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Re: Block hidden services

Am 29.08.2008 um 07:15 schrieb F. Fox:

xiando wrote:
is it - in analogy to exit policies - possible to block certain (or
all) hidden services of using my node as directory or introduction
point and to disable rendezvous point functionality for my node? (I
understand that I cannot block being a rendezvous point for specific
hidden services.)

If not, I vote for such a feature.

I strongly disagree with your vote for such a feature. There may be
anonymity issues involved. Your refusal to have involvement with hidden
service introduction may ease the adversarys attempts to locale my
hidden service and identify me as the operator.

I cannot follow how this shall be possible, can you elaborate this? The exit policies allow me as a tor node operator not to offer connections to certain IPs. In the same way I should have the possibility not to offer services for certain hidden services as long as I can identify them (that is directory and introduction point services).

I want to point out, that there are hidden services which are (at least) anonymity issues by their own.

At the very least, such a new feature - if introduced - should be
opt-in; by default, a node should have the ability to be an introduction
or rendezvous point.

I'm fine with that. But I think it's not fair to force Tor operators, that want to offer their resources for anonymous access, to automatically support hidden services as well. They are to different services and should be decoupled. So at least an option to switch off hidden service functionality is needed. But I prefer a flexible option like the one above.



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