tor-relays September 2014

tor-relays@lists.torproject.org

74 participants
59 discussions

onionoo backend seems to be down.
by jason＠icetor.is 21 Apr '15

21 Apr '15

Hello All, Anyone else notice onionoo and the tools that rely on it (globe.torproject.org atlas.torproject.org) seem to be down? -Jason

5 4

boost CPU on a Tor relay
by s7r 28 Dec '14

28 Dec '14

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, A Tor relay currently going 33MB/s could go a lot faster but CPU is at 93% usage - this is the bottleneck. Here is the output of /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 26 model name : Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz stepping : 5 microcode : 0x11 cpu MHz : 3068.000 cache size : 8192 KB physical id : 0 siblings : 8 core id : 0 cpu cores : 4 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 11 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt lahf_lm ida dtherm tpr_shadow vnmi flexpriority ept vpid bogomips : 6132.24 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: it also goes down to processor 1 - processor 7 Any ideas how this could be boosted? OS is Debian wheezy. No aes-ni hardware acceleration, no openssl benchmarking or customization currently. advices? Thank you. - -- s7r PGP Fingerprint: 7C36 9232 5ABD FB0B 3021 03F1 837F A52C 8126 5B11 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (MingW32) iQEcBAEBAgAGBQJUDuRTAAoJEIN/pSyBJlsRLqYH/iSCtC9r/7/DBCG2qqUGPEgY TELvt+UMGyMP6ncNJH+vDEdHO4BBlSMzFQdj2sKyO3hOT5492cIOaT3gGokaDApL W913yqUkIfiUT6FUWJ6g4/LUt25pMG25Ednr/ZJJXR/pR+Ym3T3ytg+MSwRBmpEe +h26Q7qvd/p4f6VhTR0sEsxQfDLVXrEsj3kn0BL0rLklN5zH/bqmIsK2hio5Nl3H KBvbvyt+JbLhA/4+jygT6AygHDH9arpXWEh3ZcJVn7mE0OmPAvukdlLUj70K5F7r cCeMakcGBbSzit5tY7jUmSvkUewVBhAxAZmv1hgNnuCoSrGPtQZseCbM06cry+k= =TyKF -----END PGP SIGNATURE-----

6 10

Call for obfs4 bridges, and a brief discussion of obfs4proxy.
by Yawning Angel 18 Nov '14

18 Nov '14

Hello everyone, As people who have been following Tor Weekly News or other news sources, I have been working on a new pluggable transport in the obfs-line to better allow censored users to reach the Tor network. The result, obfs4 is what I would consider ready for general deployment[0], and as part of the process there needs to be bridges for the users. To entice people to run obfs4 bridges, I would like to talk briefly about obfs4 and obfs4proxy. I am also planning on doing a blog post about obfs4 some time after I regenerate my experimental TBB snapshots. On obfs4: obfs4 is the next up and coming pluggable transport in the obfs[2,3] line, though in terms of design, a better name would be "ScrambleSuit 2". The main difference is the switch from UniformDH to ntor-with-Elligator2 for the key exchange process, which means that clients strongly authenticate the identity of the bridge (The key exchange succeeding means that the bridge possesses a Curve25519 private key that is known only to the bridge). Additionally the ntor handshake (even with the Elligator2 transform in the picture) is considerably faster than UniformDH which should increase scalability. On obfs4proxy: obfs4proxy is the current obfs4 reference implementation, written in the Go programming language. The use of Go was primarily driven by the availability of an Elligator2 implementation at the time, though it also has other practical benefits over writing it as a component of the python obfsproxy code, for example, it is trivial to run bridges listening on ports < 1024 on modern Linux systems. obfs4proxy implements support for obfs[2,3,4], as a managed tor pluggable transport (no standalone mode currently). Note that obfs2 support is for backward compatibility purposes only and it is discouraged that new obfs2 bridges are run as the protocol is trivially broken by most adversaries. In terms of code stability, we have been running one of the Tor Browser's default obfs3 bridges on obfs4proxy for quite a while with no issues. Similar to ScrambleSuit, obfs4 bridges MUST be running tor-0.2.5.x, otherwise the bridge lines that are published will be useless[1], though people that wish to run obfs3 bridges with obfs4proxy naturally can do so with tor-0.2.4.x. Source: https://gitweb.torproject.org/pluggable-transports/obfs4.git Debian packages (Thanks Lunar!): https://packages.debian.org/sid/obfs4proxy Note: I just tagged/pushed obfs4proxy-0.0.2, but the only significant change is that it is easier to get an obfs4 bridge line to give out to people as the bridge operator. I expect packages to catch up as the wonderful packager has the time. Questions, comments, and bridges appreciated, -- Yawning Angel [0]: https://trac.torproject.org/projects/tor/ticket/12130 [1]: https://trac.torproject.org/projects/tor/ticket/13202

