Forwarding a route to the local network?

Question

Computer networks

There is a router number 1 connected to the Internet, external ip: 128.204.5.10, ip address of the internal network
192.168.1.0/24 address: 128.204.5.10, can I access computers located in the local network of router No. 1 ???
I know about dmz and port forwarding, please do not suggest using them)

Answer 1

In routers, by default, the firewall does not allow forwarding traffic from the WAN port - because it is not safe.
If there is a VPN on the router, then it is better to use it - connect to the VPN from the Internet and through it you can see the entire internal network (this is configurable).

Answer 2

Use a VPN server on a router or inside a local network. OpenVPN is best, SoftEther VPN can be.

Answer 3

where are the netmasks?
if the server and router are in the same L2 network, then you can

Answer 4

If you can disable NAT on the router when passing packets from / to the address 128.204.5.10, then everything will work.