A good thread with plenty of ideas and information – thanks
alphabeater,
db_,
Scyth and others!
I think it is a good general approach to make p2p clients as unpredictable and adaptive as possible so that their use would be very hard to track, block or control by your ISP or anybody else. Random port selection from user-defined range is a good first measure against mechanical blocking. Fully encrypted communications between peers would be the next natural step. If your ISP has no way of telling what you communicate through protected pipes with other peers, p2p becomes externally indistinguishable from
Virtual Private Networking practiced routinely by many businesses today.
Quote:
Originally posted by alphabeater
looking at the posts above, an interesting set of problems are posed. a way of calculating a port number is needed which:
- is almost random
- cannot be figured out by a peer's isp
- can be figured out by another peer on the network
- is static for use with routers/firewalls
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Point 2 fails on open networks because of point 3: your ISP – just like Hilary Rosen and Jack Valenti – is free to enter any open network as a normal peer and access the same information as any other peers, making possible port-sniffing bots etc.
- tg
