How to get to your server through an external ip address while on the same network as the server?

Question

linux

I have a home server with a bunch of services I need, including Seafile file synchronization.
On a laptop, I have to switch the domain from external to internal when I return home, due to the fact that when I go to an external address inside the local network, it transfers to the router's web face.
The router is running OpenWRT.
How to correctly set up a rule for traffic in OpenWRT?

Answer 1

I solved the problem very simply, maybe /etc/config/firewall will help someone too

config redirect
        option enabled '1'
        option target 'DNAT'
        option proto 'tcp'
        option src_dport '80'
        option dest_ip '192.168.1.5'
        option dest_port '80'
        option name 'dnat_80_rule'
        option src 'lan'
        option src_dip 'x.x.x.x'
        option dest 'wan'