Group items tagged

equence number（序列号）字段：关键字过滤系统很可能会偶而繁忙导致本地出口堵塞，以致RST包发送延迟并晚于真正的源发回的数据包到达客户端PC，造成RST包被客户端PC丢弃，从而整个过滤干预行为失败。考虑到这个因素，伪源还具有序列号预测功能，例如伪源2相邻的3个RST包中该值分别相差1460（以太网默认MSS值）和2920（即1460*2）。

返回的IP一般在一下四个中随机 (四个IP均已被屏蔽）一般返回四个到五个回应报文（害怕用户收不到？） 正常情况下应是一个

向国外任意IP发送敏感的DNS解析请求都将返回伪造的回应报文 无论其是否提供DNS解析服务

In 1972, the seminal book Limits to Growth by a group called the Club of Rome claimed that exponential growth would eventually lead to economic and environmental collapse.

Yet Turner reckons his report [pdf format] shows that a sustainable economy is attainable. "We wouldn't have to go back to the caves," he says.