openvpn service安装与配置 1.下载脚本wget https://git.io/vpn -O openvpn-install.sh
1 2 3 4 chmod +x openvpn-install.shwget https://git.io/vpn -O openvpn-install.sh && bash openvpn-install.sh
2.运行脚本./openvpn-install.sh
,设置如下
监听地址设置为空 IP address:
Protocol:[2]TCP
Port:1194
不选DNS:
client name: client_k2
External IP : 112.74.51.136
3. 配置服务端vim /etc/openvpn/server.conf
1 2 3 4 5 6 7 8 9 10 11 12 13 ;ifconfig-pool-persist ipp.txt ;push "redirect-gateway def1 bypass-dhcp" push "route 10.14.0.0 255.255.255.0" push "route 192.168.123.0 255.255.255.0" route 192.168.123.0 255.255.255.0 10.14.0.2 client-config-dir ccd client-to-client
4. 配置客户端路由mkdir /etc/openvpn/ccd
和vim /etc/openvpn/ccd/client_k2
1 2 3 4 5 ifconfig-push 10.14.0.2 255.255.255.0 iroute 192.168.123.0 255.255.255.0 route 192.168.123.0 255.255.255.0
5.添加客户端./openvpn-install.sh
Select an option[1-4]:1 (add a new user)
client name: client_worker
1 2 3 4 5 6 7 vim /etc/openvpn/server.conf systemctl restart openvpn@server.service systemctl enable openvpn@server.service
6.下载ovpn文件,并修改配置,注释调#setenv opt block-outside-dns
7.常用命令 1 2 3 4 5 6 systemctl restart openvpn@server.service systemctl enable openvpn@server.service scp root@112.74.51.136:/root/client_xuan_ubuntu.ovpn ./
openvpn client 安装与配置 1.安装 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 yum update yum install vim yum install epel-release yum clean all yum update yum makecache yum install openvpn iptables-services scp root@112.74.51.136:~/client_vm.ovpn /etc/openvpn/client/ openvpn --daemon --cd /etc/openvpn/client --config client_vm.ovpn --log-append /etc/openvpn/openvpn.log tail -100f /etc/openvpn/openvpn.log ps -ef | grep openvpn kill <pid> vim /lib/systemd/system/openvpn-client\@.service ExecStart=/usr/sbin/openvpn --suppress-timestamps --nobind --config %i.conf ExecStart=/usr/sbin/openvpn --daemon --config %i.ovpn --log-append /etc/openvpn/openvpn.log systemctl restart openvpn-client@client_vm systemctl enable openvpn-client@client_vm
openvpn 服务端的局域网远程访问 准备工作,安装iptables It is possible to go back to a more classic iptables setup. First, stop and mask the firewalld service:
1 2 systemctl stop firewalld systemctl mask firewalld
Then, install the iptables-services package:
1 yum install iptables-services
Enable the service at boot-time:
1 systemctl enable iptables
Managing the service
1 systemctl [stop|start|restart] iptables
Saving your firewall rules can be done as follows:
添加路由
1 2 iptables -t nat -A POSTROUTING -s 10.14.208.0/24 -j SNAT --to-source 192.168.1.230 service iptables save
vim /etc/openvpn/server.conf
添加
1 push "route 192.168.1.0 255.255.255.0"
腾讯云openvpn服务器所在内网供openvpn客户端访问 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 sudo iptables -t nat -A POSTROUTING -s 10.34.0.0/24 -o eth0 -j MASQUERADEsudo iptables -nL -t natChain POSTROUTING (policy ACCEPT) target prot opt source destination MASQUERADE all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match src-type LOCAL MASQUERADE all -- 172.17.0.0/16 0.0.0.0/0 MASQUERADE all -- 172.18.0.0/16 0.0.0.0/0 MASQUERADE tcp -- 172.18.0.11 172.18.0.11 tcp dpt:3306 MASQUERADE all -- 10.34.0.0 0.0.0.0/0 MASQUERADE all -- 10.34.0.0/24 0.0.0.0/0 vim /etc/sysctl.conf >net.ipv4.ip_forward = 1 sysctl -p
子网访问总结 服务端子网(服务端是网关) 服务端子网(服务端不是网关) 客户端子网(客户端是网关) 客户端子网(客户端不是网关) 不是网关统一需要在客户端或服务端设置转发
1 2 3 4 5 6 # 10.34.0.0为openvpn网段 sudo iptables -t nat -A POSTROUTING -s 10.34.0.0/24 -o eth0 -j MASQUERADE #还需要检查是否开启ipv4转发 vim /etc/sysctl.conf >net.ipv4.ip_forward = 1 sysctl -p
注意事项 iptables不需要启动,也可以做路由转发
openvpn tun模式下客户端与内网机器通信
iptables规则的查看和清除
iptables 添加,删除,查看,修改
How can i use iptables on centos 7?
使用openvpn实现访问远程网络
参考 官网
脚本github官网Nyr/openvpn-install
openvpn的一个一键安装脚本“openvpn-install”让openvpn重放光彩,又可用openvpn翻墙了
How to Configure OpenVPN Server on CentOS 7.3
使用 OpenVPN 互联多地机房及Dokcer跨主机/机房通讯
扩大OpenVPN使用范围,包含服务器或客户端子网中的其他计算机