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4-optional.hidserv.pot
Added 19 FAQ entries
Matt Pagan
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at 2013-08-26 04:06:05
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# SOME DESCRIPTIVE TITLE # Copyright (C) YEAR The Tor Project, Inc. # This file is distributed under the same license as the PACKAGE package. # FIRST AUTHOR <EMAIL@ADDRESS>, YEAR. # #, fuzzy msgid "" msgstr "" "Project-Id-Version: PACKAGE VERSION\n" "POT-Creation-Date: 2009-08-15 13:29+0300\n" "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n" "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n" "Language-Team: LANGUAGE <LL@li.org>\n" "MIME-Version: 1.0\n" "Content-Type: text/plain; charset=UTF-8\n" "Content-Transfer-Encoding: 8bit\n" #. type: Content of: <div><h2> #: /home/runa/tor/website/projects/en/hidserv.wml:11 msgid "NLnet Project: Speed Up Tor Hidden Services" msgstr "" #. type: Content of: <div> #: /home/runa/tor/website/projects/en/hidserv.wml:12 msgid "<hr />" msgstr "" #. type: Content of: <div><p> #: /home/runa/tor/website/projects/en/hidserv.wml:15 msgid "" "Tor Hidden Services allow users to set up anonymous information services, " "like websites, that can only be accessed through the Tor network and are " "protected against identification of the host that runs the services. The " "most critical limitations of Tor Hidden Services are the time it takes until " "a Hidden Service is registered in the network and the latency of contact " "establishment when accessed by a user. Due to design issues in the original " "Tor protocol, the connection to a new Hidden Service can take several " "minutes, which leads most users to give up before the connection has been " "established. Using Tor Hidden Services for direct interactive user-to-user " "communication (e.g. messaging) is nearly impossible due to the high latency " "of Hidden Service circuit setup." msgstr "" #. type: Content of: <div><p> #: /home/runa/tor/website/projects/en/hidserv.wml:30 msgid "" "This project aims at speeding up Tor Hidden Services by improving the way " "Tor circuits are set up between the user and the Hidden Service as well as " "the way a Hidden Service is registered in the Tor network. In a first step " "precise diagnostics of the behavior of the Hidden Services in lab setups and " "real world situations will be conducted to find the root causes of the bad " "timing effects. Based on these diagnostics, optimization strategies will be " "designed and verified for unwanted implications for the security and " "anonymity of the Tor network. The most promising optimizations will then be " "implemented to achieve a notable improvement for the users. Precise success " "metrics will be developed in the diagnostics phase, after it becomes clear " "where the time is lost and what improvements are realistic. The ultimate " "goal is to have the Hidden Services protocol change production ready and " "propagated to the Tor users within a timeframe of less than 12 months." msgstr "" #. type: Content of: <div><p> #: /home/runa/tor/website/projects/en/hidserv.wml:49 msgid "This project is generously funded by:" msgstr "" #. type: Content of: <div><p> #: /home/runa/tor/website/projects/en/hidserv.wml:53 msgid "" "<a href=\"http://www.nlnet.nl/news/2008/20080514-awards.html\"> <img src=" "\"$(IMGROOT)/nlnet-160x60.png\" alt=\"The NLnet foundation\" /></a>" msgstr "" #. type: Content of: <div><table><thead><tr><th> #: /home/runa/tor/website/projects/en/hidserv.wml:60 msgid "<big>Project</big>" msgstr "" #. type: Content of: <div><table><thead><tr><th> #: /home/runa/tor/website/projects/en/hidserv.wml:61 msgid "<big>Due Date</big>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:67 msgid "" "<b>Deliverable A:</b> Analysis, measurements and problem clarification<br /> " "<small><em>As Tor Hidden Services have not been actively developed further " "in the last year or so of Tor development, certain aspects of the problems " "are under-diagnosed. To identify the precise sources of latency and time " "loss, an extensive analysis of the deeper reasons for them needs to be " "conducted. Deliverable A will require about one month of work. The results " "of the analysis will influence the design decisions to be taken in " "Deliverable B.</em></small>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:78 msgid "June 15, 2008" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:84 msgid "" "<b>Deliverable B:</b> Design and evaluation of the necessary changes<br /> " "<small><em>The changes to Tor Hidden Services will affect core functionality " "of the protocol and therefore require a careful evaluation of possible " "repercussions for the security and anonymity. A two-month period is planned " "for the design and evaluation phase, which concludes with an extensive peer " "review.