CentOS 5.5安装Pure-ftpd

最近想更换一个FTP软件，看到Pure-FTPd不错，对客户端编码支持比较好，尤其是现在我同事大多使用WINDOWS，如果使用VSFTPD，上传上去的文档之类的全部是乱码，而且Pure-Ftpd还可以很方便的打开TLS认证，于是乎先卸载了原本安装的VSFTPD软件，先yum search pure，发现有Pure-FTPD，嘿嘿，直接YUM安装即可。

yum install pure-ftpd  

安装完成之后，就可以进行配置了。下面是我的配置文件，提供给大家看看。

 vi /etc/pure-ftpd/pure-ftpd.conf 


############################################################ 
# # # Configuration file for pure-ftpd wrappers # # # ############################################################ 
# If you want to run Pure-FTPd with this configuration 
# instead of command-line options, please run the 
# following command : 
# # /usr/sbin/pure-config.pl /etc/pure-ftpd/pure-ftpd.conf 
# # Please don't forget to have a look at documentation at 
# http://www.pureftpd.org/documentation.shtml for a complete list of 
# options. 
# Cage in every user in his home directory 将所有用户锁定于其home目录 
ChrootEveryone yes 

# If the previous option is set to "no", members of the following group 
# won't be caged. Others will be. If you don't want chroot()ing anyone, 
# just comment out ChrootEveryone and TrustedGID.设置一个信任的组ID，这样就可以不被锁定于home目录了。 
# TrustedGID 100 
# Turn on compatibility hacks for broken clients 可以兼容IE浏览器 
BrokenClientsCompatibility no 

# Maximum number of simultaneous users 服务器可以同时登录的最大客户端数目 
MaxClientsNumber 50 

# Fork in background 是否以守护进程运行 
Daemonize yes 

# Maximum number of sim clients with the same IP address同一IP最大连接数，默认是8 
MaxClientsPerIP 4 

# If you want to log all client commands, set this to "yes". 
# This directive can be duplicated to also log server responses.记录所有的客户端命令到日志里面。 
VerboseLog no 

# List dot-files even when the client doesn't send "-a". 显示隐藏文件。 
DisplayDotFiles yes  
# Don't allow authenticated users - have a public anonymous FTP only. 禁止匿名登录 
AnonymousOnly no 

# Disallow anonymous connections. Only allow authenticated users. 禁止匿名连接，只允许认证用户。 
NoAnonymous yes 

# Syslog facility (auth, authpriv, daemon, ftp, security, user, local*) 
# The default facility is "ftp". "none" disables logging. SyslogFacility ftp 
# Display fortune cookies 
# FortunesFile /usr/share/fortune/zippy 
# Don't resolve host names in log files. Logs are less verbose, but 
# it uses less bandwidth. Set this to "yes" on very busy servers or 
# if you don't have a working DNS. 
DontResolve yes 

# Maximum idle time in minutes (default = 15 minutes) 最大空闲时间 
MaxIdleTime 5 

# LDAP configuration file (see README.LDAP) 
# LDAPConfigFile /etc/pure-ftpd/pureftpd-ldap.conf 
# MySQL configuration file (see README.MySQL) 
# MySQLConfigFile /etc/pure-ftpd/pureftpd-mysql.conf 
# Postgres configuration file (see README.PGSQL) 
# PGSQLConfigFile /etc/pure-ftpd/pureftpd-pgsql.conf 
# PureDB user database (see README.Virtual-Users) 
# PureDB /etc/pure-ftpd/pureftpd.pdb # Path to pure-authd socket (see README.Authentication-Modules) 
# ExtAuth /var/run/ftpd.sock 
# If you want to enable PAM authentication, uncomment the following line 
PAMAuthentication yes 

# If you want simple Unix (/etc/passwd) authentication, uncomment this 
UnixAuthentication yes 

# Please note that LDAPConfigFile, MySQLConfigFile, PAMAuthentication and 
# UnixAuthentication can be used only once, but they can be combined 
# together. For instance, if you use MySQLConfigFile, then UnixAuthentication, 
# the SQL server will be asked. If the SQL authentication fails because the 
# user wasn't found, another try 
# will be done with /etc/passwd and 
# /etc/shadow. If the SQL authentication fails because the password was wrong, 
# the authentication chain stops here. Authentication methods are chained in 
# the order they are given. 

