[tor-relays] Grouping cloud relays running within same provider

Paul Staroch paulchen at rueckgr.at
Fri Apr 18 20:02:33 UTC 2014

Am 2014-04-18 21:31, schrieb mr.curtis at urssmail.org:
> Is there any way currently to do this, or are there already some
> safeguards in place?

In its default configuration, Tor ensures that each relay in a circuit belongs to another /16 subnet (cf. Tor Path Specification [1], section "2.2. Path selection and constraints"). However, in the case of Amazon EC2, this constraint does not suffice as Amazon uses IP addresses from several different /16 subnets.


[1] https://gitweb.torproject.org/torspec.git?a=blob_plain;hb=HEAD;f=path-spec.txt

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