</em></small>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:93 msgid "August 15, 2008" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:99 msgid "" "<b>Deliverable C:</b> Implementation<br /> <small><em>After design, " "evaluation and peer review the modifications need to be implemented and " "integrated with the current Tor code base. The actual implementation of the " "necessary changes will take approximately two months.</em></small>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:106 msgid "October 15, 2008" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:112 msgid "" "<b>Deliverable D:</b> Implementation and test of the change up to release " "state<br /> <small><em>The modification is highly critical to the security " "and anonymity of the Tor network, it requires extensive testing and " "debugging in laboratory and real life conditions. A period of three months " "is projected for testing and debugging, where the responsible developer is " "committed to the testing effort with 1/3 of its time. Part of the testing " "phase will be a public beta period.</em></small>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:122 msgid "January 15, 2009" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:128 msgid "" "<b>Deliverable E:</b> Rollout<br /> <small><em>The actual rollout to the Tor " "server network will be conducted in sync with the regular Tor release " "schedule. As this schedule is dependent on a number of external factors, " "like the completion of other software projects that should go into the same " "release, the actual release time and the time until this release has been " "accepted and installed by most Tor server operators can vary. From " "experience a period of three to four months can be expected.</em></small>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:139 msgid "May 15, 2009" msgstr "" #. type: Content of: <div> #: /home/runa/tor/website/projects/en/hidserv.wml:144 msgid "<br /> <a id=\"Reports\"></a>" msgstr "" #. type: Content of: <div><h2> #: /home/runa/tor/website/projects/en/hidserv.wml:147 msgid "<a class=\"anchor\" href=\"#Reports\">Monthly Status Reports</a>" msgstr "" #. type: Content of: <div><p> #: /home/runa/tor/website/projects/en/hidserv.wml:149 msgid "" "There will be in total eight monthly status reports beginning with the first " "deliverable on June 15, 2008 and ending with completion of implementation " "and testing work on January 15, 2009." msgstr "" #. type: Content of: <div><table><thead><tr><th> #: /home/runa/tor/website/projects/en/hidserv.wml:157 msgid "<big>Month,</big>" msgstr "" #. type: Content of: <div><table><thead><tr><th> #: /home/runa/tor/website/projects/en/hidserv.wml:158 msgid "<big>Status Report</big>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:164 msgid "<a id=\"Jun08\"></a> <a class=\"anchor\" href=\"#Jun08\">Jun 08</a>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:168 msgid "" "<small><em>The original goal of analyzing the problems that lead to slowdown " "of Tor Hidden Services has been accomplished. Part of this analysis was " "measuring the delay that a user experiences when setting up or accessing a " "hidden service. Furthermore, measurement data from April 2008 could be " "leveraged to explore timings of internal substeps of establishing a " "connection to a hidden service. The results of this analysis are contained " "in a 22-page <a href=\"http://freehaven.net/~karsten/hidserv/perfanalysis-" "2008-06-15.pdf\">report</a> that has been made public on the Tor <a href=" "\"http://archives.seul.org/or/dev/Jun-2008/msg00019.html\">developer mailing " "list</a>.</em></small> <br/> <small><em>The analysis also unveiled a few " "bugs which were responsible for part of the delay in making a hidden service " "available for clients. Some bugs have been fixed subsequent to the analysis, " "others will be fixed soon. The evaluation has further brought up several " "possible approaches to improve Tor Hidden Service performance. Some of these " "ideas can be applied immediately, while others require deeper analysis and " "new measurements. Finally, in the course of the analysis, we discovered that " "some improvements require more in-depth changes to Tor which are not " "directly related to hidden services. These changes cannot be achieved in the " "time frame of this project.