本人按照該教程實踐論證，可以正常使用

搭建環境

centos6.5 ，64位 ，minidesktop

openvpn2.0.9

mysql5.1

部分指令碼需要根據自己的需要修改，提供了原作者的一份openvpn配置檔案，裡面的錯誤已經修正

下載地址：http://download.csdn.net/detail/mimi00x/8101427

轉載http://bbs.chinaunix.net/forum.php?mod=viewthread&tid=1823384

一、當前Linux為本人定製的作業系統CentOS5.5,自動安裝,大約要10分鐘,安裝完成後將系統更新升級到最新內容，及安裝必要的軟體包；
1、更新系統核心到最新.
#yum -y update
將系統更新到最新版本,系統更新完成後,如果yum安裝時提示錯誤資訊,請執行以下命令修復;
# rpm -import /etc/pki/rpm-gpg/RPM-GPG-KEY-*
2、yum 安裝必要的編譯環境(安裝GCC，GCC++編譯環境）
#yum install gcc gcc-c++


3、 安裝Apahce, PHP, Mysql, 以及php連線mysql庫元件,如果要換行的話請加"\";否則更新不完整；
[

[email protected] ~]# yum -y install httpd php mysql mysql-server php-mysql httpd-manual \
mod_ssl mod_perl         mod_auth_mysql php-mcrypt  php-gd php-xml php-mbstring \
php-ldap php-pear  php-xmlrpc  mysql-connector-odbc mysql-devel libdbi-dbd-mysql \
libgcrypt  libgcrypt-devel openssl openssl-devel  pam  pam-devel  pkgconfig

注意:將以上內容完放在一行執行,將以上的工作完成後就可以接著以下的工作了;
如圖:


安裝完成後啟動相關的服務：
[

[email protected] ~]# chkconfig mysqld on
[[email protected] ~]# chkconfig httpd on
[[email protected] ~]# service httpd start
Starting httpd:                                            [  OK  ]
[[email protected] ~]# [[email protected] ~]# service mysqld start
Starting MySQL:                                            [  OK  ]

4、配置動態域名更新htsprings.3322.org
#yum –y install lynx
安裝完成後設定定時更新：
#crontab -e
*/15 * * * * /usr/bin/lynx -mime_header -auth=nansen:8888888 "http://www.3322.org/dyndns/update?system=dyndns&hostname=test.3322.org"
儲存一下重啟crond服務；以後每隔15分鐘更新一次；
[

[email protected] /]# service crond restart
停止 crond：                                               [確定]
啟動 crond：                                               [確定]

5、Yum安裝rpm-build，安裝好後可以製作RPM包；
[[email protected] /]# yum -y install rpm-build

6、檢視openssl是否安裝成功;
[[email protected] openvpn]# rpm -qa |grep openssl
openssl-0.9.8e-12.el5_4.6
openssl-devel-0.9.8e-12.el5_4.6

7、注意：關閉SELinux ，iptables


二、OpenVPN軟體及相關軟體下載
（A）準備軟體
1、建立下載軟體目錄；
[[email protected] /]# mkdir -p /home/src/openvpn
[[email protected] /]# cd /home/src/openvpn/
2、下載openvpn-2.0.9.tar.gz軟體，建議不要裝2.1.3版本的軟體（不支援外部驗證）；
        # wget http://openvpn.net/release/openvpn-2.0.9.tar.gz
3、安裝 lzo
如果你想使用VPN連線的壓縮特性，或者你想將OpenVPN安裝為一個RPM包，安裝LZO Library。
        #wget http://www.oberhumer.com/opensource/lzo/download/lzo-2.03.tar.gz
4、下載mysql管理軟體phpmyadmin軟體
#wget http://nchc.dl.sourceforge.net/p ... 1.11-english.tar.gz

（B）開始安裝軟體
1、安裝lzo軟體；
[[email protected] openvpn]# ls
[[email protected] openvpn]# tar -zxvf lzo-2.03.tar.gz
[[email protected] openvpn]# cd lzo-2.03
[[email protected] openvpn]# ./configure && make &&make install
等待片刻直到完成，注意看有沒有出錯，一般情況不會有問題；
編輯 /etc/ld.so.conf
[[email protected] lzo-2.03]# cat >> /etc/ld.so.conf << EOF
/usr/local/lib
EOF
或者使用vi /etc/ld.so.conf
加入下內容：/usr/local/lib
編輯完後執行:
[[email protected] lzo-2.03]#ldconfig
使動態連線庫檔案生效,接下來編譯openvpn

