reverse proxy with dns control

[arx]

Hi guys,

for security problems on my server, I should create a reverse proxy that
allows only those who use the dns provided by me to be able to pass.
practically I make a list with the incoming dns and I pass only those to my
main server behind the reverse.
is it possible to do this?
thank you all

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,293951,293951#msg-293951