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Old 06-23-2015, 04:07 PM   #1
Ulysses_
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Use multiple TOR connections simultaneously for redundancy and performance


TOR is often too slow, this happens when one of the nodes chosen at a time is too slow.

Instead we could imagine using several TOR connections simultaneously and redundantly, ignoring the packets that take too long to be acknowledged so only the fastest connection takes the full load.

How can this be done?

Maybe with virtual machines acting as TOR clients and presenting a network interface each to the host so the host thinks it has 10 network interfaces and is duplicating its packets across them?

Last edited by Ulysses_; 06-23-2015 at 04:20 PM.
 
Old 06-23-2015, 04:12 PM   #2
Ulysses_
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Maybe something similar to EOP Xtream, but for linux and open-source and with the connections to different network interfaces gatewayed to TOR clients?

Quote:
there is a theory that opening multiple TCP streams can increase performance in environments where latency is an issue. The advantage comes from the "reliable" nature of TCP, and the fact and senders have to wait for acknowledgement packets, and since TCP window sizes can't be too huge across real world WANs, you can get better performance if you take your TCP stream and slice it into a bunch of parallel streams.
http://www.brianmadden.com/blogs/vid...-goodness.aspx

Last edited by Ulysses_; 06-23-2015 at 04:21 PM.
 
Old 06-23-2015, 04:18 PM   #3
dijetlo
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I'm not certain you wouldn't achieve the same efficiency by bonding a pair of NICs and running multi-path.
You're looking for the shortest route between two points, let's hope re-inventing the compass is optional.
 
Old 06-23-2015, 04:23 PM   #4
Ulysses_
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Any good places to read about and get started with multi-path?
 
Old 06-23-2015, 04:27 PM   #5
dijetlo
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Here's a place to start

Red Hat has DM Multi-path capability, but that's specifically for storage, not server client arrangements.
 
Old 06-23-2015, 04:45 PM   #6
John VV
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i do think that would make you VERY identifiably in the tor network
and rather easily tracked back to YOU

negating the use for TOR

just use a normal network for SPEED
 
Old 06-23-2015, 05:04 PM   #7
Ulysses_
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What would visited sites see? Wouldn't they see 10 visitors all downloading the same page?
 
Old 06-23-2015, 05:13 PM   #8
astrogeek
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Multiple mostly useless requests for the same page in a short time from the same site, across multiple paths of a finite network (TOR)...

That could be construed as a form of DDOS attack in my book!

At best it is wasteful of the target site and TOR network resources, very selfish and inconsiderate! At worst, with multiple clients it would become an anonymized DDOS delivery network in its own right! At worst, if it became the defacto way to use TOR it would leverage the traffic levels by the number of request paths - 10X in your example! A 10X level of traffic on an already slow resource limited network... you see where that goes...

Last edited by astrogeek; 06-23-2015 at 05:16 PM.
 
Old 06-23-2015, 05:16 PM   #9
Ulysses_
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What if multipath only uses one of the paths, the one with the fastest acknowledgements?
 
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Old 06-23-2015, 05:26 PM   #10
Ulysses_
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Just found it does something close to that. Here is a demo video (see under "Linux Kernel MultiPath TCP in action"):

http://www.multipath-tcp.org/
 
Old 06-23-2015, 09:41 PM   #11
dijetlo
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I don't think IP multi-path sends identical requests over multiple paths, it polls for a faster path than it currently routes over and when it locates one, it uses it.
So concerns about it creating accidental ddos attacks are probably misplaced.
 
  


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