Linux系统为ProFTPd和vsftpd配置ssl加密传输

在LINUX系统上建立FTP加密传输
1、下载最新的软件版本：
# wget ftp://ftp.proftpd.org/distrib/source/proftpd-1.3.0rc3.tar.gz
2、创建FTP组和用户
首先创建ROFTPD运行的用户和组：
# groupadd nogroup
# useradd ?g nogroup ?d /dev/null ?s /sbin/nologin nobody
   首先创建上传下载的用户和组：
# groupadd ftp
# useradd ?g ftp ?d /home/down ?s /sbin/nologin down
# useradd ?g ftp ?d /home/upload ?s /sbin/nologin upload
   用户密码设置略
3、编译安装PROFRPD:
# tar ?zxvf proftpd-1.3.0rc3.tar.gz
# cd proftpd-1.3.0rc3
# ./configure
--prefix=/usr/local/proftpd
--syscOnfdir=/etc
--enable-autoshadow
--localstatedir=/var/run
--enable-ctrls
--with-modules=mod_tls
# make
# make install
4、配置PROFTPD服务器：
# vi /etc/proftpd.conf
================+================+================
# This is a basic ProFTPD configuration file (rename it to
# 'proftpd.conf' for actual use. It establishes a single server
# and a single anonymous login. It assumes that you have a user/group
# "nobody" and "ftp" for normal operation and anon.
ServerName                                      "jekay"
ServerType                                      standalone
DefaultServer                                   on
AllowRetrieveRestart                            on
AllowStoreRestart                               on
ServerType                                      standalone
ServerIdent                                     on
SystemLog                                       /var/log/proftpd.log
UseReverseDNS                                   off
IdentLookups                                    off
RequireValidShell                               off
# Port 21 is the standard FTP port.
Port                                            21
# Umask 022 is a good standard umask to prevent new dirs and files
# from being group and world writable.
Umask                                           022
MaxInstances                                    100
# Set the user and group under which the server will run.
User                                            nobody
Group                                           nogroup
# To cause every FTP user to be "jailed" (chrooted) into their home
# directory, uncomment this line.
DefaultRoot ~
# Normally, we want files to be overwriteable.

AllowOverwrite                                  on

# We want 'welcome.msg' displayed at login, and '.message' displayed
# in each newly chdired directory.
DisplayLogin                                    .welcome
DisplayFirstChdir                               .message
# Limit User of being enbled login ftp server

AllowGroup ftp
DenyAll

SSL加密的参数在这里，重点！
#########################ssl/tls#######################
MOD_TLS SETTING

TLSEngine on
TLSLog /var/log/proftpd-tls.log
TLSProtocol SSLv23
# Are clients required to use FTP over TLS when talking to this server?
TLSRequired ctrl
# Server's certificate
TLSRSACertificateFile /etc/proftpd.crt
TLSRSACertificateKeyFile /etc/proftpd.key
# Authenticate clients that want to use FTP over TLS
TLSVerifyClient off
#########################ssl/tls######################


