The site from the external white IP does not open from the local network, although everyone sees it from the Internet and it is not clear why I cannot open it from the local area?

Question

Computer networks

Question and details.
There is an Apache server at the address 192.168.0.32
Everything works correctly when accessing the address 192.168.0.32
On the router, the DMZ server is forwarded to the Apache i.e. on 192.168.0.32
everything goes fine from the internet and people connect via a white dedicated ip like 78.138.xxx.xxx to the address 78.138.xxx.xxx from a local laptop with the address 192.168.0.20, there is no answer and writes that the seraer was not found, but the router knows that it should send me back to the local area to the address 192.168.0.32 using this ip , but that doesn't happen.
I can't figure out what the problem is.

Answer 1

spw.ru/solutions/natpart5