[tor-relays] Close friend

[Christian Gagneraud]

On 18/08/2014 4:26 p.m., Rex Wolf wrote:
> On 17/08/2014 9:11 PM, IceFish ThreeTwo wrote:
>> I'm pretty sure I read somewhere that the Family option in torrc is
>> used so that nodes administrated by the same person never make a
>> circuit with each other, which somehow protects anonymity. Should my
>> friend and I put each other's fingerprints in the Family field? Seems
>> logical since we know each other and if the point of theFamily field
>> is to protect anonymity.
>
> Hi IceFish,
>
> The MyFamily option is what you've described--an option used so that
> nodes administered by the same person / entity will only be used once in
> any given circuit (other nodes from the same family will not be used in
> the same circuit).
>
> This isn't so much to protect your anonymity as a relay operator, but to
> limit any one client's potential vulnerability. For example, if one
> relay operator happens to control both the guard node and the exit node
> in a circuit, they can correlate the timing of packets entering and
> exiting the network, and determine both a person's identity and the
> content of their traffic.

On the other hand, if I'm a bad guy who as lot of entry and exit nodes, 
I will certainly not disclosed it by using a "MyFamily" flag...

Chris

> You and your friend may know each other, but unless you both administer
> each other's nodes, I don't think you would need to use the MyFamily option.
>
>   -Rex
>
>
>
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