On Tue, May 15, 2018 at 08:12:50PM -0400, Neel Chauhan wrote: > Hi tor-relays mailing list, > > I have noticed that the Tor consensus server tor26 (https://metrics.torproject.org/rs.html#details/847B1F850344D7876491A54892F904934E4EB85D) > is blocked on Verizon's UUNET (AS701) backbone, and therefore, Verizon's > retail services like FiOS and Wireless. I can confirm this on FiOS, but I > don't use Verizon Wireless (my smartphone uses Sprint) so I can't test it > there. > > A traceroute to tor26's IP address 86.59.21.38 from a Brooklyn apartment > shows this is filtered on Verizon's backbone: > > neel@xb2:~ % traceroute 86.59.21.38 > traceroute to 86.59.21.38 (86.59.21.38), 64 hops max, 40 byte packets > 1 unknown (192.168.1.1) 1.128 ms 0.780 ms 0.613 ms > 2 lo0-100.NYCMNY-VFTTP-401.verizon-gni.net (173.68.77.1) 1.001 ms 3.632 > ms 0.900 ms > 3 B3401.NYCMNY-LCR-22.verizon-gni.net (100.41.137.96) 2.291 ms > B3401.NYCMNY-LCR-21.verizon-gni.net (100.41.137.94) 3.172 ms 4.046 ms > 4 * * * > 5 * * * > 6 * * * > 7 * * * > 8 * * * > 9 * * * > ^C > neel@xb2:~ % > > In a normal traceroute, you will see ALTER.NET at hop 5. Also, the subnet > 86.59.21.0/24 is not filtered on UUNET. A traceroute to 86.59.21.1 works: > > neel@xb2:~ % traceroute 86.59.21.1 > traceroute to 86.59.21.1 (86.59.21.1), 64 hops max, 40 byte packets > 1 unknown (192.168.1.1) 0.863 ms 0.757 ms 0.579 ms > 2 lo0-100.NYCMNY-VFTTP-401.verizon-gni.net (173.68.77.1) 1.010 ms 1.545 > ms 1.034 ms > 3 B3401.NYCMNY-LCR-22.verizon-gni.net (100.41.137.96) 3.616 ms > B3401.NYCMNY-LCR-21.verizon-gni.net (100.41.137.94) 5.696 ms 10.062 ms > 4 * * * > 5 0.et-5-1-5.BR3.NYC4.ALTER.NET (140.222.2.127) 3.492 ms 3.506 ms 2.996 > ms > 6 204.255.168.118 (204.255.168.118) 8.462 ms 7.479 ms 7.252 ms > 7 144.232.4.84 (144.232.4.84) 5.041 ms 4.688 ms > sl-crs3-lon-0-6-3-0.sprintlink.net (144.232.9.165) 71.865 ms > 8 sl-crs2-lon-0-0-3-0.sprintlink.net (213.206.128.181) 72.214 ms 73.579 > ms 72.339 ms > 9 213.206.129.142 (213.206.129.142) 81.390 ms > sl-crs4-ams-0-7-0-3.sprintlink.net (213.206.129.139) 85.854 ms 93.238 > ms > 10 217.149.47.46 (217.149.47.46) 79.004 ms 85.669 ms 79.392 ms > 11 ams5-core-1.bundle-ether1.tele2.net (130.244.82.54) 86.507 ms 78.374 > ms 77.740 ms > 12 ams-core-2.bundle-ether9.tele2.net (130.244.82.57) 79.642 ms 77.926 ms > 81.515 ms > 13 wen3-core-2.bundle-ether15.tele2.net (130.244.71.47) 105.400 ms > 105.089 ms 109.751 ms > 14 tele2at-bundle2-vie3.net.uta.at (212.152.189.65) 122.716 ms 110.820 ms > 114.354 ms > 15 86.59.21.1 (86.59.21.1) 106.389 ms * 105.379 ms > neel@xb2:~ % > > I got in contact with Peter Palfrader and he says he couldn't help, and also > with Verizon FiOS support and they said the filtering 'isn't on Verizon's > network' (read: isn't on Verizon's internal FiOS network but still on > Verizon's AS701 which I have to go to to get anywhere on the Internet here). > > I know that this IP could have been blackholed, and you may think that if > Verizon is blocking