State the use of 6 flags in TCP header.

State the use of 6 flags in TCP header.
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1 Answer

Answer :

There are 6, 1-bit control bits that control connection establishment, termination, abortion, flow control etc..

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1) URG: Urgent pointer

If this bit field is set the receiving TCP should interpret the urgent pointer field.

2) ACK: Acknowledgement

If this bit field is set the ACK field described earlier is valid.

3) PSH: Push function

Request for push

4) RST: Reset the connection

If this bit is present it signals the receiver that sender is aborting the connection i.e. Reset the connection.

5) SYN: Synchronize

When this bit field in present then the sender is attempting to „synchronize‟ sequence numbers

6) FIN: No more data from sender. If this bit is set then it terminates the connection.

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