这种加密应用到所有的IP数据包，而不会根据应用程序或服务调用情况进行启用或禁用。

This encryption is applied to all IP packets and is not enabled or disabled on a per application or per service invocation basis.

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当从客户机发来新的TCP连接时，数据包设置了SY n位，服务器就为这个半开的连接创建一个条目，并用一个SYN - ACK数据包进行响应。

When a new TCP connection comes in from a client by means of a packet with the SYN bit set, the server creates an entry for the half-open connection and responds with a SYN-ACK packet.

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YQL 使用表定义将查询数据转化成一个 XML 编码的数据包，之后通过 POST 将该数据包提交给 Wordpress.com web 服务。

YQL uses the table definition to convert the query data into an XML-encoded packet that is submitted, through POST, to the Wordpress.com web service.

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