.


:




:

































 

 

 

 


TCP




 

, .

, , . , .

, (sequence number) . , - , . . - (acknowledgement, A) (. 40).

, . , - . , .

. , , (protocol port number). , F- -, .

0 65536. .

. (socket) . , , : IP-c , ( UDP ) , .

. . , 256, .

  FTP
  Telnet
  (DNS)
  NetBIOS

 

. - . , , , . (. 41)

1. - , (SYN).

2. - , ; :

- ;

- , ] , (sequence number);

- , , .


-


. 41


3. ] (acknowledgement number).

. , .

. , (sliding windows). / IP- : , . , .

-. - . -.

Sourse Port ( ) -
Destination Port ( ) -.
Sequence Number ( ) .
Acknowledgement Number ( ) ,
Data Length ( ) -
Reseved ()
Flags ()
Windows () ,
Checksum ( ) ,
Urgent Pointer ( ) ( Flags),

 





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