近期不少站点管理员发现，网站流量出现明显波动，排查后发现一个常被忽视的环节——禁 ping。所谓禁 ping，就是在服务器安全设置中屏蔽了 ICMP 协议，导致搜索引擎的爬虫服务器无法通过 ping ...

Ping a website or another online server to test your computer's connection to that computer and measure the time it takes for data packets to travel there and back. By default, the ping command sends ...