2、安裝openvpn軟體
[[email protected] lzo-2.03]# cd /home/src/openvpn
[[email protected] openvpn]# tar -zxvf openvpn-2.0.9.tar.gz
[[email protected] openvpn]# cd openvpn-2.0.9
[[email protected] openvpn-2.0.9]# ./configure && make &&make install
Openvpn預設安裝位置是 /usr/local/sbin/openvpn
[[email protected] openvpn-2.0.9]# whereis openvpn
openvpn: /usr/local/sbin/openvpn

====================================================================================
此部分不必操作，想RPM安裝的上面部分LZO不用裝；
或者使製作RPM包後安裝需要安裝 lzo-devle包，可以從rpmfind.net網站上下載，這兩個軟體我已經下載好了，傳到伺服器上，過程略；
[[email protected] openvpn]# rpm -ivh lzo-2.03-2.1.i386.rpm
Preparing...             ########################################### [100%]
   1:lzo                    ########################################### [100%]
[[email protected] openvpn]# rpm -ivh lzo-devel-2.03-2.1.i386.rpm
Preparing...                ########################################### [100%]
   1:lzo-devel              ########################################### [100%]
[[email protected] openvpn]# rpmbuild -tb openvpn-2.0.9.tar.gz
製作好後，RPM安裝檔案在/usr/src/redhat/RPMS/i386/
[[email protected] openvpn]# cp /usr/src/redhat/RPMS/i386/openvpn-2.0.9-1.i386.rpm /home/src/openvpn
安裝省略
====================================================================================

三、配置openvpn伺服器
1、讓VI顯示彩色；
[[email protected] openvpn]# rpm -e sendmail --nodeps
[[email protected] conf]# vi /root/.bashrc
# .bashrc
# User specific aliases and functions
alias rm='rm -i'
alias cp='cp -i'
alias mv='mv -i'
alias vi='vim'             //加入這一行,編輯器使用VIM
# Source global definitions
if [ -f /etc/bashrc ]; then
        . /etc/bashrc
fi

2、        建立配置環境
[[email protected] openvpn-2.0.9]# mkdir -p /etc/openvpn/keys
[[email protected] openvpn-2.0.9]# mkdir -p /etc/openvpn/easy-rsa
[[email protected] openvpn-2.0.9]# cp easy-rsa/2.0/* /etc/openvpn/easy-rsa/
[[email protected] openvpn-2.0.9]# cd /etc/openvpn/easy-rsa/
--------------------------------------------------------------------
此目錄下以許多程式及指令碼, 以下為使用到的程式及指令碼說明
vars      指令碼, 是用來建立環境變數,設定所需要要的變數的指令碼
clean-all 指令碼,是建立生成ca證書及金鑰檔案所需要的檔案及目錄
build-ca  指令碼, 生成ca證書(互動)
build-dh  指令碼, 生成Diffie-Hellman檔案(互動)
build-key-server 指令碼, 生成伺服器端金鑰(互動)
build-key 指令碼, 生成客戶端金鑰(互動)
pkitool 指令碼, 直接使用vars的環境變數設定, 直接生成證書(非互動)
---------------------------------------------------------------------
# These are the default values for fields
# which will be placed in the certificate.
# Don't leave any of these fields blank.
export KEY_COUNTRY="CN"
export KEY_PROVINCE="GD"
export KEY_CITY="DG"
export KEY_ORG="OCEAN"
export KEY_EMAIL="[email protected]"
[[email protected] easy-rsa]# vi vars
You have new mail in /var/spool/mail/root
[[email protected] easy-rsa]# source ./vars
NOTE: If you run ./clean-all, I will be doing a rm -rf on /etc/openvpn/easy-rsa/keys
[[email protected] easy-rsa]# ./clean-all
[[email protected] easy-rsa]# ./build-ca
Generating a 1024 bit RSA private key
................++++++
...............++++++
writing new private key to 'ca.key'
-----
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [CN]:
Country Name (2 letter code) [CN]:
State or Province Name (full name) [GD]:
Locality Name (eg, city) [DG]:
Organization Name (eg, company) [OCEAN]:
Organizational Unit Name (eg, section) []:
Common Name (eg, your name or your server's hostname) [OCEAN CA]:
Email Address [[email protected]]:
                       
