1.检测ppp是否开启： cat /dev/ppp 开启成功标志：no such file or directory/device or address 2.安装iptables,ppp,pptpd: yum install ppp iptables pptpd 或者：yum install epel-release||yum install pptpd 3.配置pptpd.conf vim /etc/pptpd.conf #去掉localip和remoteip的注释 loc