- tor-relays - lists.torproject.org

Tor crashes frequently on fast relay
by Random Tor Node Operator 11 Sep '13

11 Sep '13

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello everybody, since this botnet started flooding Tor, my Tor relay Bazinga ($196832C61F30E9D6D179393C9AED4E47FD29796B) has been experiencing some issues. Previously, it was relaying 100 Mbit/s for a few months without problem. When the botnet came along, at first the throughput dropped to about 30 Mbit/s and Tor kept spamming "Your CPU is too slow" and crashed every hour or so. I set RelayBandwidthRate to 20 Mbit/s which reduced the crash frequency. Then, 0.2.4.17-rc was released and I lifted RelayBandwidthRate back to 100 Mbit/s. At first it was running fine, but then the crashes came back. This is from yesterday and the day before: $ sudo grep -i interrupt /var/log/tor/log.1 Sep 10 08:59:40.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 10 10:01:45.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 10 11:04:50.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 10 12:49:56.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 10 13:51:01.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 10 15:22:18.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 10 16:07:27.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 10 18:56:03.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. $ sudo zcat /var/log/tor/log.2.gz|grep -i interrupt Sep 09 06:51:20.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 07:54:30.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 08:48:36.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 09:51:56.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 10:20:01.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 10:49:06.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 13:03:26.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 13:26:40.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 13:50:47.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 14:02:54.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 14:26:06.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 14:42:11.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 14:52:17.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 15:08:31.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 15:21:37.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 15:31:27.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 15:44:32.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 15:53:38.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 16:02:45.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 16:08:50.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 16:16:56.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 16:24:04.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 16:34:10.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 16:48:20.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 16:55:25.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 17:02:30.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 17:21:39.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 17:35:45.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 18:51:51.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 19:14:02.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 19:30:10.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 19:50:16.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 20:06:23.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 20:49:52.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 21:13:00.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 21:51:06.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. Sep 09 22:54:22.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now. It is a VPS on a Xen hypervisor with 3x Intel(R) Xeon(R) CPU L5630 @ 2.13GHz and 2 GB RAM According to htop, tor currently uses about 105% CPU and 350 MB RAM. It was around the same CPU and RAM consumption while it was happily relaying 100 Mbit/s. At first I was suspecting the hoster to have reduced CPU resources or so, but they said they didn't change anything, including no virtualization parameters. Any help would be appreciated. - --RTNO -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBAgAGBQJSMCRbAAoJEJe61A/xrcOQmfcP/Rq2XmtQk8e4orMWe1rPHnKX 6CMMmrI5TIAW/XQ+Qulr2ElEKh0M85XSagF8ZeziQVL348z3FoI36HwUMbzLnkI3 uELx8kq1xTGlLOmtSEdyD9xH2dwCxarlogexVb3uHUVEUQM99GMQd/A4bSzLPgTW 6fnwvDWNNZ4x1PKXxElejGhoHiq2oW5f5JoSijw4LUWJBI2SrXx4aWFHm4SofVti Cncaf+UVM2f4loBn9gUh5LWmbeWviDXsk9p5DeNAAaJ8BwK8dp4MyAoH731dcbpw svJ2b1R0TtmgyO6g/WLJcJX3s9u6iKq2QzQgLavynsAaazn6Rr4nRqPD02TFM7rw nyP9H6r08P/7gumOF3G4JSXe3Px6GMipdcGNl0fBjr6R67sB7ZeMwT00O53m0f5l InUbCCghG/ukcEtbly0CZfu7qOISlz9cxUFShmYWOLv3EpMboh9lyMNC3DbyAYH2 3kMfffyVLS21HgNA57l0N+aZl++jz+EIwFK8r+L9xZEOUBQKcXrfm0jXneV6j8uA J9NuXYyKHWltxU+EO2ccyN2Zco/3KA044dwSnTo1BXCHnt95DjyylLcQj5+7+KYW QIsviYsONp4FSz0aQUFOnLk5KAhZtieQ28Iav1S4Gb3QiL4pY2rR9r27dBZ/E1wg +C9uvwcJz4ei14ZR9A19 =BoPn -----END PGP SIGNATURE-----

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Re: [tor-relays] Running Bind locally
by tor＠t-3.net 11 Sep '13

11 Sep '13

For linux bind named.conf: Within "options {" put: allow-query { any; }; allow-recursion { trusted; }; allow-query-cache { trusted; }; Then, add this new section somewhere after the options closing bracket: acl "trusted" { localhost; localnets; //netblocks/IPs you want, examples below: 123.23.23.23/24; 12.123.123.123; }; On Tuesday 10/09/2013 at 4:23 am, Eugen Leitl wrote: > On Tue, Sep 10, 2013 at 12:45:03AM -0700, Bry8 Star wrote: >> >> If you run your own BIND/named as Authoritative DNS-Server, for some >> domain-name that you own, and if it is also configured to function >> as a Recursive DNS-Server for local software (in that computer), and >> if you have enabled DNSSEC (for recursive side), then that would be >> better, imho. > > Speaking about recursive DNS for BIND, does anyone have > a working set of options which limit recursive DNS queries > to just the local subnet, and another couple IPs, maybe? > > > _______________________________________________ > tor-relays mailing list > tor-relays(a)lists.torproject.org > https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-relays >