[[email protected] easy-rsa]# ./build-key-server server
Generating a 1024 bit RSA private key
................................++++++
...............++++++
writing new private key to 'server.key'
-----
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [CN]:
State or Province Name (full name) [GD]:
Locality Name (eg, city) [DG]:
Organization Name (eg, company) [OCEAN]:
Organizational Unit Name (eg, section) []:
Common Name (eg, your name or your server's hostname) [server]:
Email Address [[email protected]]:
Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:
An optional company name []:
Using configuration from /etc/openvpn/easy-rsa/openssl.cnf
Check that the request matches the signature
Signature ok
The Subject's Distinguished Name is as follows
countryName           RINTABLE:'CN'
stateOrProvinceName   RINTABLE:'GD'
localityName          RINTABLE:'DG'
organizationName      RINTABLE:'OCEAN'
commonName            RINTABLE:'server'
emailAddress          :IA5STRING:'[email protected]'
Certificate is to be certified until Oct 17 12:24:13 2020 GMT (3650 days)
Sign the certificate? [y/n]:y

1 out of 1 certificate requests certified, commit? [y/n]y
Write out database with 1 new entries
Data Base Updated
                       
                        [[email protected] easy-rsa]# ./build-key client1
Generating a 1024 bit RSA private key
........++++++
...................++++++
writing new private key to 'client1.key'
-----
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [CN]:
State or Province Name (full name) [GD]:
Locality Name (eg, city) [DG]:
Organization Name (eg, company) [OCEAN]:
Organizational Unit Name (eg, section) []:
Common Name (eg, your name or your server's hostname) [client1]:
Email Address [[email protected]]:

Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:
An optional company name []:
Using configuration from /etc/openvpn/easy-rsa/openssl.cnf
Check that the request matches the signature
Signature ok
The Subject's Distinguished Name is as follows
countryName           RINTABLE:'CN'
stateOrProvinceName   RINTABLE:'GD'
localityName          RINTABLE:'DG'
organizationName      RINTABLE:'OCEAN'
commonName            RINTABLE:'client1'
emailAddress          :IA5STRING:'[email protected]'
Certificate is to be certified until Oct 17 12:26:39 2020 GMT (3650 days)
Sign the certificate? [y/n]:y

1 out of 1 certificate requests certified, commit? [y/n]y
Write out database with 1 new entries
Data Base Updated
                       
生成完畢後會在keys目錄下多三個檔案出來，client1. crt client.key, client1.csr
Ca.crt ca.key client1. crt client.key, client1.csr五個檔案打包,以備客戶端vpn使用

[[email protected] easy-rsa]# ./build-dh
Generating DH parameters, 1024 bit long safe prime, generator 2
This is going to take a long time
...+.................+.............+..........+........................................................+........+....+........+...................+......................................+........................................................+...............................................++*++*++*

為了防止DDOS，生成ta.key
[[email protected] easy-rsa]# /usr/local/sbin/openvpn --genkey --secret keys/ta.key

壓縮keys下的所有檔案，以方便傳到FTP，供客戶端下載
[[email protected] easy-rsa]# tar -cvf client1.tar.gz keys/*
keys/ca.crt
keys/ca.key
keys/client1.crt
keys/client1.csr
keys/client1.key
[[email protected] easy-rsa]# tar -cvf client1.tar.gz keys/*
keys/01.pem
keys/02.pem
keys/ca.crt
keys/ca.key
keys/client1.crt
keys/client1.csr
keys/client1.key
keys/dh1024.pem
keys/index.txt
keys/index.txt.attr
keys/index.txt.attr.old
keys/index.txt.old
keys/serial
keys/serial.old
keys/server.crt
keys/server.csr
keys/server.key

keys/ta.key [[email protected] easy-rsa]#mv client1.tar.gz /var/ftp/pub
將證書複製到ftp公用目錄下
[[email protected] easy-rsa]# cp -rf keys/* /etc/openvpn/keys/
複製keys下的檔案到/etc/openvpn/keys下
[[email protected] easy-rsa]# rm -rf client*
刪除以client1開頭的檔案

3、複製配置檔案及指令碼；
[[email protected] openvpn]# cd /home/src/openvpn/openvpn-2.0.9
[[email protected] openvpn-2.0.9]# cp sample-config-files/server.conf /etc/openvpn/
[[email protected] openvpn]# vi server.conf
#################################################
# Sample OpenVPN 2.0 config file for            #
# multi-client server.                          #
#                                               #
# This file is for the server side              #
# of a many-clients <-> one-server              #
# OpenVPN configuration.                        #
#                                               #
# OpenVPN also supports                         #
# single-machine <-> single-machine             #
# configurations (See the Examples page         #
# on the web site for more info).               #
#                                               #
# This config should work on Windows            #
# or Linux/BSD systems.  Remember on            #
# Windows to quote pathnames and use            #
# double backslashes, e.g.:                     #
# "C:\\Program Files\\OpenVPN\\config\\foo.key" #
#                                               #
# Comments are preceded with '#' or ';'         #
#################################################

