January 2008
Intermediate to advanced
624 pages
14h 16m
English
Content preview from Windows Server® 2008 TCP/IP Protocols and Services
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TCP Connection States
A TCP connection exists in one of the states listed in Table 11-1.
Table 11-1. TCP Connection States
State | Description |
|---|---|
CLOSED | No TCP connection exists. |
LISTEN | An Application Layer protocol has issued a passive open and is willing to accept TCP connection attempts. |
SYN SENT | An Application Layer protocol has issued an active open and a SYN segment is sent. |
SYN RCVD | A SYN segment is received and a SYN-ACK is sent. |
ESTABLISHED | The final ACK for the TCP connection establishment process is sent and received. Data can now be transferred in both directions. |
FIN WAIT-1 | The initial FIN-ACK segment to close one side of the connection is sent. |
FIN WAIT-2 | The ACK in response to the initial FIN-ACK is received. |
CLOSING | A FIN-ACK is received but the ACK is ... |
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