learning and teaching (37)

https://wodewangzhishime.blogspot.com/2022/01/one-day-leopold-holding-bottle-of.html

.

Ref:https://wodewangzhishime.blogspot.com/2022/06/httpswodewangzhishime.html

.

.

1) Jian@police_hk.org (server_ip, 133.133.133) <--- server_ip 133.133.133 belong to the government of

.

2) Jian@police_hk.org (server_ip, 235.235.235) <---- Kelvin hack the dominan name server and then temporarily bind jian@police_hk.org to 235.235.235 which belong to Kelvin.

.

.

John: server_ip 133.133.133 belong to the government of Hong Kong. However, server_ip 235.235.235 belong to Kelvin.

Me: Ok.

John: One day, I went to the police station. I said I'm being "surveillanced". Mr. Jian is the police who saw me. Guess what happen ?

.

_________

.

Kelvin : Yesterday, John came to the police station.

Mr. Jian: Yes,. He said, he is being surveillanced.

Kelvin : You're better tell John, "I'm not interested in your case".

Mr. Jian: How do I tell him, "I'm not interested in your case."?

Kelvin : You send him an email.

Mr. Jian: Jian@police_hk.org belong to police force of Hong Kong.

Kelvin : So?

Mr. Jian: So,. Every email must leave a record in the server of the government.

Kelvin: You are childish. I hack the server of domain name and I rebind Jian@police_hk.org to my server. No record of email is left in the server of the government.

Mr. Jian: You are genius.

.