# Which local IP address should OpenVPN
# listen on? (optional)
;local a.b.c.d

# Which TCP/UDP port should OpenVPN listen on?
# If you want to run multiple OpenVPN instances
# on the same machine, use a different port
# number for each one.  You will need to
# open up this port on your firewall.
port 1194
;port 1723
# TCP or UDP server?
;proto tcp
proto udp

# "dev tun" will create a routed IP tunnel,
# "dev tap" will create an ethernet tunnel.
# Use "dev tap0" if you are ethernet bridging
# and have precreated a tap0 virtual interface
# and bridged it with your ethernet interface.
# If you want to control access policies
# over the VPN, you must create firewall
# rules for the the TUN/TAP interface.
# On non-Windows systems, you can give
# an explicit unit number, such as tun0.
# On Windows, use "dev-node" for this.
# On most systems, the VPN will not function
# unless you partially or fully disable
# the firewall for the TUN/TAP interface.
;dev tap
dev tun

# Windows needs the TAP-Win32 adapter name
# from the Network Connections panel if you
# have more than one.  On XP SP2 or higher,
# you may need to selectively disable the
# Windows firewall for the TAP adapter.
# Non-Windows systems usually don't need this.
;dev-node MyTap

# SSL/TLS root certificate (ca), certificate
# (cert), and private key (key).  Each client
# and the server must have their own cert and
# key file.  The server and all clients will
# use the same ca file.
#
# See the "easy-rsa" directory for a series
# of scripts for generating RSA certificates
# and private keys.  Remember to use
# a unique Common Name for the server
# and each of the client certificates.
#
# Any X509 key management system can be used.
# OpenVPN can also use a PKCS #12 formatted key file
# (see "pkcs12" directive in man page).

ca keys/ca.crt
cert keys/server.crt
key keys/server.key  # This file should be kept secret

# Diffie hellman parameters.
# Generate your own with:
#   openssl dhparam -out dh1024.pem 1024
# Substitute 2048 for 1024 if you are using
# 2048 bit keys.
dh keys/dh1024.pem

# Configure server mode and supply a VPN subnet
# for OpenVPN to draw client addresses from.
# The server will take 10.8.0.1 for itself,
# the rest will be made available to clients.
# Each client will be able to reach the server
# on 10.8.0.1. Comment this line out if you are
# ethernet bridging. See the man page for more info.
server 172.16.0.0 255.255.0.0

# Maintain a record of client <-> virtual IP address
# associations in this file.  If OpenVPN goes down or
# is restarted, reconnecting clients can be assigned
# the same virtual IP address from the pool that was
# previously assigned.
ifconfig-pool-persist ipp.txt

# Configure server mode for ethernet bridging.
# You must first use your OS's bridging capability
# to bridge the TAP interface with the ethernet
# NIC interface.  Then you must manually set the
# IP/netmask on the bridge interface, here we
# assume 10.8.0.4/255.255.255.0.  Finally we
# must set aside an IP range in this subnet
# (start=10.8.0.50 end=10.8.0.100) to allocate
# to connecting clients.  Leave this line commented
# out unless you are ethernet bridging.
;server-bridge 172.16.0.0 255.255.0.0 172.16.0.50 172.16.0.100

# Configure server mode for ethernet bridging
# using a DHCP-proxy, where clients talk
# to the OpenVPN server-side DHCP server
# to receive their IP address allocation
# and DNS server addresses.  You must first use
# your OS's bridging capability to bridge the TAP
# interface with the ethernet NIC interface.
# Note: this mode only works on clients (such as
# Windows), where the client-side TAP adapter is
# bound to a DHCP client.
;server-bridge

# Push routes to the client to allow it
# to reach other private subnets behind
# the server.  Remember that these
# private subnets will also need
# to know to route the OpenVPN client
# address pool (10.8.0.0/255.255.255.0)
# back to the OpenVPN server.

;push "route 172.16.0.0 255.255.0.0"
push "route 192.168.6.0 255.255.255.0"



# To assign specific IP addresses to specific
# clients or if a connecting client has a private
# subnet behind it that should also have VPN access,
# use the subdirectory "ccd" for client-specific
# configuration files (see man page for more info).