5 12

Failed to load Scramblesuit
by Christian 01 Oct '14

01 Oct '14

Dear fellows, maybe you can help out. And maybe I missed some information on my Tor version. I run an obfuscated bridge (Tor 0.2.5.8-rc (git-eaa9ca1011e73a9d)) on Ubuntu 12.04 and wanted to enable the scramblesuit pluggable transport. When changing my line in torrc to ServerTransportPlugin obfs3,scramblesuit exec /usr/bin/obfsproxy managed I get the following warning in the logs: [warn] The communication stream of managed proxy '/usr/bin/obfsproxy' is 'closed'. Most probably the managed proxy stopped running. This might be a bug of the managed proxy, a bug of Tor, or a misconfiguration. Please enable logging on your managed proxy and check the logs for errors. [notice] Failed to terminate process with PID '18171' ('Success'). Obfs3-only works like a charm without complaints. (ServerTransportPlugin obfs3 exec /usr/bin/obfsproxy managed) I set my ExtORPort to "auto", pyptlib is installed, packages from obfsproxy and pyptlib are in the right locations and I use the shipped apparmor profile for Tor for Ubuntus. Even if I stop apparmor service, I don't get better results. I thought it was a permissions problem somehow as --log-min-severity=debug --log-file=/home/me/obfs.log won't even create the logfile so that obfsproxy fails from the very beginning. But, as I said, obfs3-only works without problems. Any ideas? Thank you in advance. Kind regards christian

2 1

Bandwidth not being used by Tor on Gigabit dedicated server
by Jon Daniels 01 Oct '14

