Hello All,

A couple of days back , a friend and I we were discussing about the
differences between Half-open , Half-closed and embryonic TCP connections :

We got a couple of confusing definitions :

1) From cisco

> These half-open connections are TCP connections that have not completed the
> SYN-SYN/ACK-ACK handshake that is always used by TCP peers to negotiate the
> parameters of their mutual connection.


2) RFC 793 ( TCP )

An established connection is said to be  "half-open" if one of the

  TCPs has closed or aborted the connection at its end without the

  knowledge of the other, or if the two ends of the connection have

  become desynchronized owing to a crash that resulted in loss of

  memory


Can someone please shed some light on this? Thanks!


Cheers,

TacACK
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