# 'ls' recursion limits. The first argument is the maximum number of 
# files to be displayed. The second one is the max subdirectories depth 
LimitRecursion 2000 8 

#Are anonymous users allowed to create new directories ? 
AnonymousCanCreateDirs no 

# If the system is more loaded than the following value, 
# anonymous users aren't allowed to download. 
MaxLoad 4 

# Port range for passive connections replies. - for firewalling. PASSIVE端口范围 
PassivePortRange 45000 50000 

# Force an IP address in PASV/EPSV/SPSV replies. - for NAT. 
# Symbolic host names are also accepted for gateways with dynamic IP 
# addresses. 
#如果FTP服务器在内网，而PASSIVE的模式是被动连接，所以要指定一个公网IP。如果不是通过NAT出公网，就不需要了。 
ForcePassiveIP x.x.x.x 

# Upload/download ratio for anonymous users. 
# AnonymousRatio 1 10 

# Upload/download ratio for all users. 
# This directive superscedes the previous one. 
# UserRatio 1 10 

# Disallow downloading of files owned by "ftp", ie. 
# files that were uploaded but not validated by a local admin. 
AntiWarez yes 

# IP address/port to listen to (default=all IP and port 21). 
# FTP服务绑定的IP和端口，我发现设置为127.0.0.1后，不能连接，设置为0.0.0.0后就可以，这个大家注意一下。 
# Bind 127.0.0.1,21 

# Maximum bandwidth for anonymous users in KB/s 
# AnonymousBandwidth 8 

# Maximum bandwidth for *all* users (including anonymous) in KB/s 
# Use AnonymousBandwidth *or* UserBandwidth, both makes no sense. 
# UserBandwidth 8 

# File creation mask. <umask files="" for="">:</umask><umask dirs="" for=""> . 
# 177:077 if you feel paranoid. 
Umask 133:022 

# Minimum UID for an authenticated user to log in. 登录用户的UID如果低于500，是无法登录的。 
MinUID 500 

# Do not use the /etc/ftpusers file to disable accounts. We're already 
# using MinUID to block users with uid :<max anonymous="" sessions=""> 
# For instance, 3:20 means that the same authenticated user can have 3 active 
# sessions max. And there are 20 anonymous sessions max. 
# PerUserLimits 3:20 

# When a file is uploaded and there is already a previous version of the file 
# with the same name, the old file will neither get removed nor truncated. 
# Upload will take place in a temporary file and once the upload is complete, 
# the switch to the new version will be atomic. For instance, when a large PHP 
# script is being uploaded, the web server will still serve the old version and 
# immediatly switch to the new one as soon as the full file will have been 
# transfered. This option is incompatible with virtual quotas. 
# NoTruncate yes 

# This option can accept three values : 
# 0 : disable SSL/TLS encryption layer (default). 关闭SSL/TLS加密层，也就是只支持普通的明文连接。 
# 1 : accept both traditional and encrypted sessions. 支持明文连接和加密连接。 
# 2 : refuse connections that don't use SSL/TLS security mechanisms, 
# including anonymous sessions.只允许SSL/TLS加密连接。 
# Do _not_ uncomment this blindly. Be sure that : 
# 1) Your server has been compiled with SSL/TLS support (--with-tls), 
# 2) A valid certificate is in place, 
# 3) Only compatible clients will log in. TLS 2 

# Listen only to IPv4 addresses in standalone mode (ie. disable IPv6) 
# By default, both IPv4 and IPv6 are enabled. 只监听IPV4地址。 
IPV4Only yes 

# Listen only to IPv6 addresses in standalone mode (ie. disable IPv4) 
# By default, both IPv4 and IPv6 are enabled. 
IPV6Only no 

# UTF-8 support for file names (RFC 2640) 
# Define charset of the server filesystem and optionnally the default charset 
# for remote clients if they don't use UTF-8. 
# Works only if pure-ftpd has been compiled with --with-rfc2640 
# 客户端编码 
#FileSystemCharset utf-8 
ClientCharset gbk  

编辑完成后，就可以启动服务了。

chkconfig --levels 235 pure-ftpd on  
service pure-ftpd start  

接着就可以在iptables里面增加相应的规则，比如运行21端口和PASSIVE端口范围。

iptables -A INPUT -p tcp -m state --state NEW --dport 21 -j ACCEPT iptables -A INPUT -p tcp -m multiport --dports 45000:50000 -j ACCEPT  

如果在内网，还需要在网关上添加端口映射。

iptables -t nat -A PREROUTING -d 202.123.212.113 -p tcp -m tcp --dport 2020 -j DNAT --to-destination 192.168.10.3:2020  
iptables -t nat -A PREROUTING -d 202.123.212.113 -p tcp -m multiport --dports 43000:45000 -j DNAT --to-destination 192.168.10.3  

附：证书生成方法

mkdir -p /etc/ssl/private/  
openssl req -x509 -nodes -days 7300 -newkey rsa:2048 -keyout /etc/ssl/private/pure-ftpd.pem -out /etc/ssl/private/pure-ftpd.pem  
chmod 600 /etc/ssl/private/pure-ftpd.pem