Advertising multiple ORPorts at once

Nick Mathewson nickm at
Sat Mar 20 05:39:08 UTC 2010

On Fri, Mar 19, 2010 at 11:26 AM, hiro <23hiro at> wrote:
> Hi,
> I've been skimming over the gsoc ideas.
>>The Tor 0.2.1.x series makes significant improvements in resisting national and organizational censorship. But Tor still needs better mechanisms for some parts of its anti-censorship design. For example, current Tors can only listen on a single address/port combination at a time.
> How exactly does this improve anonymity?

It helps with anti-censorship, not anonymity per se (afaict).  The
idea is that many hosts have more than one address, and nearly all can
listen on multiple ports.  Actually using this ability would allow a
bridge to actually accept connections at all its addresses (in the
first case) and help defeat naive port-blocking approaches (in the

It's not exactly cutting edge stuff, but every little bit can help here.

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