</em></small>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:196 msgid "<a id=\"Jul08\"></a> <a class=\"anchor\" href=\"#Jul08\">Jul 08</a>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:200 msgid "" "<small><em>All bugs that have been found in the analysis have been fixed. " "This includes the 2 bugs that have already been fixed during the analysis " "and 4 more bugs that were fixed within the past 30 days. While the bugfixes " "remove unintended performance bottlenecks due to programming errors, some of " "the design changes that have been spotted in the previous analysis have side-" "effects on anonymity or overall network load which need to be evaluated " "against individual performance gains. A <a href=\"http://freehaven.net/" "~karsten/hidserv/discussion-2008-07-15.pdf\">report</a> has been published " "to the <a href=\"http://archives.seul.org/or/dev/Jul-2008/msg00034.html" "\">developer mailing list</a> including 7 possible design changes that need " "to be discussed. Some evaluations (namely Low-Bandwidth Measurements and the " "Grand Scaling Plan) have turned out to require more time than expected and " "had to be scheduled for a later time in the project than deliverable B. The " "current plan is to perform these evaluations within the timeframe until " "January 15 and work with assumptions until final results are available.</" "em></small>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:222 msgid "<a id=\"Aug08\"></a> <a class=\"anchor\" href=\"#Aug08\">Aug 08</a>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:226 msgid "" "<small><em>During the past 30 days the 7 proposed designs have been further " "evaluated and discussed. Four of them have proven to be applicable in terms " "of the required changes to the code and possible anonymity implications. One " "has been classified as bug rather than design change. Two had to be excluded " "for either unforeseeable security problems, or uncertainty of actual " "performance improvements.</em></small> <br/> <small><em>Together with the " "results from July 15, the design phase has been concluded. The tasks for the " "upcoming implementation phase are now quite clear: One bug needs to be fixed " "and four design changes need to be implemented. Further, evaluations of the " "changed design need to be performed in order to verify their usefulness. A " "<a href=\"http://freehaven.net/~karsten/hidserv/design-2008-08-15.pdf" "\">report</a> with the results of the design phase has been published to the " "<a href=\"http://archives.seul.org/or/dev/Aug-2008/msg00025.html\">developer " "mailing list</a>.</em></small>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:248 msgid "<a id=\"Sep08\"></a> <a class=\"anchor\" href=\"#Sep08\">Sep 08</a>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:252 msgid "" "<small><em>During the first half of the implementation phase two bugs could " "be fixed that were related to hidden services: the <a href=\"http://bugs." "noreply.org/flyspray/index.php?do=details&id=767\">first bug</a> has " "already been identified in the design phase and was responsible for an " "unusual high failure rate when making a hidden service available in the " "system; the <a href=\"http://bugs.noreply.org/flyspray/index.php?id=814&" "do=details\">second bug</a> was found during the implementation phase and " "was responsible for failure to connect to a working hidden service. Both " "bugfixes will be included in the next unstable version and likely be " "backported to one of the next stable releases.</em></small> <br/> " "<small><em>The four design changes that were proposed as result of the " "design phase have been implemented in an <a href=\"https://tor-svn.freehaven." "net/svn/tor/branches/hidserv-design-changes/\">experimental branch</a> of " "the unstable development tree. Early function tests have shown that these " "changes work and provide better (perceived) performance. This needs to be " "confirmed throughout the next four weeks in internal tests. The next goal is " "to prepare a release of this experimental branch that can be given out to " "beta testers at the beginning of the upcoming testing phase.</em></small>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:278 msgid "<a id=\"Oct08\"></a> <a class=\"anchor\" href=\"#Oct08\">Oct 08</a>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:282 msgid "" "<small><em>The implementation phase has been concluded. The bugfixes that " "were found in the past 30 days have been released in developer version <a " "href=\"http://archives.seul.org/or/talk/Oct-2008/msg00093.html\">0.2.1.6-" "alpha</a>. The four design changes that were identified in the design phase " "have been specified in <a href=\"https://svn.torproject.org/svn/tor/trunk/" "doc/spec/proposals/155-four-hidden-service-improvements.txt\">proposal 155</" "a>. Three design changes have been included in the development codebase and " "will