Centos7.6 配置openvpn,账号密码登陆
首先可以到 http://www.micoder.cc/blog/2010.html 这里安装好，使用证书验证下登陆。
再配置账号与密码登陆验证功能。
1，server.conf 在最后添加以下配置字段
auth-user-pass-verify /etc/openvpn/auth_pass.sh via-file #开启用户密码脚本
client-cert-not-required #取消客户端的证书认证
username-as-common-name #不要求客户端有证书
script-security 3
#system 消除以下警告
2、新建认证脚本
vim /etc/openvpn/auth_pass.sh
#!/bin/bash
# the username+password is stored in a temporary file
# pointed to by $1
username=`head -1 $1`
password=`tail -1 $1`
if grep "$username:$password" pass_file > /dev/null 2>&1
then
exit 0
else
if grep "$username" pass_file > /dev/null 2>&1
then
echo "auth-user-pass-verify: Wrong password entered for user '$username'"
else
echo "auth-user-pass-verify: Unknown user '$username'"
fi
exit 1
fi
3、创建用户名密码
vim /etc/openvpn/pass_file
test:123
test2:123
4、增加auth_pass.sh和pass_file文件权限
chmod 777 auth_pass.sh
chmod 777 pass_file
5、重启VPN服务
systemctl restart openvpn@server
6、修改客户端配置文件
打开client1.ovpn
添加
auth-user-pass
7、重连
当然也可以使用最简单的方法：
直接从别的主机配置的把/etc/openvpn所有文件复到新主机上面。
1 yum update -y
2 yum -y install epel*
3 cat /etc/redhat-release
4 reboot
5 yum -y install gcc gcc-c++ autoconf automake libtool gettext lzo lzo-devel pam-devel
6 yum -y install openvpn easy-rsa
7 yum install -y iptables-services
8 systemctl enable iptables
9 systemctl stop firewalld
10 systemctl disable firewalld
11 iptables -I INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
12 iptables -A INPUT -p udp -m state --state NEW -m udp --dport 1194 -j ACCEPT
13 iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -j MASQUERADE
14 service iptables save
15 echo "net.ipv4.ip_forward = 1" >>/etc/sysctl.conf
16 sysctl -p
17 systemctl daemon-reload
18 systemctl enable openvpn@server
然后直接从别的主机配置的把/etc/openvpn所有文件复到新主机上面。
19 chmod -R 777 /etc/openvpn
20 systemctl restart openvpn@server
21 netstat -antulp
22 history
附件是一套完整的/etc/openvpn的文件，只需要修改存储账号密码的文件就可以了。
下面是server.conf 配置文件
#################################################
# 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
# 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 ca.crt
cert server.crt
key server.key # This file should be kept secret
# Diffie hellman parameters.
# Generate your own with:
# openssl dhparam -out dh2048.pem 2048
dh dh.pem
# Network topology
# Should be subnet (addressing via IP)
# unless Windows clients v2.0.9 and lower have to
# be supported (then net30, i.e. a /30 per client)
# Defaults to net30 (not recommended)
;topology subnet
# 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 10.8.0.0 255.255.255.0
# 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 10.8.0.4 255.255.255.0 10.8.0.50 10.8.0.100
# 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 192.168.10.0 255.255.255.0"
;push "route 192.168.20.0 255.255.255.0"
# 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"
# 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 114.114.114.114"
push "dhcp-option DNS 208.67.220.220"
# 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 ta.key 0 # This file is secret
# Select a cryptographic cipher.
# This config item must be copied to
# the client config file as well.
# Note that v2.4 client/server will automatically
# negotiate AES-256-GCM in TLS mode.
# See also the ncp-cipher option in the manpage
;cipher AES-256-CBC
# Enable compression on the VPN link and push the
# option to the client (v2.4+ only, for earlier
# versions see below)
;compress lz4-v2
;push "compress lz4-v2"
# For compression compatible with older clients use comp-lzo
# 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 100
# 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
# Notify the client that when the server restarts so it
# can automatically reconnect.
explicit-exit-notify 1
client-cert-not-required
username-as-common-name
script-security 3
auth-user-pass-verify /etc/openvpn/auth_pass.sh via-file
这个是客户端配置文件：
client
remote 120.24.103.86 1194
dev tun
proto udp
auth-user-pass
auth-nocache #禁止缓存账号密码
<ca>
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
</ca>
resolv-retry infinite
key-direction 1
keepalive 10 120
persist-key
persist-tun
nobind
verb 3
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