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Honest question - what would I use UPnP for?

I discovered a similar issue as the blog poster with my QNAP NAS which was easily remedied by disabling UPnP.

I’ve not noticed any issues. We can do all the same things we did before. My Xbox and Switch still do online multiplayer just fine.

I remember hearing Xbox/PS3-4 and UPnP mentioned together but it’s been a while.

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UPnP allows devices to open up firewall ports for themselves to allow traffic to reach them inbound. Games (for example) that that host a server on the users local machine may require an open port to allow access inbound so UPnP can help with this.

Now-a-days it's not used much and quite frankly it was always a fairly bad idea.

Nowadays you should use IPv6 anyway, which doesn't need NAT.

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