DenyGroup ftp

TransferRate RETR 150 group ftp



DenyGroup ftp

TransferRate STOR 150 group ftp

MaxClientsPerHost 200
PassivePorts 55000 56000
================+================+================
创建PROFTPD的日志文件：
# touch /var/log/proftpd.log
# touch /var/log/proftpd-tls.log
# chown nobody:nogroup /var/log/proftpd.log /var/log/proftpd-tls.log
创建SSL传输的证书和密匙：
# cp /usr/share/ssl/openssl.cnf ./
# openssl req -new -x509 -nodes -config openssl.cnf -out proftpd.crt ?keyout proftpd.key
这里安装提示需要输入证书信息略
把证书和密匙复制到指定目录：
# cp proftpd.crt proftpd.key /etc/
最后创建PROFTPD启动脚本：
# vi /etc/init.d/proftpd #!/bin/sh
# Startup script for ProFTPD
# chkconfig: 345 85 15
# description: ProFTPD is an enhanced FTP server
# processname: proftpd
# config: /etc/proftpd.conf
# Source function library.
. /etc/rc.d/init.d/functions
if [ -f /etc/sysconfig/proftpd ]; then
      . /etc/sysconfig/proftpd
fi
PATH="$PATH:/usr/local/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
================+================+================
# chomd 755 /etc/init.d/proftpd
# chkconfig ?-add proftpd
# chkconfig proftpd on
5、客户端连接测试
到这里ftp服务器端安装设置完毕，登陆服务器的客户端我用了完全免费的FileZilla
本服务器支持两种客户端加密连接方式：
1. FTP over ssl (显示加密)方式连接。
2. FTP over tls (显示加密) 方式连接
建立在LINUX系统上的VSFTP加密传输
参考文档：ftp://vsftpd.beasts.org/users/ce ... pd-2.0.1/README.ssl
在众多的FTP服务器中VSFTP以安全，小巧著称。近年来一直受到人们的喜爱。通常情况下FTP包括认证过程，传输是明文传输的，在传输一些敏感数据时总是不能让人放心。
1.下载
最新的VSFTPD：
# wget ftp://vsftpd.beasts.org/users/cevans/vsftpd-2.0.3.tar.gz
2、 编译安装VSFTPD:
# tar ?zxvf vsftpd-2.0.3.tar.gz
# cd vsftpd-2.0.3
3、修改VSFTPD使其支持SSL传输：
修改builddefs.h文件中的：
#undef VSF_BUILD_TCPWRAPPERS
#define VSF_BUILD_PAM
#undef VSF_BUILD_SSL #define VSF_BUILD_TCPWRAPPERS
#undef VSF_BUILD_PAM
#define VSF_BUILD_SSL
4、开始编译安装：
# make
# make install
# cp vsftpd.conf /etc/
创建SSL证书：
# openssl req -new -x511 -nodes -out vsftpd.pem -keyout vsftpd.pem
# cp vsftpd.pem /usr/share/ssl/certs/vsftpd.pem
创建需要的帐号和目录：
# useradd ?d /dev/null ?s /sbin/nologin nobody
# mkdir /usr/share/empty
# mkdir /var/ftp
# useradd -d /var/ftp ?s /sbin/nologin ftp
# chown root:root /var/ftp
# chmod og-w /var/ftp
5、配置VSFTPD：
# vi /etc/vsftpd.conf anonymous_enable=NO
local_enable=YES
write_enable=YES
local_umask=022
#anon_upload_enable=YES
#anon_mkdir_write_enable=YES
dirmessage_enable=YES
xferlog_enable=YES
connect_from_port_20=YES
#chown_uploads=YES
#chown_username=whoever
#xferlog_file=/var/log/vsftpd.log
#xferlog_std_format=YES
#idle_session_timeout=600
#data_connection_timeout=120
#nopriv_user=ftpsecure
#async_abor_enable=YES
ascii_upload_enable=YES
ascii_download_enable=YES
ftpd_banner=Welcome to Serv-U FTP Server v5.0 for WinSock.
#deny_email_enable=YES
#banned_email_file=/etc/vsftpd.banned_emails
chroot_list_enable=YES
chroot_list_file=/etc/vsftpd.chroot_list
ls_recurse_enable=NO
hide_ids=YES
userlist_enable=NO
use_localtime=YES
listen=YES
listen_port=21
tcp_wrappers=YES
ssl_enable=YES
ssl_sslv2=YES
allow_anon_ssl=YES
force_local_data_ssl=YES
force_local_logins_ssl=YES
rsa_cert_file=/usr/share/ssl/certs/vsftpd.pem # touch /etc/vsftpd.chroot_list
写一个VSFTPD启动教本：
# vi /etc/init.d/vsftpd #!/bin/sh
# Copyright (c) 2004 by LLZQQ
# All rights reserved. # chkconfig: - 110 30
# description: Starts and stops the Vsftpd Service
# config: /etc/vsftpd.conf case "$1" in
start)
        /usr/local/sbin/vsftpd & stop)
        pkill vsftpd *)
        echo "Usage: $0 { start | stop }"
        exit 1 esac
exit 0
===========+=============+===========
# chmod 755 /etc/init.d/vsftpd
# chkconfig ?-add vsftpd
# chkconfig vsftpd on
6、测试
到这里ftp服务器端安装设置完毕，登陆服务器的客户端我用了完全免费的FileZilla