sequential (5)

https://wodewangzhishime.blogspot.com/2021/09/httpswodewangzhishime_42.html

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Ref: https://wodewangzhishime.blogspot.com/2021/09/httpswodewangzhishime_42.html?m=1

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Me: In microsoft, there isn't any real port . . In Microsoft, there is a "network buffer zone". . I call network buffer zone as register_a;

If value of register_a start from

1) 0101 , it is the port of apache. 

2) 0000 , it us the port of Internet explorer. . 

3) 1111 , it is the port of Mysql.  

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John: That mean, they are not real port of  in and out. They are virtual port under register_a.

Me: Yes, It is dangerous. . Originally , the value of the register_a start from. 0101 which is the virtual port of internet explorer. .  Suddenly, hacker change 0101 into 1111. .Consequently, it become the virtual port of Mysql.

John: The connection which is based on the value of register_a is called virtual connection.