My question was closed for being off topic. The reason stated by the moderator was that "This is not a security issue. This is pure TCP/IP".
I feel it is reasonable to consider my question in the security category, as the whole scenario is about protecting the network from outside attacks.
I even found there were technical names for this attack : IP-spoofing and blind session hijacking. This furthers the case in my mind for the question to be security related.
Can someone with more time than the moderator could kindly explain either 1) why I am mistaken and this question is "pure TCP/IP" or 2) what is the best course of action in my case to have my question reopened.
EDIT : my question was re-opened and immediately closed for a different reason : being a duplicate. So I guess that implicitly answers my question here : it was indeed on topic (since it was already asked and answered).
I would make the humble suggestion to have a different process when this happens.
The process :
- question closed for reason A
- discussion with the mod in which I argue that reason A is incorrect
- mod disagrees strongly, repeats his argument
- later, mod re-opens and closes the question for a different reason (I am guessing - but not sure - that the same mod did this)
could be perceived from the asker as coming from an unreasonable desire to close that question from the mod, who did not like being challenged. I am sure that's not what happened here, but a humble suggestion for improvement would be that the mod acknowledges his mistake/provides an explanation before re-opening and closing for a different reason. This could be perceived for doggedness (I hope that's the right word), and I know we all want to avoid that perception, and make all stack exchange sites friendly places for everyone to interact.
EDIT 2 : After careful review of the links for duplicate, I realize the reason “being a duplicate” is also incorrect. In my question I am suggesting that only 1 tcp or udp packet from the attacker is seen, received and processed by the computer in the network. Not that the response from the computer is received by the attacker. You can do some damage with only 1 packet if you are being crafty. The 4 other questions ask whether a connection can be established, or whether the response can be sent to the attacker.