网站ping不通解决笔记！

网站突然无法访问，以为是老问题，就重启nginx发现无用，连php也重启了，还是不行，最后重启了服务器，还是无用。关了防火墙试试？还是不行，问题出在哪呢？宝塔还是可以访问，为何网站不行呢？高仿到期了，域名解析从CNAME改回服务器IP？改回来还是不行，嗯，提个加急工单试试吧，刚提了工单，猛然间想到了，高仿设置了回源IP，禁止直接访问源站IP，必须经过他们高仿回源IP。现在高仿到期未续费，可能问题出在这，然后更改入方向规则，网站立马可以访问了！(ˉ▽ˉ；)...

网站打开显示如下：

Unable to round-trip http request to upstream: 
read tcp 192.168.1.117:5461->47.110.xxx.239:80: 
wsarecv: A connection attempt failed 
because the connected party did not properly respond after a period of time, 
or established connection failed because connected host has failed to respond.

在本机和服务器ping域名和IP均不通：

C:\Users\Administrator>ping 47.110.xxx.239

Pinging 47.110.xxx.239 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 47.110.xxx.239:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

C:\Users\Administrator>

删除高仿回源IP，安全组规则入方向改授权策略禁止为允许，端口80/443，授权对象0.0.0.0/0

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