[Tech] [freenet-dev] Easier reference swapping

[Colin Davis]

I'm sorry that I'm being dim-
Could you please explain how the network topography is exposed? I'm sure 
you're right, I'm just missing it.





If we have two clients, A and B, who want to talk to one another.. Both 
are behind Firewalls..

* A calls up B, and tells him "Connect to me, at 11.22.33.44, password 
'Bob is a super cool password'"

* B Says sure, and clicks the "Connect to a new client" icon in Fred, 
enters the IP and Password.

* B's machine starts sending Freenet packets to A, thus opening up a NAT 
hole to his machine through the UDP trick.

* B then tells A "It's running! Add my computer back. Mine is 
22.33.44.55, and the password is 'Donkeys are really cool, and I like 
the way they look' "

* A adds B's IP and password, and starts sending freenet packets to B.
* A's machine is now exposed, through the UDP trick.

* B's packets, which he is still sending, get through.
* A's packets get through to B.

* Now that they're talking, they exchange signed keys (real noderefs), 
so next time, they don't need to do the passwords.

* Fred disables the passwords.

Nothing has required the use of a third party, other than the telephone 
call between the two of them to share the passwords.

-Colin




>> When Side-A added the noderef of B, it would start sending out packets 
>> to B, knowing that they won't get returned.. But the Sending of these 
>> packets would open a NAT-hole..
>> Then, Side-B would get around to adding the noderef of A, and start 
>> sending packets to A, opening a NAT-hole on their own side.. Side A's 
>> packets then get in through this hole, just as B's now arrive at A.
>>
>> What am I missing?
>>
>> -Colin
>