CGNATs suck ass though, I had to buy a vps just to access my own network outside my home.
this post was submitted on 01 Aug 2025
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C’mon, IPv4 has so many problems. Sure, let’s reserve a whole /8 for a single loopback address, that’s efficient. 🙄
Well of course, how else would you trick script kiddies that figured out when they DDOSed 127.0.0.1 and learned what a loop back was, and get them again in a few weeks with "ok ok my real address is 127.34.21.2"
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(4 replies)
Hi I have no idea what I’m doing when it comes to networking. I have ipv6 off on my home network because I was scared of accidentally exposing things outside of my home network. I’m using Ubiquiti. Can someone give me/link me a crash course on how to setup ipv6 without introducing any security holes into my network? Maybe also a crash course in firewalls.
i don't use ubiquiti, but the only thing you need to do with your firewall to get better-than-NAT security is allow only outgoing connections/disallow incoming connections. usually on consumer routers that's the default setting anyway or there's a checkbox to that effect.
Block new connections inbound on the router's wan. Also block ping if you don't want pings to find you. That's the most basic setup for firewalling on the udm, ipv4 and 6. Every router in 2025 should be able to block new inbound on ipv6.
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I have never started using ipv6 so I'm in the clear here