# EXAMPLE: Suppose the client
# having the certificate common name "Thelonious"
# also has a small subnet behind his connecting
# machine, such as 192.168.40.128/255.255.255.248.
# First, uncomment out these lines:
;client-config-dir ccd
;route 192.168.40.128 255.255.255.248
# Then create a file ccd/Thelonious with this line:
#   iroute 192.168.40.128 255.255.255.248
# This will allow Thelonious' private subnet to
# access the VPN.  This example will only work
# if you are routing, not bridging, i.e. you are
# using "dev tun" and "server" directives.

# EXAMPLE: Suppose you want to give
# Thelonious a fixed VPN IP address of 10.9.0.1.
# First uncomment out these lines:
;client-config-dir ccd
;route 10.9.0.0 255.255.255.252
# Then add this line to ccd/Thelonious:
#   ifconfig-push 10.9.0.1 10.9.0.2

# Suppose that you want to enable different
# firewall access policies for different groups
# of clients.  There are two methods:
# (1) Run multiple OpenVPN daemons, one for each
#     group, and firewall the TUN/TAP interface
#     for each group/daemon appropriately.
# (2) (Advanced) Create a script to dynamically
#     modify the firewall in response to access
#     from different clients.  See man
#     page for more info on learn-address script.
;learn-address ./script

# If enabled, this directive will configure
# all clients to redirect their default
# network gateway through the VPN, causing
# all IP traffic such as web browsing and
# and DNS lookups to go through the VPN
# (The OpenVPN server machine may need to NAT
# or bridge the TUN/TAP interface to the internet
# in order for this to work properly).
;push "redirect-gateway def1 bypass-dhcp"
;push "redirect-gateway def1"

# Certain Windows-specific network settings
# can be pushed to clients, such as DNS
# or WINS server addresses.  CAVEAT:
# http://openvpn.net/faq.html#dhcpcaveats
# The addresses below refer to the public
# DNS servers provided by opendns.com.
push "dhcp-option DNS 202.96.128.166"
push "dhcp-option DNS 192.168.6.2"

# Uncomment this directive to allow different
# clients to be able to "see" each other.
# By default, clients will only see the server.
# To force clients to only see the server, you
# will also need to appropriately firewall the
# server's TUN/TAP interface.
client-to-client

# Uncomment this directive if multiple clients
# might connect with the same certificate/key
# files or common names.  This is recommended
# only for testing purposes.  For production use,
# each client should have its own certificate/key
# pair.
#
# IF YOU HAVE NOT GENERATED INDIVIDUAL
# CERTIFICATE/KEY PAIRS FOR EACH CLIENT,
# EACH HAVING ITS OWN UNIQUE "COMMON NAME",
# UNCOMMENT THIS LINE OUT.
duplicate-cn

# The keepalive directive causes ping-like
# messages to be sent back and forth over
# the link so that each side knows when
# the other side has gone down.
# Ping every 10 seconds, assume that remote
# peer is down if no ping received during
# a 120 second time period.
keepalive 10 120

# For extra security beyond that provided
# by SSL/TLS, create an "HMAC firewall"
# to help block DoS attacks and UDP port flooding.
#
# Generate with:
#   openvpn --genkey --secret ta.key
#
# The server and each client must have
# a copy of this key.
# The second parameter should be '0'
# on the server and '1' on the clients.
tls-auth keys/ta.key 0 # This file is secret

# Select a cryptographic cipher.
# This config item must be copied to
# the client config file as well.
;cipher BF-CBC        # Blowfish (default)
;cipher AES-128-CBC   # AES
;cipher DES-EDE3-CBC  # Triple-DES

# Enable compression on the VPN link.
# If you enable it here, you must also
# enable it in the client config file.
comp-lzo

# The maximum number of concurrently connected
# clients we want to allow.
max-clients 10

# It's a good idea to reduce the OpenVPN
# daemon's privileges after initialization.
#
# You can uncomment this out on
# non-Windows systems.
user nobody
group nobody

# The persist options will try to avoid
# accessing certain resources on restart
# that may no longer be accessible because
# of the privilege downgrade.
persist-key
persist-tun

# Output a short status file showing
# current connections, truncated
# and rewritten every minute.
status openvpn-status.log

