Questions tagged [relays]

Questions relating to relays, their maintenance, and operation.

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18 votes
4 answers
13k views

Is it possible to make the Tor onion-routing path longer?

By default, Tor uses an onion-routing path with three hops: entry, relay (middle) and exit. Is it possible to configure (or, if necessary, recompile) Tor to use more than three hops? This would lessen ...
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15 votes
0 answers
12k views

Why is the first ip address Tor goes to the same one in Germany? [duplicate]

Every time I start Tor or switch to a new identity, the first web address in the list of Tor circuit connections is (Germany) 93.180.156.84. Is Tor supposed to work this way? I was under the ...
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  • 361
5 votes
11 answers
3k views

First node always the same! Is that how it's supposed to work?

I'm using Tor-browser-bundle with Vidalia. Yesterday, just out of curiosity, I clicked on "view the network." In the "connection" box, I see my circuits. About 5, 6 circuits each with 3 different ...
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  • 51
14 votes
2 answers
1k views

Best way to set up a Tor lab?

What would be the best [and cheapest] way to set up a private Tor network for testing and experimentation? A rough size estimate is that it should consist of 12 or more onion-routers and should be ...
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31 votes
2 answers
15k views

What are good explanations for relay flags?

We received an Atlas patch that adds tooltips to relay flags, so that relay operators can better understand what these flags mean. The patch author used dir-spec.txt as their guide. I wonder if ...
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  • 1,459
4 votes
1 answer
5k views

Tor on linux - how to select exit nodes manually

On windows, there is an application called Advanced Onion Router (or, AdvOR) which lets you choose your tor exit nodes, and it lists them all out. This is great, because some exit nodes have ...
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3 votes
1 answer
192 views

How to know the number of circuits through my middle Tor relay?

I am running my Tor relay as middle relay. Is it possible to know how many circuits are there through my middle relay?
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  • 657
21 votes
1 answer
1k views

What are the implications of a Relay hosting a Hidden Service?

Are there any implications if whilst running a non-exit relay, I also use the same machine to host a Hidden Service? Specifically: How will this affect the anonymity of the Hidden Service (in terms ...
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  • 2,650
10 votes
2 answers
331 views

Would running Tor client and Tor relay simultaneously harm my anonymity?

If I run a Tor relay in a machine and at the same time I use the same instance as a Tor client, would that harm my anonymity ? Would it be better to use different Tor instances on the same machine? ...
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  • 2,614
3 votes
3 answers
19k views

list of all the entry nodes

I need to know the list of all entry nodes. Is it possible to do this? I found here https://www.dan.me.uk/tornodes a list of all nodes or only exit nodes but I only need entry nodes.
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7 votes
2 answers
950 views

Is there a way to have a Tor relay use more bandwidth as certain times of the day?

I have Tor set up on a Raspberry Pi dedicated to just Tor. I provide what bandwidth I can during the day so that it doesn't interfere with my online activities. I would like to provide most if not all ...
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  • 71
6 votes
2 answers
458 views

Should I run fast Tor relay or a stable relay is fine?

I recently started a Tor Relay on my own VPS. It has 500GB bandwidths each month, and I limited bandwidth rate to 1500 KBytes. I don't know which one is better for Tor network: Running a fast relay ...
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  • 61
4 votes
1 answer
501 views

Where along the path is encryption used?

This question is born out of two questions that I saw coming up. Is the connection between my computer and the Tor network encrypted? How does Tor encrypt my traffic before it sends it to the server?...
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  • 2,642
14 votes
1 answer
2k views

Is there a list of illegal Tor areas?

I just moved to Singapore and I'm wondering if it's a good idea to use the Tor browser (without a bridge) and run a relay (not an exit node). I realize that this question could be repeated for any ...
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  • 455
5 votes
3 answers
4k views

How do I set up a Tor relay as a docker container?

How do I use Docker to run a Tor middle/guard relay so that I can easily stay up-to-date with the latest software changes?
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  • 290
16 votes
1 answer
6k views

Why does Tor use three hops, instead of two?

