上篇文章写了基于证书的认证方式，这里记录下基于用户密码的认证方式

在Centos7 搭建Openvpn环境基础上修改

修改服务端 server.conf配置文件

添加几个参数

#客户端不进行证书认证，如果不加将实现证书和用户密码双重认证
client-cert-not-required

#用户和密码验证脚本
auth-user-pass-verify /etc/openvpn/checkpsw.sh via-env

#使用用户名密码登录认证
username-as-common-name

#脚本安全级别
script-security 3

创建脚本和用户密码文件

vim /etc/openvpn/checkpsw.sh

#!/bin/bash
###########################################################
# checkpsw.sh (C) 2004 Mathias Sundman <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-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

#增加执行权限  (2020-12-17标注：不加权限，连接会用户密码认证失败，因为执行不了脚本)
chmod +x /etc/openvpn/checkpsw.sh

#用户密码文件，格式：一行对应一个用户
vim /etc/openvpn/psw-file
jinc 123456
test 456789

#修改权限
chmod 777 /etc/openvpn/psw-file
chown root.openvpn /etc/openvpn/* -R

#重启openvpn服务
systemctl restart openvpn@server

win10 客户端配置文件修改

#注释掉
;cert client.crt
;key client.key

#添加上
auth-user-pass

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