用一键工具在CentOS7上搭建VPS L2TP网络连接

在现代网络环境中，VPS（虚拟专有服务器）是一个非常强大的工具，可以让你在一台物理服务器上运行多个虚拟机，每个虚拟机都可以独立配置，满足不同的需求，L2TP是一种基于OpenVPN的隧道连接协议，主要用于将VPS连接到更广的互联网中,提供更稳定的网络连接。

如果你是第一次尝试在CentOS7上搭建VPS并配置L2TP网络连接，可能会感到有些困惑，不过不用担心，下面我会用简单易懂的语言，结合实际操作步骤,教你如何通过一键工具快速完成搭建。

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准备工作

在开始搭建之前,你需要准备以下物品：

1. CentOS7镜像：确保你的系统是最新版本的CentOS7，安装完成后,系统会自动安装所需的软件。
2. VPS主机的域名和IP地址：这些信息是VPS的域名和对应的公网IP地址,用于连接到互联网。
3. VPS的配置文件：包括/etchosts、/etc/sysconfig-l2tp-openvpn等文件,这些文件存储了VPS的网络设置。
4. 软件安装包：包括cpanel、winSCP和openvpn-server等工具,这些工具可以帮助你完成VPS的配置和连接。
5. 连接工具：如WinSCP或rsync,用于连接到VPS并同步文件。

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安装软件

使用RPM包安装软件

在CentOS7中，你可以通过RPM包快速安装所需的软件，以下是如何安装cpanel、winSCP和openvpn-server的命令：

sudo yum install cpanel winSCP openvpn-server

安装完成后,运行以下命令以更新软件包：

sudo yum update

配置软件

安装完成后,你需要配置这些软件的设置。

a. 配置cpanel

打开cpanel，选择“选项” > “网络设置”，设置VPS的域名和IP地址，完成配置后,保存设置。

b. 配置winSCP

打开winSCP，选择“选项” > “连接设置”,确保连接到VPS的IP地址和端口正确。

c. 配置OpenVPN

打开OpenVPN，选择“选项” > “服务器配置”，输入VPS的IP地址和端口，完成配置后,保存设置。

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配置服务器

在完成软件安装和配置后,接下来是配置VPS的服务器设置。

修改/etc文件

在CentOS7中，你可以通过编辑/etc文件来配置VPS的网络设置。

a. 修改/etc/hosts文件

打开hosts文件,添加以下内容：

centos7.example.com centos7.example.com
centos7.example.com 127.0.0.1

这个文件告诉系统，当连接到centos7.example.com时，会自动连接到0.0.1。

b. 修改/etc/sysconfig-l2tp-openvpn文件

打开sysconfig-l2tp-openvpn文件,添加以下内容：

<global>
    l2tp_enabled = true
    l2tp_type = tunnel
    l2tp peeled = true
    l2tp_peeled asymmetric = true
    l2tp_peeled symmetric = true
    l2tp peeled auth = certificates
    l2tp peeled cipher = aes-128-xts
    l2tp peeled key_mgmt = pre-shared
    l2tp peeled keylength = 128
    l2tp peeled ca-certs = /etc(ca-certificates)
    l2tp peeled ca-certs file = /etc(ca-certificates)
    l2tp peeled ca-certs source = https://example.com/keys(ca-certificates)
    l2tp peeled ca-certs source root = true
    l2tp peeled ca-certs expire = 365
    l2tp peeled ca-certs use selfsigned = true
    l2tp peeled ca-certs selfsigned = true
    l2tp peeled ca-certs selfsigned file = /etc(selfsigned-certificates)
    l2tp peeled ca-certs selfsigned file root = true
    l2tp peeled ca-certs selfsigned file expire = 365
    l2tp peeled ca-certs selfsigned file use selfsigned = true
    l2tp peeled ca-certs selfsigned file use selfsigned = true
    l2tp peeled ca-certs selfsigned file selfsigned = true
    l2tp peeled ca-certs selfsigned file selfsigned = true
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