01 Oct '14

Hi, My Tor node is not utilizing the bandwidth available to it. I have tried setting RelayBandwidthRate to various values with no change whatsoever in bandwidth usage. Running for 5 months with 99.77% uptime: https://globe.torproject.org/#/relay/1F6598EA09A82E7A5D3131E71A97C806E6FDA4… My node has used a maximum of about 4MB/s or about 40Mbps. I've been expecting it to use 10MB/sec to 30 MB/sec. It dropped from 4MB/sec to around 1MB/sec now. OS: CentOS 6.x 64bit latest CPU: Xeon E3 1230 MB: Supermicro X9SCL RAM: 8GB Network connection: 1000Mbps Bandwidth tests show the server can easily send or receive hundreds of Mbps. I have tweaked server settings trying to get the speed up to no avail. Tor v0.2.4.24 (git-549ec02c188842f6) running on Linux with Libevent 1.4.13-stable and OpenSSL 1.0.1e-fips. Relevant config: DirPort 9030 # what port to advertise for directory connections RelayBandwidthRate 30 MB # Throttle traffic to 100KB/s (800Kbps) RelayBandwidthBurst 30 MB # But allow bursts up to 200KB/s (1600Kbps) DisableDebuggerAttachment 0 ORPort 443 ExitPolicy accept *:20-23 # FTP, SSH, telnet ExitPolicy accept *:43 # WHOIS ExitPolicy accept *:53 # DNS ExitPolicy accept *:79-81 # finger, HTTP ExitPolicy accept *:88 # kerberos ExitPolicy accept *:110 # POP3 ExitPolicy accept *:143 # IMAP ExitPolicy accept *:194 # IRC ExitPolicy accept *:220 # IMAP3 ExitPolicy accept *:389 # LDAP ExitPolicy accept *:443 # HTTPS ExitPolicy accept *:464 # kpasswd ExitPolicy accept *:531 # IRC/AIM ExitPolicy accept *:543-544 # Kerberos ExitPolicy accept *:554 # RTSP ExitPolicy accept *:563 # NNTP over SSL ExitPolicy accept *:636 # LDAP over SSL ExitPolicy accept *:706 # SILC ExitPolicy accept *:749 # kerberos ExitPolicy accept *:873 # rsync ExitPolicy accept *:902-904 # VMware ExitPolicy accept *:981 # Remote HTTPS management for firewall ExitPolicy accept *:989-995 # FTP over SSL, Netnews Administration System, telnets, IMAP over SSL, ircs, POP3 over SSL ExitPolicy accept *:1194 # OpenVPN ExitPolicy accept *:1220 # QT Server Admin ExitPolicy accept *:1293 # PKT-KRB-IPSec ExitPolicy accept *:1500 # VLSI License Manager ExitPolicy accept *:1533 # Sametime ExitPolicy accept *:1677 # GroupWise ExitPolicy accept *:1723 # PPTP ExitPolicy accept *:1755 # RTSP ExitPolicy accept *:1863 # MSNP ExitPolicy accept *:2082 # Infowave Mobility Server ExitPolicy accept *:2083 # Secure Radius Service (radsec) ExitPolicy accept *:2086-2087 # GNUnet, ELI ExitPolicy accept *:2095-2096 # NBX ExitPolicy accept *:2102-2104 # Zephyr ExitPolicy accept *:3128 # SQUID ExitPolicy accept *:3389 # MS WBT ExitPolicy accept *:3690 # SVN ExitPolicy accept *:4321 # RWHOIS ExitPolicy accept *:4643 # Virtuozzo ExitPolicy accept *:5050 # MMCC ExitPolicy accept *:5190 # ICQ ExitPolicy accept *:5222-5223 # XMPP, XMPP over SSL ExitPolicy accept *:5228 # Android Market ExitPolicy accept *:5900 # VNC ExitPolicy accept *:6660-6669 # IRC ExitPolicy accept *:6679 # IRC SSL ExitPolicy accept *:6697 # IRC SSL ExitPolicy accept *:8000 # iRDMI ExitPolicy accept *:8008 # HTTP alternate ExitPolicy accept *:8074 # Gadu-Gadu ExitPolicy accept *:8080 # HTTP Proxies ExitPolicy accept *:8087-8088 # Simplify Media SPP Protocol, Radan HTTP ExitPolicy accept *:8332-8333 # BitCoin ExitPolicy accept *:8443 # PCsync HTTPS ExitPolicy accept *:8888 # HTTP Proxies, NewsEDGE ExitPolicy accept *:9418 # git ExitPolicy accept *:9999 # distinct ExitPolicy accept *:10000 # Network Data Management Protocol ExitPolicy accept *:11371 # OpenPGP hkp (http keyserver protocol) ExitPolicy accept *:12350 # Skype ExitPolicy accept *:19294 # Google Voice TCP ExitPolicy accept *:19638 # Ensim control panel ExitPolicy accept *:23456 # Skype ExitPolicy accept *:33033 # Skype ExitPolicy accept *:64738 # Mumble ExitPolicy reject *:* In addition, there's another Tor node running at the same ISP (but by a different person), on completely different hardware and a different router, that exhibits the same issue: https://globe.torproject.org/#/relay/50F37822AFA257B24B3343D9BBFB0442E900FB… For background, I built and manage the network both servers are hosted on and have been doing so for 20 years. I also built both servers. The network is at less than 15% capacity, 99% of the time. CPU load is always at 0.00. Based in the USA, west coast. Ideas? Is there simply less demand for tor traffic in the US? Cheers, Jon

4 4

Loki1 and Loki2 closed
by jason＠icetor.is 30 Sep '14

30 Sep '14

Hey fellow ops, Just an FYI today that Icetor lost two of it's fastest two exits that were hosted with Greenqloud here in Iceland, obviously would not recommend them as an ISP in the future regarding exit hosting. About two weeks ago we got notification that abuse notices were breaking their EULA and would be the reason for the termination. Today they shut down the nodes about 5 hours earlier than indicated, no ability to do data migration or save keys. Needless to say I'm not very happy with the entire situation and how it was handled. We'll soldier on with our remaining two exits and ifanyone is thinking of spinning up an exit in the future Icetor is still able to handle abuse contact for the relay. -Jason

1 0

Oniontip
by justaguy 30 Sep '14

30 Sep '14

So, https://oniontip.com is a great help for tor-relay runners We do need more donations imho Whoever made it, thank you - Justaguy

