日本久久成年视频

A TCP connection is a quad, and a connection is uniquely determined by the source IP, the source port, the destination IP and the destination port. Therefore, if C wants to forge the packet from A to B, it should fill in the above-mentioned IP header and TCP header with the source IP, source port, target IP and target port. Here B is the server, IP and port are open, A is the target we want to attack, IP certainly knows, but the source port of A is not clear, because it may be randomly generated by A. Of course, if we can find out the rule of generating source port for common OS such as Windows and Linux, we can still do it. In addition, we can step on the connection port of Car A through a large number of controlled hosts.開かずの踏切 石田純一 野村真美(2) Instruments, equipment and facilities suitable for the maintenance and testing business scope of fire fighting facilities;青山书院的学子们也都被他感染得沸腾起来。短短一瞬间，吴明却像是度过了几千年。