With onion-routing a relay in a circuit only knows its predecessor and its successor, while a "normal" proxy is just one hop, so that it knows who connects to it and where it has to connect to. ...
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  • 2,642
11 votes
1 answer
1k views

How is data sent back from exit node to me?

I understand how the client sends the data through Tor to the sever. Onion routing Basically, it selects a set of nodes to form a circuit, say nodeA nodeB nodeC. It then encrypts the data this way: ...
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  • 213
4 votes
0 answers
83 views

How to know the number of circuits through my Tor relay(OR)? [duplicate]

Can anyone tell me how to know how many circuits are being build through my Tor relay(OR)? I am using vidalia.
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  • 657
11 votes
1 answer
3k views

What are the minimum requirements for running a relay?

If I want to create a bunch of Tor relays running Linux with various VPS providers and want to save on cost, what is the minimum hardware config that I can get away with while still effectively ...
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10 votes
1 answer
788 views

Do all relays in a circuit encrypt data response from a server?

I know that when sending data from the Tor client to a server it is encrypted and gradually get decrypted on the way there. This question is about when the server responds. The data must be encrypted ...
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  • 500
10 votes
4 answers
4k views

Is it possible to setup a private TOR relay

I have a proxy setup on one of my machines which is behind a router. And I need to use that proxy from another network. But my problem is that I cannot forward ports from the router to the proxy ...
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5 votes
1 answer
6k views

Does the Tor Browser Bundle cache relay information?

When I restart the Tor Browser Bundle shortly after I've closed it I have the impression that relay information load faster. So I assume that the information about running relays is cached somehow. Is ...
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  • 8,663
8 votes
2 answers
2k views

How does having a dynamic IP for Tor relay affect its metrics?

I'm running a Tor non-exit relay on a network with a dynamic IP that changes every day. What is the update on how this can affect the metrics of my relay (mainly the stable flag, uptime, consensus ...
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  • 708
7 votes
2 answers
867 views

What is the most appropriate kind of hardware to run a Tor relay on?

In the purpose of setting up a Tor relay that makes good use of a fast FTTH connection, what computer will do the job most efficiently at the time of writing, provided the following requirements are ...
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  • 323
7 votes
2 answers
4k views

Port Reachability Test Failed _ detailed info

I am currently connected to Tor Network, according to Vidalia. When i tried to set up a non-exit relay, i got the following errors: Server Port Reachability Test Failed - Your relay's server port is ...
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4 votes
1 answer
3k views

What is the criteria for the V2Dir flag appearing?

I've just read What are good explanations for relay flags? to get a feel for what flags could possibly appear on my new relay (which is an image from Tor Cloud, but with torrc modified to be a relay ...
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  • 324
4 votes
3 answers
3k views

Can tor nodes (entry, exit, others) store IPs?

I'm a new Tor user. And I want to ensure several questions. Can "entry point" router store my IP? Can "middle relay" store "entry point" IP? Can "exit point" router store "middle relay" IP? I think ...
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  • 41
3 votes
2 answers
864 views

What would happen if I'm the last node (or relay) of a highly illegal activity?

Let's say I'm using Tor in order to anonymize my traffic, but only for privacy sake. I'm not torrenting, cracking or don't illegal things (of course). Now let's say that a very famous hacker or ...
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  • 133
3 votes
3 answers
2k views

Too much Not anonim Exit Nodes on the TOR Network!

Many exit nodes are not anonym. It says "Hi I'm a Proxy Or Hi I'm a Tor Exit Node on host name". Here is a test site: http://ipcim.com/hu/. Host names: TOR-EXIT.CYLAB.CMU.EDU sipb-tor.mit.edu ...
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3 votes
1 answer
302 views

Arm for Tor Relay Bandwidth Descrepancies

I'm running a Tor Relay on a Raspberry Pi running Raspbian. I installed Arm as to monitor bandwidth. The line that says "Bandwidth (limit: 800.0 Kb/s, burst: 1.5 Mb/s, measured 160 b/s)" claims my ...
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  • 933
11 votes
1 answer
2k views

Can anybody explain the Advertised bandwidth, MaxAdvertisedBandwidth, Measured bandwidth, Bandwidth burst, RelayBandwidth rate?