automatically be included in the next development version. The first " "two design changes improve connection establishment to a hidden service by " "reducing a timeout from 60 to 30 seconds and by making a second attempt in " "parallel after a delay of 15 seconds. The third design change affects " "publication of a hidden service in the network by advertising the service at " "5 rather than 3 points in the network in parallel and succeeding as soon as " "3 points are established. The fourth design change has turned out to be " "rather ineffective, but would add considerable code complexity and was " "therefore dismissed. By now there are no more open bugfixes or new designs. " "All changes are in the development codebase and can be tested in the next " "phase.</em></small>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:305 msgid "<a id=\"Nov08\"></a> <a class=\"anchor\" href=\"#Nov08\">Nov 08</a>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:309 msgid "" "<small><em>The performance improvements that were implemented in the last " "phase have been released in Tor version 0.2.1.7-alpha. Users can download " "this development version from the Tor homepage and test the improvements " "with minimal effort. Further, two bugfixes (<a href=\"http://bugs.noreply." "org/flyspray/index.php?id=767&do=details\">1</a>, <a href=\"http://bugs." "noreply.org/flyspray/index.php?id=814&do=details\">2</a>) that were " "found in the course of this project have been backported to the stable " "branch and will be included with the next stable version 0.2.0.32.</em></" "small> <br/> <small><em>The main focus of the past 31 days was to perform " "new measurements to see whether the improvements are effective or not. " "Measurements were conducted for two days in the time of November 6th to 8th. " "Unfortunately, the Tor network suffered a serious problem in this time: An " "expired directory authority certificate produced huge amounts of traffic " "within the Tor network which <a href=\"http://archives.seul.org/or/talk/Nov-" "2008/msg00053.html\">forced many operators to shut down their relays</a>. A " "second measurement was performed between 13th and 15th. The raw data are " "available <a href=\"http://freehaven.net/~karsten/hidserv/perfdata-2008-11-" "13.tar.gz\">here</a> (40 MB). But results show that the overall network " "performance is still worse than in June 2008 when the first hidden service " "measurements have been performed. This becomes visible when comparing " "requests to the Tor directories which have not been affected by the " "performance improvements and which exhibit significantly worse performance " "than before. The effects of performance improvements are visible, but " "absolute values are not comparable at this time. New measurements will be " "conducted in December in the hope that the effects of this problem have " "mitigated.</em></small> <br/> <small><em>Further, there might be a <a href=" "\"http://bugs.noreply.org/flyspray/index.php?id=847&do=details\">bug</a> " "in the way how Tor downloads directory information during bootstrapping. " "Even though this is not related to hidden services, an improvement would " "benefit hidden service publication, too. Part of the work during the " "upcoming 30 days will be to investigate this bug. </em></small>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:351 msgid "<a id=\"Dec08\"></a> <a class=\"anchor\" href=\"#Dec08\">Dec 08</a>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:355 msgid "" "<small><em>Part of the last 30 days has been used to fix bugs that have " "influenced the previous hidden service measurements. The first <a href=" "\"http://archives.seul.org/or/cvs/Nov-2008/msg00100.html\">bugfix</a> " "corrects a possible segmentation fault that was very likely responsible for " "a number of failed measurement runs. Another <a href=\"https://bugs." "torproject.org/flyspray/index.php?id=847&do=details\">bug</a> could be " "explained that lead to significant delays in bootstrapping: Very slow " "directory authorities occupied bootstrapping clients for a long time before " "clients finally gave up and bootstrapped using another authority. As a " "result, the slowest two directory authorities have dedicated more bandwidth " "to their nodes, so that the effect is mitigated. A third <a href=\"https://" "bugs.torproject.org/flyspray/index.php?id=874&do=details\">bug</a> has " "been introduced with the hidden service performance improvements in " "November; the effect was that Tor processes running hidden services would " "stop advertising their service upon reloading their configuration. Further, " "this bug has uncovered that Tor has re-established its introduction points " "upon reloading, which might have affected hidden service stability. This bug " "has been fixed and will be included in the upcoming version 0.2.1.9-alpha.