Which is better for Seafile server, DMZ or Virtual Hosting?

I’ve learnt that there are two kinds of NAT technologies named DMZ (Demilitarized Zone) and Virtual Hosting (or called Port Mapping or something else)? What’s the difference between the two? Which is better for building a Seafile server? Thanks!

DMZ = all ports are open and can reach the server, security level is not the best
Port Mapping = you only open the ports you need to use your software, it’s more secure
Seafile once configured HTTPS only needs port 443

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I see. Thinks!

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