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Re: Access to the IPv4 net for IPv6-only systems, was: Re: WG Action: Conclusion of IP Version 6 (ipv6)

  • From: Iljitsch van Beijnum
  • Date: Tue Oct 02 10:03:16 2007

On 2-okt-2007, at 15:05, Adrian Chadd wrote:

Please explain how you plan on getting rid of those protocol-aware plugins
when IPv6 is widely deployed in environments with -stateful firewalls-.

You just open up a hole in the firewall where appropriate.

You can have an ALG, the application or the OS do this. As you probably know by now, I don't favor the ALG approach.

End-to-end-ness is and has been "busted" in the corporate world AFAICT
for a number of years. IPv6 "people" seem to think that simply providing
globally unique addressing to all endpoints will remove NAT and all
associated trouble. Guess what - it probably won't.

If you don't want end-to-end, be a man (or woman) and use a proxy. Don't tell the applications they they are connected to the rest of the world and then pull the rug from under them. This works in IPv4 today but don't expect this to carry over to IPv6. At least not without a long, bloody fight.