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Linux Firewalls: How to Actually Secure a Cloud Server (iptables, nftables, firewalld, ufw)
(blog.hofstede.it)
this post was submitted on 12 Jul 2026
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I mean, if you don’t have a firewall on the device itself then your router certainly does, your device requests xyz port open your router will oblige with UPNP unless explicitly denied.
The on-device firewall is just an extra step before it hits your router’s firewall anyways, I’m sure your devices have made contact with servers behind your back that you know nothing about.
I absolutely agree that additional security layers are useful and even necessary. A software firewall on the device itself just isn't one of them. For me.