- tor-relays - lists.torproject.org

Dropping packets with TCP MSS=1400 to foil GFW active probing
by David Fifield 22 Aug '18

22 Aug '18

A paper from FOCI 2018 by Arun Dunna, Ciarán O'Brien, and Phillipa Gill on the subject of Tor bridge blocking in China has this interesting suggestion (Section 5.2): https://www.usenix.org/conference/foci18/presentation/dunna To do this, we write a series specific rules using iptables in order to drop packets from Chinese scanners. ... We use a rule to drop incoming Tor packets with an MSS of 1400. Further investigation would be needed to analyze potential false positives... We note that this method of dropping scan traffic successfully keeps our bridge relays from being blocked and allows our client in China to maintain access to the bridge. Like https://github.com/NullHypothesis/brdgrd, surely this trick won't work forever, but if you're setting up a new bridge, it's worth a try? This is completely untested, but I think the iptables rule would look something like this: iptables -A INPUT --protocol tcp --dport [your-bridge-port] -m tcpmss --mss 1400 -j DROP Then, after a while, check /var/lib/tor/stats/bridge-stats and see if you have any connections from "cn".

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Interested in running a FreeBSD Relay on Cogent?
by Conrad Rockenhaus 21 Aug '18

21 Aug '18

Would you like to trial a FreeBSD Relay on Cogent until October 1st? Yes, it has to be FreeBSD, because I use Bhyve as my hypervisor and some of my blades don’t support UG, which means, I support FreeBSD only on these series of servers. If you’re interested in a Model “A” (25GB HDD, 1vCPU, 2GB RAM, burstable up to 1gbit of bandwidth/unlimited transfer) running FreeBSD and would like to try it out until October 1st, just send me your Public Key. My hope is you will keep it online and hopefully increase the BSD Relay percentage to 7%. After October 1st its only $15/mo, which is my costs alone. You don’t have to worry about abuse complaints, I handle that for you. You just worry about running your exit and maintaining your OS. I take care of everything else. If you’re interested, send me a public key. Thanks, Conrad

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contact for relay in AS64484
by nusenu 20 Aug '18

20 Aug '18

please drop me an email if you are the operator of F0AA2DB7B4B2E7927F88286788773844B68E2C01 Unnamed at 191.96.249.110 thanks! -- https://twitter.com/nusenu_ https://mastodon.social/@nusenu

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Rendezvous on non-OR circuit?
by tor-markus 20 Aug '18

20 Aug '18

I've been running a tor relay for several days now (C65EF5E06B8338CF976D376048BE2C8FBD499C9C). During my regular checks I noticed something odd within the tor log files. [WARN] Tried to establish rendezvous on non-OR circuit with purpose Acting as rendevous (pending) It occurs several times per hour and I couldn't find anything except the [bug tracker](https://trac.torproject.org/projects/tor/ticket/15618) which seems to be outdated (newest message is four weeks old). I'm concerned that this could be some kind of "attack" that could compromise users, as I'm running an exit node. Does somebody have more information on this matter?

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question related to consensus weight fraction calculation
by Toralf Förster 19 Aug '18

19 Aug '18

I do wonder about any changes in the algorithm which drops the cw of a relay [1] by a magnitude within 1 year as seen in [2]? [1] https://metrics.torproject.org/rs.html#details/1AF72E8906E6C49481A791A6F8F8… [2] https://screenshotscdn.firefoxusercontent.com/images/040958f1-a5be-4630-955… -- Toralf PGP C4EACDDE 0076E94E

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How long before a new relay shows up in Relay Search?
by hanzer＠riseup.net 17 Aug '18

17 Aug '18

Hello, I've recently set up a new relay: Tor 0.3.3.7 (git-035a35178c92da94) on a FreeBSD-11.2 machine. The Tor server's identity key fingerprint is: 'Chiron420 9C7BB4BCB58AC876D83B67277A0CF3BC73F4FDF6' A search for this relay on the metrics site says "No Results found!" <https://metrics.torproject.org/rs.html#search/Chiron420%209C7BB4BCB58AC876D…> Is this typical or might there be something awry in my setup? Thanks!

