#33450: Create a guide to help web site owners mitigate abuse from Tor without
blocking non-abusive Tor users
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Reporter: jnewsome | Owner: hiro
Type: defect | Status: new
Priority: Medium | Milestone:
Component: Webpages/Website | Version:
Severity: Normal | Keywords:
Actual Points: | Parent ID:
Points: | Reviewer:
Sponsor: |
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Specifically we need something that a blocked Tor user can point a
site/service owner to. Today the most discoverable version of this on the
main site is https://support.torproject.org/#censorship-2, which
essentially boils down to just asking the owner to not block Tor out of
altruism, without offering any technical detail or support.
Ideally such a page would help the owner determine how they're blocking
Tor users in the first place (CDN configuration? Firewall? Website
plugin?), and help them understand what their alternatives are.
As a first pass, such alternatives might include:
1) If the traffic isn't known to actually be causing harm, just don't
block it. This may be the right solution if the exit node(s) were being
blocked based on volume of traffic rather than any actual problem that
traffic was causing. If there's a per-IP-address rate limit, consider
raising it for known exit nodes.
2) Slowing down abusive Tor users by blocking Tor circuits, e.g. using
CloudFlare's onion integration or
https://github.com/alecmuffett/eotk.
3) PrivacyPass or other proof-of-work per browser rather than per IP
address.
4) Application-level mitigations.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33450>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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