How to scan ports through forwarded NAT port?

Question

Network administration

Is it possible to port scan a host if it is behind a router? At the same time, on the router, the port is forwarded to the desired ip.
If so, how?

Answer 1

nmap.org/man/ru nmap scanner itself will scan ports for you on the IP or host and show which ports are open, but what to scan if there is forwarding to another machine, this will not work