On 16 Aug 2017, at 14:22, tor tor@anondroid.com wrote:
Note that most clients use the ORPort for fetching directory stuff, and that's heading towards "all clients" as people upgrade and stop using weird configurations.
If you're worried about denial of service issues on the DirPort, maybe the simple answer is to turn off the DirPort? I think the only real impact might have something to do with whether old clients believe that you're a usable guard.
What about fallback directory mirrors? Does fallback traffic go over the ORPort too?
Bootstrapping clients always use the ORPort to talk to fallbacks. (Both features were introduced in 0.2.8.)
Bootstrapping relays use the DirPort to talk to fallbacks.
Is it safe to disable the DirPort on a fallback relay?
If you disable the DirPort, the fallback will be excluded when we next rebuild the list.
We are working on ORPort-only fallbacks, but it's low priority, because the existing system works.
To make it work, we need to: #18856: teach stem to talk ORPort so we can check the fallback, and #19129: modify the fallback checking script to allow ORPort-only fallbacks
T
-- Tim Wilson-Brown (teor)
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