tor-relays September 2014

tor-relays@lists.torproject.org

74 participants
59 discussions

HAProxy + tor
by list-tor-relays＠nosur.com 26 Sep '14

26 Sep '14

Hello, My tor exit has been building up reputation for months but still fails to saturate a 100 Mbps line while barely using any CPU. Therefore, I recently decided to start a second tor process on the same server which is now slowly building up reputation. I gave the second process a different ORport in order not to affect the first process. Should that not be enough to saturate the line, I might even have to add a third process at yet other ports. I wondered whether the following is also possible: 1. Run tor process #1 on ORPort 8000, but advertise port 443 2. Run tor process #2 on ORPort 8001, but advertise port 443 3. Run tor process #3 on ORPort 8002, but advertise port 443 3. Run HAProxy on port 443; load-balancing between the three tor processes Obviously, this would require HAProxy to always route a circuit to the same tor process, since that tor process keeps track of the state of that specific circuit. Source IP stickiness ("balance source; hash-type consistent") would do that. Would such a setup work? Thanks, Bram

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VPS in China
by I 26 Sep '14

26 Sep '14

Hej, Does anyone have an idea what might be done with a VPS in China? Robert

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Estimating the value and cost of the Tor network
by Mike Perry 25 Sep '14

25 Sep '14

Hello everyone, I would like to put together some estimates on bounds of the current value and cost of the capacity of the Tor network as it is, and use that to generate some rough guestimates on what it would cost to grow it (assuming we solved all the complicated problems with respect to maintaining diversity and operator incentives). In order to make these estimates, I need some people to tell me: 1. Your node identity fingerprints. 2. How these fingerprints map to hardware, CPU cores, and uplink. 3. How much you are paying for this uplink per month. If you are paying less than market rate because of a friendly ISP, ideally you would also tell me what the standard market rate is at that ISP. If you have multiple nodes at multiple datacenters, please break these costs and fingerprints out individually rather than telling me aggregate information. I'd most like to hear from people who are doing the recommended best-practice of running one Tor process instance per CPU core, are paying for dedicated uplink at around 100Mbit/sec or higher at a datacenter, and who are not CPU bound on any of their Tor processes. If this does not apply to you, I'd still like to hear from you, but please tell me these details of your setup. Exit node data is most useful, but I am happy to hear about non-exits too. I suspect they may be much cheaper on average, and getting some data on this is also important. Unfortunately, bridges are not that useful at this time. You do not need to send this information publicly to the list. I am happy to receive it privately via GPG. My GPG key id is 0x29846B3C683686CC, and that key signs all of my mail to all torproject lists. You can get it here: https://pgp.mit.edu/pks/lookup?op=get&search=0x29846B3C683686CC -- Mike Perry

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Bandwidth and weight fractions
by jchase 25 Sep '14

25 Sep '14

Dear Digest, If I take a look at my relay at atlas.torproject.org with the OR address of 83.163.171.103:9001 then I see on a 3 month graph that both my advertised bandwidth fraction and my consensus weight fraction are slowly declining. Concerning bandwidth fraction I assume this is a good thing, because if my bandwidth is stable then total bandwidth is going up (and my fraction is going down). Is the same true of my consensus weight fraction? If I'm going down, the total is going up? Thanks, JChase

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Good hosting location for exit relay
by DerTor Steher 25 Sep '14

25 Sep '14

Hey, for a few days now I'm looking for an appropriate ISP for my new exit relay. There are a few problem I am facing now: 1.) Since I'm living in germany it isn't the very best to host an exit relay in germany, so I need to know which country is (law related) the best country I could host my VPS. 2.) The choice of a hoster. It's not easy to find a good and reliable and (if possible) cheap hoster which allows tor exit relays so I need to crawl to whole Good/Bad ISPs list for such providers. If I had the cash I would rent a server at Cyberbunker but it's to expensive to only run a relay there. I would appreciate if you could help me or at least give me some tips with finding the best country and provider. Thanks. :)

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Re: [tor-relays] Call for a big fast bridge (to be the meek backend)
by David Fifield 25 Sep '14

