bad exit blacklisting

slush slush at centrum.cz
Thu Oct 23 21:41:11 UTC 2008


Hi all,

as far as I read Tor documentation, I cannot find mechanism, how can be exit
node marked as "Bad exit". Is there any standardized mechanism for detecting
bad exits and marking them in directory servers?

I found one man's activity on tor forum (
http://xqz3u5drneuzhaeo.onion/users/badtornodes/index.html) as simple
detector of corrupted nodes, but as I see, it is a little bit amateur
(checking of static pages, manual checking of errors) and there is no
integration with directory servers.

Im asking because Im working on automatic bad exit detection and Im
interesting, how it can be automatically propagated for wide masses of tor
users. Instead of "BadTorNodes page" author, im not paranoid with used
algorithm and I can publish source codes (after confirmation on live data).

Bye,
Marek
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