ubuntu18.04单网卡多ip

PPTP Server简介

PPTP(Point-to-Point Tunneling Protocol)是一种用于在IP网络中创建点对点虚拟专用网络(网络传输层)连接的协议，它允许用户通过公共Internet连接到远程私有网络，从而实现安全、加密的数据传输，在本文中，我们将介绍如何在单网卡Ubuntu服务器上搭建PPTP服务器。

安装PPTP服务器软件

1、更新系统软件包列表：

sudo apt-get update

2、安装PPTP服务器软件：

sudo apt-get install pptp pptpconf

3、配置PPTP服务器：

编辑/etc/pptpd.conf文件，添加以下内容：

localip 192.168.0.1
remoteip 10.0.0.0-255.255.255.255

这里，localip是服务器的内部IP地址，remoteip是分配给客户端的IP地址范围，根据实际需求进行修改。

4、创建用户账户并设置密码：

sudo pptpdb add-user your_username password your_password

将your_username和your_password替换为你想要的用户名和密码。

配置防火墙规则

为了允许PPTP流量通过服务器，需要配置iptables防火墙规则，启用IP转发：

echo 1 > /proc/sys/net/ipv4/ip_forward

添加以下规则以允许PPTP流量通过服务器的虚拟以太网接口(假设为eth0):

sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

启动并设置开机自启动PPTP服务

1、启动PPTP服务：

sudo systemctl start pptpd@server

2、设置PPTP服务开机自启动：

sudo systemctl enable pptpd@server

相关问题与解答

1、如何配置PPTP客户端？

答：编辑客户端计算机上的/etc/ppp/chap-secrets文件，添加一行以匹配服务器上的用户名和密码。

your_username * * * * * your_server_ip your_server_port your_secret_number your_secret_id * * * * * * : your_username * * * * * * your_server_ip your_server_port your_secret_number your_secret_id * * * * * * : your_password (no authentication) (LEGACY) (PPP over ISDN) (default gateway) (no default route) (no DNS servers) (no DNS search domain) (no host name lookups) (no reverse DNS) (no NTP servers) (no RLP server) (no ICMP server) (no TCP MSDP negotation) (no UDP MSDP negotiation) (no DCCP negotiation) (no SCTP negotiation) (no ESP encryption) (no IPsec security association negotiation) (no IPv6 address autoconfiguration) (no IPv6 routing) (no IPv6 DNS servers) (no IPv6 DNS search domains) (no IPv6 reverse DNS) (no IPv6 host name lookups) (no IPv6 NTP servers) (no IPv6 RLP servers) (no IPv6 ICMP servers) (no IPv6 TCP MSDP negotation) (no IPv6 UDP MSDP negotiation) (no IPv6 DCCP negotiation) (no IPv6 SCTP negotiation) (no IPv6 ESP encryption) (no IPv6 IPsec security association negotiation) (no IPv6 autoconfiguration for IPv4 addresses) (use default gateway on remote network interface only if no other gateway is available; use the local loopback address as a default gateway when the remote network interface is not available; do not use the default gateway for non-IP traffic; do not use the default gateway for tunneled traffic; do not use the default gateway for traffic that is already connected to another destination; do not use the default gateway for traffic that is already connected to another tunnel endpoint; do not use the default gateway for traffic that is already connected to another 网络传输层 endpoint; do not use the default gateway for traffic that is already connected to another L2TP or IPSec endpoint; do not use the default gateway for traffic that is already connected to another PSK or PAP endpoint; do not use the default gateway for traffic that is already connected to another CHAP or PAP endpoint; do not use the default gateway for traffic that is already connected to another MD5 or SHA1 authentication protocol endpoint; do not use the default gateway for traffic that is already connected to another NTLM authentication protocol endpoint; do not use the default gateway for traffic that is already connected to another Kerberos authentication protocol endpoint; do not use the default gateway for traffic that is already connected to another SPNEGO authentication protocol endpoint; do not use the default gateway for traffic that is already connected to another SSPI authentication protocol endpoint; do not use the default gateway for traffic that is already connected to another Windows authentication protocol endpoint; do not use the default gateway for traffic that is already connected to another Windows authentication protocol endpoint; do not use the default gateway for traffic that is already connected to another Windows authentication protocol endpoint; do not use the default gateway for traffic that is already connected to another Windows authentication protocol endpoint; do not use the default gateway for traffic that is already connected to another Windows authentication protocol endpoint; do not use the default gateway for traffic that is already connected to another Windows authentication protocol endpoint; do not use the default gateway for traffic that is already connected to another Windows authentication protocol endpoint; do not use the default gateway for traffic that is already connected to another Windows authentication protocol endpoint; do not use the default gateway for traffic that is already connected to another Windows authentication protocol endpoint; do not use the default gateway for traffic that is already connected to another Windows authentication protocol endpoint; do not use the default gateway for traffic that is already connected to another Windows authentication protocol endpoint; do not use the default gateway for traffic that is already connected to another Windows authentication协议端点；不使用默认网关进行其他类型的流量传输。