时间同步服务器chrony+PPTP

chrony配置：

systemctl stop ntpdate.service ntpd.service
systemctl disable ntpdate.service ntpd.service
yum install -y chrony
vim /etc/chrony.conf
systemctl restart chronyd.service
systemctl enable chronyd.service

• PPTP安装配置

curl -o /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
yum -y install pptpd
#vim /etc/pptpd.conf
#localip 本机公网IP
#remoteip 分配给vpn客户端的地址，一般是内网网段地址
#localip 10.0.0.62
#remoteip 172.16.1.100-110
sed -i '$a localip 10.0.0.62\nremoteip 172.16.1.100-110' /etc/pptpd.conf
# 添加VPN登陆用户
#vim /etc/ppp/chap-secrets
#oldboy * 123456 *
sed -i '$a oldboy * 123456 *' /etc/ppp/chap-secrets
systemctl restart pptpd.service
systemctl enable pptpd.service
#设置内核转发让你直接访问内网服务器
echo "net.ipv4.ip_forward = 1" >> /etc/sysctl.conf 
sysctl -p

• VPN企业案例:记录登录用户名日志

cat /etc/ppp/ip-up
…………
echo "$PEERNAME 分配IP: $5 登录IP: $6 登录时间: `date -d today +%F_%T`" >> /var/log/pptpd.log
exit 0

cat /etc/ppp/ip-down
…………
echo "$PEERNAME 下线IP: $6 下线时间: `date -d today +%F_%T`" >> /var/log/pptpd.log
exit 0