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Think for one moment: how utterly screwed the internet would be if the majority of consumer computer equipment wasn't behind NAT by default?
by ctz 9y ago
Think for one moment: how utterly screwed the internet would be if the majority of consumer computer equipment wasn't behind NAT by default?
- the8472 9y agoThat's already reality with IPv6 and the sky is not falling because instead of NAT the router boxes provide (simple) firewalls. The downside is that they yet again break P2P protocols, although that's somewhat easier to fix.
- snuxoll 9y agoJust fine? NAT at the end of the day is a glorified stateful firewall, but it's even worse because of the overhead of mapping (src, port) pairs to other (src, port) pairs and the mess of rewriting packets (which breaks in really fun way with protocols like SIP). You can get the same protection NAT offers for IPv6 with an incredibly basic set of firewall rules, only allowing devices on the LAN side of the connection to establish connections and punching holes where necessary.