duckdns.org pointing to Tun0 address provided by openvpn configurated by portmap.io in TCP for port 80 (my PC) and 53466 port of portmap.io.
Apache and Ubuntu is the PC. If i write domain.duckdns.org on address bar i see:
if from my PC -> everything go well, i can see the content of apache;
if from a device outside the local network or even in a machine inside the local network -> a timeout message and no page loaded.
if i write http://namevpn-56435.portmap.io:56435 that is the URL generated by portmap.io, i can see the page.
Why? where is the problem? Is an apache configuration? there some problems with portmap.io or virtual-hosts?
Everything seems to be configured well, in theory... please help me to reach the machine from port 80.Thanks