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Accessing the 6BONE through NAT
Authored by: john_e on Mar 19, '03 04:51:41AM

In my opinion, there ARE such things as non-evil NATs. I run a NAT for example, and it works great. I run a webserver and mailserver, and I only have one static IP. I just let my old Cube run the Network Address Translation Daemon (natd), and also automatically forward most ports to my PowerBook G4s internal IP. This means I can host a game of Ghost Recon on my PB G4 with the internal address (in the 192.168 space) and people from outside can join.

I don't know much about IPv6, but as far as I can tell 6to4 seems to be more like a protocol which uses a standard port (41?) to send packets encoded in a special way (like AppleTalk over TCP/IP). When a 6bone router receives this packet, it decodes it and sends it out on the 6bone.
Since you made the connection through your NAT, the NAT knows that it should return packets on the OPEN port (whatever, say 31000) to your computer with the internal address.

So, correct me if I'm wrong but a NAT shouldn't be that big of a problem really. Better with REAL IPs, sure, but since they're in short supply (until 6 has replaced 4) a NAT can sometimes be a solution.



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