</" "em></small> <br/> <small><em>Apart from fixing bugs, new measurements have " "been performed between December 8 and 10. These will very likely be the " "final measurements to compare hidden service performance now with the " "beginning of the project. The data have not been completely evaluated, so it " "is difficult to make a statement about improvements at this point. However, " "a <a href=\"http://freehaven.net/~karsten/hidserv/prelimreport-2008-12-15.pdf" "\">preliminary evaluation</a> shows that service publication times have " "improved significantly. This is a result of Tor clients bootstrapping faster " "and of the performance improvements added in November. In contrast to this, " "the results for establishing a connection to a hidden service are less " "promising. While the improvements added in November seem to have a positive " "effect on performance, some substeps exhibit significantly worse " "performance. One example is fetching hidden service descriptors in order to " "contact a hidden service. A possible explanation is that the sudden increase " "in the number of hidden service directory nodes in September has had a " "negative effect on performance. Part of the work in the final 31 days will " "be to evaluate these data in more detail and make a final conclusion on the " "achievements of this project.</em></small>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:401 msgid "<a id=\"Jan09\"></a> <a class=\"anchor\" href=\"#Jan09\">Jan 09</a>" msgstr "" #. type: Content of: <div><table><tr><td> #: /home/runa/tor/website/projects/en/hidserv.wml:405 msgid "" "<small><em>The testing phase has been concluded. Testing was performed in a " "public beta phase with all changes to hidden services being part of the " "0.2.1.x-alpha series. The result of the public beta phase is a couple of " "identified bugs that could already be fixed.</em></small> <br/> " "<small><em>Another part of testing was a second set of measurements that was " "performed in December. A <a href=\"http://freehaven.net/~karsten/hidserv/" "comparison-2009-01-15.pdf\">comparison</a> of measurements performed in June " "and December has revealed that the changes of this project are effective. " "Service publication times could be more than halved from 2:12 minutes to 58 " "seconds in the mean. This improvement is far better than expected. With this " "improvement it might even be worthwile to think about reducing stabilization " "time from 30 seconds to a lower value in the future. However, connection " "establishment remains at approximately 56 seconds between requesting a " "hidden service to having established a connection to the hidden server. The " "main reason for missing improvements is the switch from the centralized to a " "decentralized storage for hidden service descriptors. This deteriorating " "effect of distributing the hidden service directory has not been expected " "before. Future work should focus on improving downloads from the distributed " "hidden service directory, for example by parallelizing requests.</em></" "small> <br/> <small><em>This report concludes the series of monthly status " "updates. The rollout of the 0.2.1.x series including the hidden service " "performance improvements is going to take place within the next weeks to " "months.</em></small>" msgstr "" # #. Do we want a people section? If so, would it make sense to write what #. these people will be doing? And what exactly are these people going to #. do? :) #. <a id="People"> #. </a> #. <h2><a class="anchor" href="#People">People</a></h2> #. <ul> #. <li><a href="<page people>#Core">Karsten Loesing</a></li> #. <li><a href="<page people>#Core">Steven Murdoch</a></li> #. </ul> #. type: Content of: <div> #: /home/runa/tor/website/projects/en/hidserv.wml:436 msgid "<br /> <a id=\"Links\"></a>" msgstr "" #. type: Content of: <div><h2> #: /home/runa/tor/website/projects/en/hidserv.wml:450 msgid "<a class=\"anchor\" href=\"#Links\">Links</a>" msgstr "" #. type: Content of: <div><ul><li> #: /home/runa/tor/website/projects/en/hidserv.wml:452 msgid "" "Research paper on <b>Performance Measurements and Statistics of Tor Hidden " "Services</b> (<a href=\"http://www.uni-bamberg.de/fileadmin/uni/fakultaeten/" "wiai_lehrstuehle/praktische_informatik/Dateien/Publikationen/" "loesing2008performance.pdf\">PDF</a>) by Karsten Loesing, Werner Sandmann, " "Christian Wilms, and Guido Wirtz. In the Proceedings of the 2008 " "International Symposium on Applications and the Internet (SAINT), Turku, " "Finland, July 2008." msgstr ""