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The lifecycle of a new Tor relay
by Roger Dingledine 11 Sep '13

11 Sep '13

Many people set up new fast relays and then wonder why their bandwidth is not fully loaded instantly. In this post I'll walk you through the lifecycle of a new fast non-exit relay, since Tor's bandwidth estimation and load balancing has gotten much more complicated in recent years. https://blog.torproject.org/blog/lifecycle-of-a-new-relay --Roger

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Is this suspicious?
by I 10 Sep '13

10 Sep '13

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Running Bind locally
by Yoriz 10 Sep '13

10 Sep '13

My VPS hoster has configured DNS as follows: $ cat /etc/resolv.conf nameserver 8.8.8.8 nameserver 8.8.4.4 I believe these are Google's DNS servers. Unfortunately, they are somehow unreliable (possible rate-limited by Google). My tor logs are filled with: Sep 07 16:37:24.000 [warn] eventdns: All nameservers have failed Sep 07 16:37:25.000 [notice] eventdns: Nameserver 8.8.8.8:53 is back up Sep 07 16:37:35.000 [warn] eventdns: All nameservers have failed Sep 07 16:37:35.000 [notice] eventdns: Nameserver 8.8.4.4:53 is back up Are there other free, open DNS services that might be more reliable/less rate-limited? Does Tor use the system DNS configuration? In other words, if I would run a local Bind daemon, would my tor exit use it? Is that bad for the safety of the tor user, as the Bind daemon effectively becomes an audit log of all domains visited by tor users? // Yoriz

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Exit relay operators: a call for packets on port 8118
by rotpoison throngnet 09 Sep '13

09 Sep '13

I am an exit relay operator in Honolulu that has posted to this list before, on the same subject. I am hoping that some other exit relay operators can sniff for packets to destination port 8118 (usually used for Privoxy) to confirm that they are seeing the same thing I am on all exit relays that I have set up in the last half year. Depending on your network configuration, you might have to instead record firewall logs for that port. Don’t worry, unless you have your Privoxy service open to the world, you won’t be intercepting or eavesdropping on any legitimate traffic. You should just be seeing SYN packets from a few hundred-strong net of Windows servers now hosted at Gorilla Servers, Ubiquity/Nobistech, and Limestone Networks, with a handful at Psychz. I am calling this malicious (?) net of Windows servers Rotpoi$on. I have more details in the most recent blog post at https://b.kentbackman.com Thanks for your help. - Kent

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Fwd: New tor node not acting as an exit server?
by Niles Rogoff 09 Sep '13

09 Sep '13

I scrapped my previous exit node and set up a new one on a different machine. It's been running for 6 and a half hours, but does not have the exit flag. The logs say both my ORPort and DirPort are reachable from the outside, and using arm from a different machine shows two circuits open. >From the config file: ExitPolicy reject 192.168.0.0/16:*,accept *:80,accept *:443,reject *:* Anyone know why my new node isn't being used or recognized as an exit node? Did I forget a config option? Fingerprint: 1e598cdb9bbc751d753146d880b326952886d73b

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Re: [tor-relays] Tor node was doing more traffic than its bandwidthis configured for
by tor＠t-3.net 08 Sep '13

08 Sep '13

Yeah, this must be wrong, then. I put this in the torrc: RelayBandwidthRate 35 MB RelayBandwidthBurst 40 MB and I was looking to limit it to 35-40 "M" as shown in Cacti, which would be MBits. On Sunday 08/09/2013 at 5:38 am, grarpamp wrote: > On 9/8/13, Roger Dingledine <arma(a)mit.edu> wrote: >> >> Are you sure you didn't confuse bits and bytes? Tor counts in bytes. >> >> (The arm monitor, if that's what you're using, counts in bits by >> default.) > > As with real networks and operators, if this is so, then big thank > you to arm people for correctly counting network bandwidth in bps. > No thanks on webhosters and isp's who convert their upstrream > bandwidth contracts into transfer bytes and pass that on to their > customers for their apache logs, thereby spoofing hosted network > *bandwidth* apps like Tor into feeling some silly need to count bytes. > Do wish Tor would speak properly in bits by default. > _______________________________________________ > tor-relays mailing list > tor-relays(a)lists.torproject.org > https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-relays

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Guard failing large amount of circuits
by I 08 Sep '13

08 Sep '13

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Tor node was doing more traffic than its bandwidth is configured for
by tor＠t-3.net 08 Sep '13

08 Sep '13

I updated our node to the RC version some days ago. Earlier today, it started to do a traffic amount that was higher than it had been configured to do in torrc. Torrc was configured for 35M use and 40M burst, but today it went to 50M and stayed there for an hour. Killing it HUP didn't help. I did a service restart on it to bring it back down.

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