)
[code:1:de92f96787] vi /etc/rc.d/init.d/proftpd[/code:1:de92f96787]
[code:1:de92f96787]
#####腳本內(nèi)容開始########
#!/bin/sh
#
# Startup script for ProFTPD
#
# chkconfig: 345 85 15
# description: ProFTPD is an enhanced FTP server with
# a focus toward simplicity, security, and ease of configuration.
# It features a very Apache-like configuration syntax,
# and a highly customizable server infrastructure,
# including support for multiple 'virtual' FTP servers,
# anonymous FTP, and permission-based directory visibility.
# processname: proftpd
# config: /etc/proftpd.conf
#
# By: Osman Elliyasa
# $Id: proftpd.init.d,v 1.7 2002/12/07 21:50:27 jwm Exp $
# Source function library.
. /etc/rc.d/init.d/functions
if [ -f /etc/sysconfig/proftpd ]; then
. /etc/sysconfig/proftpd
fi
#下面這行設(shè)置環(huán)境變量，注意設(shè)置好你的proftpd的安裝目錄
PATH="$PATH:/usr/local/sbin:/var/proftpd/bin:/var/proftpd/sbin"
# See how we were called.
case "$1" in
start)
echo -n "Starting proftpd: "
daemon proftpd $OPTIONS
echo
touch /var/lock/subsys/proftpd
;;
stop)
echo -n "Shutting down proftpd: "
killproc proftpd
echo
rm -f /var/lock/subsys/proftpd
;;
status)
status proftpd
;;
restart)
$0 stop
$0 start
;;
reread)
echo -n "Re-reading proftpd config: "
killproc proftpd -HUP
echo
;;
suspend)
hash ftpshut >/dev/null 2>&1
if [ $? = 0 ]; then
if [ $# -gt 1 ]; then
shift
echo -n "Suspending with '$*' "
ftpshut $*
else
echo -n "Suspending NOW "
ftpshut now "Maintanance in progress"
fi
else
echo -n "No way to suspend "
fi
echo
;;
resume)
if [ -f /etc/shutmsg ]; then
echo -n "Allowing sessions again "
rm -f /etc/shutmsg
else
echo -n "Was not suspended "
fi
echo
;;
*)
echo -n "Usage: $0 {start
stop
restart
status
reread
resume"
hash ftpshut
if [ $? = 1 ]; then
echo '}'
else
echo '
suspend}'
echo 'suspend accepts additional arguments which are passed to
ftpshut(8)'
fi
exit 1
esac
if [ $# -gt 1 ]; then
shift
$0 $*
fi
exit 0
#######腳本結(jié)束#########
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按Esc，輸入:x保存。
然后添加到系統(tǒng)服務(wù)并啟動
[code:1:de92f96787]
chkconfig --add profptd
service proftpd start[/code:1:de92f96787]
以后可以用service proftpd restart來重起proftpd。
6 一點體會
看proftpd的文檔翻譯過的一句話：Finally, a special command is allowed which can be used
to control login access: LOGIN Connection or login to
the server. Applying ato this pseudo-command can be used to allow or deny
initial connection or login to the context. It has no
effect, and is ignored, when used in a context other than server
config,or(i.e. using it in acontext
is meaningless).
翻譯下：最后，有一個用來限制登陸的特殊命令，就是LOGIN。在中用這個，可以禁止或者允許連接進來。但是，如果不在Server config，
或者中使用的話，他將失去效用，或者說被忽略掉(比如在中使用就是無效的)。
proftpd感覺還是比vsftp功能配置上好用一點，主要掌握好段基本上應(yīng)用來說就沒有問題了。
