openVPN 搭建内网环境

OpenVPN 配置

server 安装:

1  setenforce 0
2  sed -i '/^SELINUX=/c\SELINUX=disabled' /etc/selinux/config
3  yum -y install openssl openssl-devel
4  yum -y install lzo
5  rpm -ivh [http://mirrors.sohu.com/fedora-epel/6/x86_64/epel-release-6-8.noarch.rpm](http://mirrors.sohu.com/fedora-epel/6/x86_64/epel-release-6-8.noarch.rpm)
6  sed -i 's/^mirrorlist=https/mirrorlist=http/' /etc/yum.repos.d/epel.repo
7  yum -y install openvpn easy-rsa
8  cd /usr/share/easy-rsa/2.0/
9  yum install -y vim
10 vim vars
​

export KEY_COUNTRY="CN"
export KEY_PROVINCE="ZHEJIANG"
export KEY_CITY="HANGZHOU"
export KEY_ORG="ABC123"
export KEY_EMAIL="[ABC123@mABC123.COM](mailto:ABC123@mABC123.COM)"
export KEY_OU="ABC123"

11  source vars
12  ./clean-all
13  ./build-ca
14  ./build-key-server server
15  ./build-key client1
16  ./build-dh
17  openvpn --genkey --secret keys/ta.key
18  mkdir /etc/openvpn/keys
19  cp /usr/share/easy-rsa/2.0/keys/{ca.crt,server.{crt,key},dh2048.pem,ta.key} /etc/openvpn/keys
20  cp /usr/share/doc/openvpn-2.3.14/sample/sample-config-files/server.conf /etc/openvpn/
21  echo "" > /etc/openvpn/server.conf
22  vim  /etc/openvpn/server.conf
23  sed -i '/net.ipv4.ip_forward/s/0/1/' /etc/sysctl.conf
24  sysctl -p
25  iptables -I INPUT -p tcp --dport 10194 -m comment --comment "openvpn" -j ACCEPT
26  iptables -t nat -A POSTROUTING -s 11.8.0.0/24 -j MASQUERADE
27  service iptables save
28  cd /etc/openvpn
29  vim checkpsw.sh
​

#!/bin/sh
###########################################################
# checkpsw.sh (C) 2004 Mathias Sundman <[mathias@openvpn.se](mailto:mathias@openvpn.se)>
#
# This script will authenticate OpenVPN users against
# a plain text file. The passfile should simply contain
# one row per user with the username first followed by
# one or more space(s) or tab(s) and then the password.

PASSFILE="/etc/openvpn/psw-file"

LOG_FILE="/var/log/openvpn/openvpn-password.log"

TIME_STAMP=`date "+%Y-%m-%d %T"`

###########################################################

if [ ! -r "${PASSFILE}" ]; then

 echo "${TIME_STAMP}: Could not open password file \"${PASSFILE}\" for reading." >> ${LOG_FILE}

 exit 1

fi

CORRECT_PASSWORD=`awk '!/^;/&&!/^#/&&$1=="'${username}'"{print $2;exit}' ${PASSFILE}`

if [ "${CORRECT_PASSWORD}" = "" ]; then

 echo "${TIME_STAMP}: User does not exist: username=\"${username}\", password=\"${password}\"." >> ${LOG_FILE}

 exit 1

fi

if [ "${password}" = "${CORRECT_PASSWORD}" ]; then

 echo "${TIME_STAMP}: Successful authentication: username=\"${username}\"." >> ${LOG_FILE}

 exit 0

fi

echo "${TIME_STAMP}: Incorrect password: username=\"${username}\", password=\"${password}\"." >> ${LOG_FILE}

exit 1

#############################################################################
​

30  chmod +x checkpsw.sh
31  cd /etc/openvpn
32  echo “openvpn openvpn" > psw-file
33  chmod 400 psw-file
34  chkconfig openvpn on
35  service openvpn start
​

server 服务端配置 centos :

port 10194
proto tcp
dev tun
ca keys/ca.crt
cert keys/server.crt
key keys/server.key # This file should be kept secret
dh keys/dh2048.pem
server 11.8.0.0 255.255.255.0
ifconfig-pool-persist ipp.txt
push "route 11.0.0.0 255.0.0.0"
push "route 192.168.0.0 255.255.0.0"
push "dhcp-option DNS 8.8.8.8"
push "dhcp-option DNS 8.8.4.4"
client-to-client
duplicate-cn
keepalive 10 120
cipher AES-256-CBC
comp-lzo
max-clients 100
persist-key
persist-tun

;调试使用 使用完删除 会记录 ip
;log openvpn.log
;log-append openvpn.log
;verb 5

script-security 3 system
auth-user-pass-verify /etc/openvpn/checkpsw.sh via-env
client-cert-not-required
username-as-common-name

client 客户端配置:

cd C:\Program Files\OpenVPN\config
1. 新建 test 文件件 和 test.ovpn
2. 复制从服务端 /etc/openvpn/keys/ca.crt 复制到 test 文件下
3. 编辑 test.ovpn

client
dev tun
proto tcp
;服务端地址
remote 120.77.220.15 10194
resolv-retry infinite
nobind
persist-key
persist-tun
;socks-proxy-retry

;代理
;socks-proxy 192.168.157.150 7070

;证书地址
ca test/ca.crt
ns-cert-type server
cipher AES-256-CBC
comp-lzo
verb 5

;是否所有流量走服务端
;redirect-gateway def1

auth-user-pass
reneg-sec 360000