Can't access a computer connected to the same network?

Question

Burglary protection

I decided to learn how to access remote computers. I read the article . I know the ip of this computer, but when I write ping ip(ip of this computer), no packets are returned?

Answer 1

This article is written complete nonsense, which can only work if the Windows computer was installed by a non-fumbling student in 2000-2003.
Today, even windows7 installed with crooked hands is not hacked like that.
And you need to read a lot more. About networks, about firewalls, about IP types (read special IP addresses on Wikipedia)