it, then isn't Level 3 or Cogent? Well, Cogent doesn't > block tor26: > > traceroute to 86.59.21.38 (86.59.21.38), 30 hops max, 60 byte packets > 1 gi0-1-1-19.5.agr21.jfk02.atlas.cogentco.com (66.28.3.113) 0.727 ms > 0.727 ms > 2 be2605.ccr41.jfk02.atlas.cogentco.com (154.54.1.153) 2.177 ms > be2606.ccr42.jfk02.atlas.cogentco.com (154.54.2.29) 0.734 ms > 3 be2490.ccr42.lon13.atlas.cogentco.com (154.54.42.86) 68.557 ms > be2317.ccr41.lon13.atlas.cogentco.com (154.54.30.186) 70.829 ms > 4 be12488.ccr42.ams03.atlas.cogentco.com (130.117.51.42) 74.570 ms > be12194.ccr41.ams03.atlas.cogentco.com (154.54.56.94) 76.767 ms > 5 be2434.agr21.ams03.atlas.cogentco.com (130.117.2.241) 74.515 ms 74.612 > ms > 6 149.6.129.250 (149.6.129.250) 80.758 ms 74.625 ms > 7 ams5-core-1.bundle-ether1.tele2.net (130.244.82.54) 75.421 ms 75.425 > ms > 8 ams-core-2.bundle-ether9.tele2.net (130.244.82.57) 74.516 ms 74.558 ms > 9 wen3-core-2.bundle-ether15.tele2.net (130.244.71.47) 97.605 ms 95.470 > ms > 10 tele2at-bundle2-vie3.net.uta.at (212.152.189.65) 100.314 ms 97.947 ms > 11 86.59.118.145 (86.59.118.145) 96.918 ms 98.620 ms > 12 tor.noreply.org (86.59.21.38) 97.853 ms 98.110 ms > > (Source: http://www.cogentco.com/en/network/looking-glass) > > It could be possible that other Tier 1 networks formerly blocked tor26, and > also unblocked, but Verizon was sloppy not to do so. > > It's also possible that Verizon could be doing it because the FCC repealed > Net Neturality, and wants to discourage use of Tor to mine FiOS/VZW > customers' browsing habits. But despite a NN repeal I can still access Tor > on FiOS, and also run a relay (I do both) because other consensus relays are > still unblocked. > > But if Verizon didn't unblock tor26, could it actually mean that Verizon > wants to discourage Tor (and VPN/proxy) use to try to mine information of > their customers (and sell ads/information) and direct users to VZ-owned AOL > and Yahoo? Well, I hope they were just sloppy and don't mean to wage war on > Tor. > > While I'm not saying you should avoid using anything Verizon at all costs (I > certainly wouldn't want to go to the local cable company), I just want to > point out a blocked consensus server. I'm seeing the same thing from the greater Baltimore, MD area: traceroute to 86.59.21.38 (86.59.21.38), 64 hops max, 40 byte packets 1 172.16.3.1 (172.16.3.1) 0.172 ms 0.162 ms 0.115 ms 2 lo0-100.BLTMMD-VFTTP-323.verizon-gni.net (100.16.216.1) 23.228 ms 7.782 ms 2.901 ms 3 B3323.BLTMMD-LCR-22.verizon-gni.net (100.41.222.240) 2.982 ms B3323.BLTMMD-LCR-21.verizon-gni.net (100.41.222.238) 1.702 ms B3323.BLTMMD-LCR-22.verizon-gni.net (100.41.222.240) 7.756 ms 4 * * * 100.41.222.240 is AS19262. Thanks, -- Shawn Webb Cofounder and Security Engineer HardenedBSD Tor-ified Signal: +1 443-546-8752 Tor+XMPP+OTR: lattera@xxxxxxxxxxxxxx GPG Key ID: 0x6A84658F52456EEE GPG Key Fingerprint: 2ABA B6BD EF6A F486 BE89 3D9E 6A84 658F 5245 6EEE
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