I am confused about a few terms: AdvertisedBandwidth, MaxAdvertisedBandwidth, MeasuredBandwidth, RelayBandwidthBurst, RelayBandwidthRate, BandwidthBurst, and BandwidthRate. Can anyone please explain ...
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  • 657
6 votes
3 answers
984 views

Why isn't there any such option - middle-relay behind NAT?

Why is it still required have two open ports, DirPort and OrPort, for a relay? Imagine such a situation. A Tor user with unlimited network traffic and with that kind great bandwidth stay behind a NAT ...
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5 votes
3 answers
5k views

How can I run a relay on Windows?

As the question says, how can I run a relay on Windows XP or Vista? I have looked and can't find a solution. I did run one from an Android tablet but that is not always on. My PC's are running 24/7 ...
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5 votes
1 answer
3k views

How do I get a list of tor relays?

I see that some websites such as this one have a complete list of all tor relays. How do they dynamically find all of the relays in the tor network?
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4 votes
2 answers
2k views

Where does tor look for directory servers?

I'm working on a project and need to determine how tor determines directory authorities. Looking at the source of version 0.2.8.0-alpha-dev (git-d015c70a118e4357) in file or/config.c there are a ...
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  • 345
3 votes
3 answers
555 views

Relay getting traffic showing as unreachable?

UPDATE: See my answer below for instructions, I added a Dynamic DNS and added that as the "Address" in torrc. Once I did that I got the "Self-testing indicates your ORPort is reachable. Excellent." ...
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3 votes
2 answers
6k views

How to make Tor relay's ORPort reachable?

I have Tor expert bundle v0.2.8.7. I'm trying to configure a relay under Windows 7. After a day of work the relay is still not reachable: Nov 13 20:08:14.000 [warn] Your server (xx.xx.xx.xx:9001) ...
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  • 151
2 votes
0 answers
163 views

Are there any good practices to keep my Tor relay's private key safe? [closed]

Assuming that I run a Tor relay on a virtual private server running linux, are there any good practices to keep my relay's private key safe? We can take for granted that software packages constantly ...
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  • 2,614
2 votes
2 answers
1k views

Setting up non-exit Tor relay on Linux Debian Stretch

The server is running Linux Debian Stretch (9, testing). I have installed tor as follows: I created APT file for Tor: sudo nano /etc/apt/sources.list.d/tor.list I entered these lines: deb http://...
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2 votes
0 answers
2k views

Setting up Tor relay and port reachability test failed error message [closed]

Greeting earthlings, I am attempting to set up Tor relay and the only issue I am encountering is a message stating that Server Port Reachability test failed and directory port reachability test ...
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2 votes
1 answer
216 views

Tor is making me an exit node despite configuration?

I am trying to create a non-exit relay. I have edited the torrc file to ExitPolicy reject *:*, but when I monitor my connection in arm it lists my relay nickname as an "EXIT" in multiple circuits. Is ...
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  • 21
2 votes
1 answer
240 views

Windows Tor Browser Bundle check if relays is off

I read an article (about that Tor underground raid)) in that articel they said that installing the Tor browser bundle could be dangerous as it acts also as an relay and that illegal data could be ...
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1 vote
2 answers
188 views

How does Tor pass my traffic around and should I be worried about malicious relay operators? [closed]

I am not sure how does Tor work, how safe is it as I heard that some relays are ran by bad people or government agencies.
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1 vote
1 answer
131 views

How do bridges defend themselves against targeted scans?

Running a Tor Bridge recommends using port 443 and even when running a bridge using a pluggable transport an open (non-transport) bridge port seems to be required. Assuming someone runs obfs4 and a ...
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  • 1,182
1 vote
1 answer
521 views

Why does Tor Browser sometimes choose one entry guard (most of the time), but sometimes it choose two or three entry guards?

Some days ago I opened a thread asking how many entry guards Tor Browser currently picks. I found out, with help from forum volunteers, that the current source code of the stable version of Tor (0.2.9....
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  • 107