Transmission

Good morning from Greece.
I need some help for full encryption.

--> @ Encryption mode i have 3 choices: Allow Encryption, Prefer, Require. I thing the "Require Encryption" is this for "full" encryption, right?
--> Also there are two other checkboxed: "Use PEX to find more peers" and "use DHT to find more peers". What should do this those checkboxes?

To give you an example, @ my mtorrent client (windows) my setting are those:



I have Forced the encryption and "allow incoming legacy connections" checkbox, unchecked
I thing the "forced" @ mtorrent is the same with require encryption @ transmission. Am i right?.

If by "full" you mean only encrypted peers then yes, you are correct.

DHT and PEX are parts of a system to find more peers without relying on a tracker and has nothing to do with encryption itself, they are very good at adding peers when there are no trackers available. Unless you have a fairly low transfer quota from your ISP then you can leave them on, they generate some traffic even if there are no active torrents.

If by "full" you mean only encrypted peers then yes, you are correct.

Yes that i mean.
So thew only thing that matter is to have the encryption mode set to "Require Encryption", right?
One other thing. the azureus client have a choice for encryption level (plain and RC4), also there is another checkbox for "cryptoport" to avoid plain incoming connections.
Those settings doesnt exist for transmission huh?
Arent important or what?

I haven't read up on the bittorrent protocol but I take it that "plain" encryption isn't worth bothering with. As for the port as far as I know there is no defined way to tell other clients to make encrypted connections on one port and non-encrypted on another.

x190 wrote:Transmission normally uses RC4, however I think there may be certain circumstances where plaintext would be used for a DHT handshake.

This sounds very bad, where can I verify what sort of traffic Transmission doesn't encrypt (or doesn't encrypt without enabling "forced" encryption)?

P.s.: Older messages couldn't tell anything definite about DHT.

Jordan wrote: To clarify a misconception -- Deluge and Transmission both have RC4 based encryption, same as Vuze. The encryption spec for BitTorrent is well-defined and implemented by all the major players.

x190 wrote:

I know I insist a little bit ^^ but if the encryption is set to required encryption I'm sure that all exchanges (peers ) are encrypted ?

Peer to peer communication, yes, but not trackers and DHT. Actually I'm not 100% sure about DHT, so maybe someone else will provide a definite answer.

P.p.s.: Adnan claims:

This is client-specific. A while ago, I've analyzed uTorrent and Transmission, they both use encryption for DHT/PEX (if enabled and forced). Many other clients have encryption enabled, yet they allow legacy connections (non-encrypted).