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Re: [tor-relays] Call for obfs4 bridges, and a brief discussion of obfs4proxy.





On 10/27/2014 06:38 PM, s7r wrote:
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On 10/28/2014 12:24 AM, Steve Snyder wrote:
Does obfs4 support IPv6 addresses?  If so, does it work like ORPort
in that it is just a matter of adding another line?


Yes.

For example, to add an IPv6 address can I just replace

ServerTransportListenAddr obfs4 111.222.333.444:__RNDPORT__

with

ServerTransportListenAddr obfs4 111.222.333.444:__RNDPORT__
ServerTransportListenAddr obfs4
[1111:2222:3333:4444::1]:__RNDPORT__

in the config file?

Yes, that sounds right. If you don't have multiple interfaces or don't
care if you open the ports on all interfaces, here is how I do it:
I use ServerTransportListenAddr obfs4 [::]:_RNDPORT_ -> it opens the
obfuscated ports on both v4 and v6 (dual stack).

If you do so, do it to ORPort also, so it will be a fully dual stack
bridge, like:
ORPort 111.222.333.444:_PORT_
ORPort [111.222.333.444::1]:_PORT_

Can I use the same ExtORPort for both IPv4 and IPv6 addresses?

Just use

ExtORPort auto

See, the problem is that I *do* have multiple interfaces, each with an IPv4 and IPv6 address. I don't go the "auto" route because I want to avoid having Tor pick the wrong interface/addresses. I want the bridge to run on a given interface and only on that interface.

One more question: how can I test the functionality of obfs4proxy given that TorBrowser v4.0.0 doesn't support this transport?

Thanks for the response.
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