CGN fixed/hashed nat question

William Herrin bill at
Wed Jan 23 22:53:47 UTC 2013

On Wed, Jan 23, 2013 at 10:54 AM, Simon Perreault
<simon.perreault at> wrote:
> Le 2013-01-23 16:37, William Herrin a écrit :
>> In fact, were someone to use those "worst current practices" to build
>> some generic p2p VPN software, even old games could leverage it to
>> allow someone behind a CGN to host.
> A CGN that obeys these requirements will allow NAT traversal by virtue of
> having an Endpoint-Independent Mapping behaviour. That is the BCP. Not port
> prediction.

Even better. So, architecturally P2P compatibility with CGNs is a
solved problem waiting only for the software to shake out. Expect some
growing pains in the first generation CGNs which largely vanish in the

Bill Herrin

William D. Herrin ................ herrin at  bill at
3005 Crane Dr. ...................... Web: <>
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