10 15

[warn] No unused circIDs found on channel without wide circID support
by tor-admin 29 Sep '14

29 Sep '14

Hi, since upgrading torland to 0.2.5.8-rc I see the below warnings. Is this something to worry about? Regards, torland -------------------------------------------------------------------------- Sep 28 16:07:24.000 [warn] No unused circIDs found on channel without wide circID support, with 0 inbound and 4 outbound circuits. Found 0 circuit IDs in use by circuits, and 64 with pending destroy cells. (0 of those were marked bogusly.) The ones with pending destroy cells have been marked unusable for an average of 7594 seconds and a maximum of 16137 seconds. This channel is 18469 seconds old. Failing a circuit. Sep 28 16:07:24.000 [warn] Circuitmux on this channel has 4 circuits, of which 4 are active. It says it has 29535 destroy cells queued. Sep 28 16:07:24.000 [warn] Channel 93320 (at 0x7fbff4579d90) with transport TLS channel (connection 3245390) is in state open (2) Sep 28 16:07:24.000 [warn] * Channel 93320 was created at 1411894775 (18469 seconds ago) and last active at 1411913240 (4 seconds ago) Sep 28 16:07:24.000 [warn] * Channel 93320 says it is connected to an OR with digest 4C733BAC82CC609ACC58AD95BFBFF04D5D06188C and no known nickname Sep 28 16:07:24.000 [warn] * Channel 93320 says its remote address is [scrubbed], and gives a canonical description of "[scrubbed]" and an actual description of "[scrubbed]" Sep 28 16:07:24.000 [warn] * Channel 93320 has these marks: !bad_for_new_circs canonical is_canonical_is_reliable !client !local outgoing Sep 28 16:07:24.000 [warn] * Channel 93320 has 0 queued incoming cells and 0 queued outgoing cells Sep 28 16:07:24.000 [warn] * Channel 93320 has 4 active circuits out of 4 in total Sep 28 16:07:24.000 [warn] * Channel 93320 was last used by a client at 0 (1411913244 seconds ago) Sep 28 16:07:24.000 [warn] * Channel 93320 was last drained at 1411913141 (103 seconds ago) Sep 28 16:07:24.000 [warn] * Channel 93320 last received a cell at 1411913240 (4 seconds ago) Sep 28 16:07:24.000 [warn] * Channel 93320 last transmitted a cell at 1411913141 (103 seconds ago) Sep 28 16:07:24.000 [warn] * Channel 93320 has received 234 cells and transmitted 2497 Sep 28 16:07:24.000 [warn] * Channel 93320 has averaged 78.927350 seconds between received cells Sep 28 16:07:24.000 [warn] * Channel 93320 has averaged 7.396476 seconds between transmitted cells Sep 28 16:07:24.000 [warn] failed to get unique circID

2 1

Oniontip
by Sebastian Urbach 28 Sep '14

28 Sep '14

Hi, Mike, your questions are all valid. Remember where this project is coming from. Donncha put this together at the Dublin Bitcoin Hackathon and it was designed to give back a little bit to the Relay Operators. I never expected anything in return for my relays but im glad that onintip exists and the approach seems to be to give everybody a little bit back based on the consensus. Exit operators can get a lot of legal trouble and i acknowledge that but without Middle Relays, Guards, Bridges etc. TOR would not be possible. It seems to be always about the Exit's. There are different organizations for Exit's and now they should be preferred on oniontip.com ? It is hard not to feel like a second class Relay operator when you don't run an Exit. Im happy that there is a possibility like oniontip and btw. there is nothing similar on the torproject website. You can donate to the torproject via bitcoin but there is no way to choose who should receive this donation like you can do on oniontip.com Im not sure if it is necessary for oniontip to provide the best possible distribution of the donations from the projects point of view (diversity etc.) It seems to be a different approach just to give back to everybody and it has a certain amount of charme. It is easy to use and it seems to be working and becoming more and more popular. I like it. -- 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! -----------------------------------------

3 2

(no subject)
by I 27 Sep '14

27 Sep '14

Hej, Reportedly Pirate Bay runs virtual machines in someone else's clouds dodging revealing their IPs because traffic is handled by a load balancer. Why couldn't Tor be run in China, for example, using that method as there are cloud companies there? Robert

1 0

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tor-relays September 2014