25 Sep '14

On Mon, Sep 15, 2014 at 07:12:23PM -0700, David Fifield wrote: > The meek pluggable transport is currently running on the bridge I run, > which also happens to be the backend bridge for flash proxy. I'd like to > move it to a fast relay run by an experienced operator. I want to do > this both to diffuse trust, so that I don't run all the infrastructure, > and because my bridge is not especially fast and I'm not especially > adept at performance tuning. > > All you will need to do is run the meek-server program, add some lines > to your torrc, and update the software when I ask you to. The more CPU, > memory, and bandwidth you have, the better, though at this point usage > is low enough that you won't even notice it if you are already running a > fast relay. I think it will help if your bridge is located in the U.S., > because that reduces latency from Google App Engine. > > The meek-server plugin is basically just a little web server: > https://gitweb.torproject.org/pluggable-transports/meek.git/tree/HEAD:/meek… A couple of other requirements have shown themselves in helping set up a meek-server relay. The first is that it has to be a 0.2.5.x version of tor. This is so that the ExtORPort option will be supported. The ExtORPort option is needed in order to collect statistics on pluggable transports (see #4773). One of the lines you will have to add to torrc is: ExtORPort auto If your tor does not support the option, you will see in the log: [warn] Failed to parse/validate config: Unknown option 'ExtORPort'. Failing. The second requirement is that the relay needs to have either BridgeRelay or DirPort set. If neither of these options is set, the relay will not be a directory cache, and clients will not be able to bootstrap past "20%: Asking for networkstatus consensus." As I understand it, #12538 will make it so that every relay is a directory cache, but it is not committed yet. I'll check back privately with the people who offered to run a relay and check if setting these options is okay. David Fifield

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Help collect hidden service usage stats?
by Roger Dingledine 24 Sep '14

24 Sep '14

Hi folks, If you are comfortable compiling Tor from git, and you want to help investigate what fraction of Tor network load comes from hidden service use, I have a shiny new git branch called hs-stats that will collect per-thirty-minute statistics about number of circuits and number of cells your relay sees that have to do with exiting, with hidden services, with circuits where you're not the final hop, and a fourth none-of-the-above category. https://trac.torproject.org/projects/tor/ticket/13192 It skips all circuits and cells that come from non-relays, which should help make sure the stats aren't useful for hurting anonymity. It doesn't automatically send the output anywhere -- it just writes it to its notice-level log for now. So you'll need to either send me the log lines, or add them to the trac ticket like I did here: https://trac.torproject.org/projects/tor/ticket/13192#comment:2 Preliminary results are that load from hidden services is actually a tiny fraction of overall load. A bonus use from these statistics would be to learn what fraction of load comes from exit connections vs middle connections, for relays with various consensus flags. And of course, it's possible there are bugs in how I'm doing the counting. I'll keep investigating to make sure I'm doing it right. Thanks! --Roger

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How about a TWN entry about hosting locations?
by Jens Kubieziel 24 Sep '14

24 Sep '14

Hi, it seems quite much work for a person to collect information about hosting locations. So what do you think about putting a section into next TWN which links to a wiki page where everyone can share information about costs in different regions? -- Jens Kubieziel http://www.kubieziel.de Es genügt nicht, keine Gedanken zu haben. Man muß auch unfähig sein, sie auszudrücken. Karl Kraus

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Alternative Nobel Prize
by Sebastian Urbach 24 Sep '14

24 Sep '14

Hi, The german magazine "der Spiegel" reports that Edward Snowden will receive the Alternative Nobel Prize. Congratulations Edward ! -- Mit freundlichen Grüssen / Sincerely yours Sebastian Urbach ----------------------------------------- Definition of TOR: 10% luck, 20% skill, 15% concentrated power of will, 5% pleasure, 50% pain and 100% reason to remember the name! -----------------------------------------

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A friendly reminder for all ScrambleSuit bridge operators.
by Yawning Angel 24 Sep '14

24 Sep '14

Hello all, This is a friendly reminder to all ScrambleSuit bridge operators that unless you are running tor-0.2.5.x, you should not be running a ScrambleSuit bridge. This is because the method for propagating the ScrambleSuit password (or any other future pluggable transport server side argument) for inclusion in the Bridge line served from BridgeDB was implemented in 0.2.5.x, and is not present in 0.2.4.x, and to make matters worse, 0.2.4.x has a bug that will allow this configuration to run instead of failing with an error[0]. If you are running a ScrambleSuit bridge with tor-0.2.4.x, it is useless. Users that happen to be served your ScrambleSuit bridge will not be able to connect, because the password is missing. Approximately 1/7th of the ScrambleSuit bridges in BridgeDB exhibit this behavior and we will most likely start filtering them on the BridgeDB side. Please see https://trac.torproject.org/projects/tor/ticket/13202 if you wish to know more about this. Best Regards, -- Yawning Angel [0]: Apparently this is not worth patching 0.2.4.x for, which I personally view as unfortunate.

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tor-relays September 2014