open V P N搭建

eagleshi

1. 关闭 selinux

[root@hxj ~]# setenforce 0
setenforce: SELinux is disabled



2. 安装 epel 源
rpm -ivh
http://mirrors.sohu.com/fedora-epel/7/x86_64/e/ epel-release-7-9.noarch.rpm


3.yum 安装
yum -y install openssl openssl-devel lzo open*** easy-rsa vim


4. 配置


修改 varsls
cd /usr/share/easy-rsa/2.0/
vim vars # 修改如下
export KEY_COUNTRY="CN"
export KEY_PROVINCE="HuBei"
export KEY_CITY="WuHan"
export KEY_ORG="123"
export KEY_EMAIL="123@qq.com"
export KEY_OU="123"


生成秘钥文件

source ./vars
./clean-all
./build-ca
./build-key-server cty_***server
./build-dh
./build-key cloud
其他的一路回车，但遇到 yes or no 的时候要输入 y


复制生成的证书至 open××× 目录

cp -rf keys/ /etc/open***/
cd /etc/open***/


编辑 server.conf 文件

[root@localhost open***]# vim server.conf
;local a.b.c.d
port 1194
proto udp
dev tun
ca keys/ca.crt
cert keys/cty_***server.crt
key keys/cty_***server.key # This file should be kept secret
dh keys/dh2048.pem
server 10.8.0.0 255.255.255.0
ifconfig-pool-persist ipp.txt
push "route 192.168.99.0 255.255.255.0"
push "route 192.168.98.0 255.255.255.0"
client-to-client
duplicate-cn
keepalive 10 120
comp-lzo
persist-key
persist-tun
status open***-status.log
log-append open***.log
verb 3
cipher AES-256-CBC


防火墙配置

yum install -y iptables-services
systemctl enable iptables
systemctl stop firewalld
systemctl start iptables
iptables -F
iptables -L


开启转发

vim /etc/sysctl.conf
net.ipv4.ip_forward = 1   # 在最后新增这一行



sysctl -p
iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE
iptables -I INPUT -p tcp --dport 1194 -m comment --comment "open***" -j ACCEPT # 针对 tcp 端口
iptables -I INPUT -p udp --dport 1194 -m comment --comment "open***" -j ACCEPT # 针对 udp 端口
service iptables save


启动

systemctl start open***@server.service
systemctl status open***@server.service


配置用户密码认证
修改 server.con 配置文件

[root@localhost open***]# tail -5 server.conf   # 在在最后新增以下 5 行
script-security 3
auth-user-pass-verify /etc/open***/checkpsw.sh via-env
#client-cert-not-required
username-as-common-name
client-config-dir /etc/open***/ccd


创建认证脚本

[root@localhost open***]# cat checkpsw.sh
#!/bin/sh
###########################################################
# checkpsw.sh (C) 2004 Mathias Sundman  
#
# This script will authenticate Open××× 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/open***/psw-file"
LOG_FILE="/var/log/open***-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
[root@localhost open***]# chmod u+x checkpsw.sh



创建账号文件

[root@localhost open***]# cat psw-file
test 123456
[root@localhost open***]# chmod 400 psw-file
[root@localhost open***]# chown nobody.nobody psw-file
[root@localhost open***]# systemctl restart open***@server




Windows 客户端配置文件


client
dev tun
proto udp
remote 27.18.17.241 1194
resolv-retry infinite
nobind
persist-key
persist-tun
ca ca.crt
cert cloud.crt
key cloud.key
comp-lzo
verb 3
auth-user-pass cloudpw.txt



添加权限控制
账号获取指定 ip
配置文件中添加
client-config-dir /etc/open***/ccd

把每个账号的 ip 配置信息单独建一个文件

[root@localhost open***]# ls ccd/
test zhangsan


echo "ifconfig-push 10.8.0.17 10.8.0.18" > ccd/zhangsan


ip 只能配套对应下表的地址集

[ 1, 2] [ 5, 6] [ 9, 10] [ 13, 14] [ 17, 18] [ 21, 22] [ 25, 26] [ 29, 30] [ 33, 34] [ 37, 38] [ 41, 42] [ 45, 46] [ 49, 50] [ 53, 54] [ 57, 58] [ 61, 62] [ 65, 66] [ 69, 70] [ 73, 74] [ 77, 78] [ 81, 82] [ 85, 86] [ 89, 90] [ 93, 94] [ 97, 98] [101,102] [105,106] [109,110] [113,114] [117,118] [121,122] [125,126] [129,130] [133,134] [137,138] [141,142] [145,146] [149,150] [153,154] [157,158] [161,162] [165,166] [169,170] [173,174] [177,178] [181,182] [185,186] [189,190] [193,194] [197,198] [201,202] [205,206] [209,210] [213,214] [217,218] [221,222] [225,226] [229,230] [233,234] [237,238] [241,242] [245,246] [249,250] [253,254]

添加 iptables 规则


iptables -A FORWARD -i tun0 -s 10.8.0.13/32 -d 192.168.99.101 -j ACCEPT
iptables -A FORWARD -s 10.8.0.13/32 -j DROP
iptables -A FORWARD -i tun0 -s 10.8.0.17/32 -d 192.168.98.0/24 -j ACCEPT
iptables -A FORWARD -s 10.8.0.17/32 -j DROP
service iptables save