![]() ![]() So, the client sends a packet with SYN bit set. The client wants to initiate a connection to the server (93.184.216.34). The following sequence shows the process of a TCP connection being established. Why the client(localhost.58952) don't send back the ack(value 1) to server (localhost. The reason being is that three segments are exchanged between the client and the server for TCP connection to be established. Tcpdump: verbose output suppressed, use -v or -vv for full protocol decode ![]() 1、open tcpdump command sudo tcpdump -i lo0 tcp port 20009ģ、connect 20009 port telnet localhost 20009Ĥ、 tcpdump command got : ○ → sudo tcpdump -i lo0 tcp port 20009 ![]()
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