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Random Relay Reset On Mac OS + OS Support Question
by Keifer Bly 17 Aug '18

17 Aug '18

Hello, So something strange happened recently with my relay running on Mac OS via homebrew at https://metrics.torproject.org/rs.html#details/DB1AF6477BB276B6EA5E72132684… Just this morning, my relays uptime had been reset to 0 days. When I checked the software it indeed said the uptime was back to six hours. This is odd as I did not reset thee software within the last 24 hours (that I remember), there was a brief time when my network went down due to an ISP glitch however has been working fine ever since. I am wondering, do newer versions of the tor relay software automatically reset if they detect the internet is unreachable? I also have one more question, around when does tor / homebrew drop support for older versions of an OS? I am asking this because the computer that runs this relay is a 2011 iMac, and Apple has confirmed it will run the new MacOS coming this year (Movari) however versions of macos afterwards are unconfirmed. Thanks all.

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Shutdown by ISP / Hoster? [was Albania]
by grarpamp 16 Aug '18

16 Aug '18

When these ISP's give their shutdowns and excuses, regardless of size of ISP, you could in turn... - Offer to work there, they probably need the help, and you get something from the experience. - Start your own, customers probably need the services, and would be willing to pay. Why vote with only your own customer dollars, when you can add your brain and voice into the production.

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Albania Hosting suspended my two relays
by arisbe 15 Aug '18

15 Aug '18

Greetings Tor Users, I wanted to pass along the death of two of my relays, one was a fallback directory and one exit, both on VPS hardware operated by Albania Hosting sh. a. I successfully operated the guard/middle node for three years without an abuse report. [0] Based on that success, I asked and was granted permission to operate an exit relay. [1] That relay went six months before the first abuse report. I responded to the first report promptly reviewing logs, checking for intrusion, etc. The second abuse report got me suspended. Both abuse reports were of the automated type. I did not see the second report until after suspension and by requesting it be forwarded. In the second instance there was reported one ftpd attack attempt over a period of 3600 seconds. Apparently, no further attempts were made. I was the first Tor relay in Albania and the first Tor exit relay as well so I'm very sad that this will end. I think the issue with Albania Hosting was not so much the automated abuse reports but the inconvenience dealing with me. To quote a recent Hosting email: "Actually we will not fight with such abuses, it is really not worth any penny." So, RIP... [0] TorNodeAlbania D3E5EDDBE5159388704D6785BE51930AAFACEC6F [1] TorExitAlbania 516D1B9E22484202322828D8CAC30325030017E2

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ExoneraTor has moved to Tor Metrics; [release] ExoneraTor 3.0.0
by Karsten Loesing 14 Aug '18

14 Aug '18

Hi, the ExoneraTor service (where one can "enter an IP address and date to find out whether that address was used as a Tor relay") has moved to the Tor Metrics website: https://metrics.torproject.org/exonerator.html Requests to the previous location are automatically redirected to the new location, which includes all permanent links written/printed on previous lookup results. The current plan is to leave redirects in place for the next 6 to 12 months, but if there's a good reason to keep them for longer, please let us know. Just in case you're wondering why we're making this change, it is part of a more long-term effort to bundle all user-facing Tor Metrics content on the Tor Metrics website. Over the past months and years this has affected the Onionoo protocol specification, CollecTor files, the Relay Search service, and now the ExoneraTor service, all of which have been moved over to the Tor Metrics website. At the same time of changing the location of Exonerator, we're releasing ExoneraTor 3.0.0 which redirects all requests to Tor Metrics. However, redirects can easily be disabled in src/main/resources/web.xml, if requests are supposed to be handled locally. Please direct any comments or questions to the (public) metrics-team mailing list: https://lists.torproject.org/cgi-bin/mailman/listinfo/metrics-team All the best, Karsten

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