[Transport] TCP (3/3)

Connection

 

FTP

연결 시도 & 연결 응답 : Port Number

 

3-Way Handshake

Flag : SYN > ACK > SYN,ACK > ACK

 

Terminaion

 

4-Way Termination

Flag : FIN,ACK > ACK > FIN,ACK > ACK (of FIN)