# By default, log messages will go to the syslog (or
# on Windows, if running as a service, they will go to
# the "\Program Files\OpenVPN\log" directory).
# Use log or log-append to override this default.
# "log" will truncate the log file on OpenVPN startup,
# while "log-append" will append to it.  Use one
# or the other (but not both).
log         openvpn.log
log-append  openvpn.log

# Set the appropriate level of log
# file verbosity.
#
# 0 is silent, except for fatal errors
# 4 is reasonable for general usage
# 5 and 6 can help to debug connection problems
# 9 is extremely verbose
verb 3

# Silence repeating messages.  At most 20
# sequential messages of the same message
# category will be output to the log.
;mute 20

;plugin /etc/openvpn/openvpn-auth-pam.so openvpn
;client-cert-not-required
;username-as-common-name


tmp-dir /tmp   
auth-user-pass-verify "php /etc/openvpn/pass.php" via-env
client-cert-not-required
username-as-common-name

client-connect /etc/openvpn/connect.sh
client-disconnect /etc/openvpn/disconnect.sh


＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝4、啟動openvpn服務
[[email protected]]# cp /hoe/src/openvpn/sample-scripts/openvpn.init /etc/init.d/openvpn
[[email protected]]# vi /etc/init.d/openvpn
                                        修改以下內容到openvpn的安裝位置
openvpn_locations="/usr/local/sbin/openvpn"

第119行去掉#
echo 1 > /proc/sys/net/ipv4/ip_forward
加入：
iptables -t nat -A POSTROUTING -s 10.8.0.0/16 -j SNAT --to 192.168.6.0
這樣客戶端就可以訪問伺服器所在的網路；

                        啟動Openvpn服務
[[email protected] keys]# service openvpn restart
正在關閉openvpn：                                          [確定]
正在啟動 openvpn：                                         [確定]
            [[email protected] keys]# service vsftpd restart
關閉 vsftpd：                                              [失敗]
為 vsftpd 啟動 vsftpd：                                    [確定]

5、        客戶端配置：Winxp SP3,下載客戶端軟體並安裝,我下載的是2.1.3版
配置檔案在安裝目錄下config目錄，可以制樣版配置然後修改；

Client.opvn
client
proto udp
dev tun
;auth-user-pass
auth-nocache
resolv-retry infinite
nobind
persist-key
persist-tun
comp-lzo
verb 3
remote 192.168.0.20 1194

;remote htsprings.3322.org 1194
#####################################################
# 以你客戶端ca認證檔案及金鑰檔案目錄為準
#####################################################
ca ca.crt
cert client1.crt
key client1.key
tls-auth ta.key 1
#####################################################
               
從伺服器上下載客戶端的證書檔案
這是我的伺服器ftp://192.168.0.20，下載後從伺服器上刪除它；

開啟client1.tar.gz這個包，複製客戶端證書到config目錄
Ca.key  ca.crt  client1.key  client1.src client1.crt  ta.key
點選connect，連線成功！
至此以證書方式驗證完成，已測試OK！

三、配置以Php驗證使用者連線；
之前已經安裝好了php mysql httpd等軟體，接下來配置相關的內容；
編輯伺服器配置檔案,當前目錄為/etc/openvpn/：
[[email protected] openvpn]# vi server.conf
加入以下內容並儲存：
tmp-dir /tmp   
auth-user-pass-verify "php /etc/openvpn/pass.php" via-env
client-cert-not-required
username-as-common-name

[[email protected] openvpn]# vi pass.php
#!/usr/bin/php -q
<?php
$db_host = "localhost";
$db_user = "root";
$db_pass = "";
$db_name = "openvpn";
$db_table="vpnuser";
$link =mysql_connect($db_host,$db_user,$db_pass);

#從openvpn獲得需要驗證的使用者名稱以及密碼
$username = getenv('username');
$password = getenv('password');

#初始化認證結果
$final=1;
$final=auth($username,$password,$link);
exit($final);
function auth($username,$password,$link){
        global $db_host,$db_user,$db_pass ,$db_name,$db_table;
        mysql_select_db($db_name,$link);

        $sql = "SELECT * FROM `vpnuser` WHERE `username`='$username' and password=md5('$password') and active='1' and expire_date >now()";
        $result = mysql_query($sql,$link)or die("Invalid query: " . mysql_error());;
        $rows = mysql_fetch_array($result);       

if ($rows)
{
return 0;
}
else
{
return 1;
}
}
?>



修改客戶端配置：
;auth-user-pass   將前面的;去掉，連線時出現輸入使用者名稱對話方塊，
點選connect，輸入用記和密碼即可成功連線。。。。。。。