Hot answers tagged

4 votes
Accepted

Can Tor nodes know their position in the circuit?

I will add that these statements are within the confines of the protocol. As you mentioned in your question/comment, a single node could use outside resources to determine entry and exit points. ...
user avatar
  • 156
3 votes

If I am running a Middle Tor Node, can I get malware from it?

That's a pretty broad question. It's possible that there could be a bug in Tor or one of the libraries which it uses that would allow someone to attack Tor relays and run malware on them. Under ...
user avatar
  • 10.8k
2 votes

Daily or monthly traffic limit recommended?

In general it is better to have a maximum bandwidth for the users. Tor needs some time until it reaches the maximum bandwidth and this will probably take longer than a day. So it is better to set a ...
user avatar
  • 8,663
2 votes
Accepted

Daily or monthly traffic limit recommended?

Monthly limit would be best. Daily limit would cause it to hibernate more frequently, resulting in more disrupted circuits for users, when your relay shuts down or is unexpectedly no longer in the ...
user avatar
  • 10.8k
2 votes

Why my Tor relay server only use 10-15% of my bandwidth?

Thanks for running a relay. (: Clients choose which relays to use based on their consensus weight. The consensus weight is assigned by the directory authorities after measuring the throughput for ...
user avatar
  • 56
2 votes
Accepted

Why is torrenting over tor discouraged? Can the practice be benifitial to the tor network?

This is a thing... but it's not called Tor. There are a few network protocols that do this stuff. What you describe is probably closest to the I2P network which has torrenting built into it. You ...
user avatar
  • 253
1 vote
Accepted

Configuring my Tor browser to use more than three relays (nodes)

You really shouldn't do this: it can deanonymize you and it increases the load on the Tor network. See: https://www.torproject.org/docs/faq.html.en#ChoosePathLength For a guide on how to modify the ...
user avatar
  • 426
1 vote

Why does TOR not intentionally choose nodes from different countries?

Tor relays ARE chosen from random different countries. You are correct that the relays are chosen at random; tor uses three relays for every connection - the guard (node 1), middle (node 2), exit (...
user avatar
1 vote

How is it possible that tor is using 4 nodes instead of three? Is my secur

In some cases, Tor will make 4-hop circuits because extending a circuit 1 more hop is cheaper than building an entirely new one.
user avatar
  • 532
1 vote
Accepted

How can I limit use of my entry node to certain countries?

As an anonymity network, relays don't learn geographical information of Tor clients (edit: in the general case) so this isn't possible. You could instead run a private bridge, and give out the bridge ...
user avatar
  • 2,648
1 vote

What's the difference between 'secret_id_key' and 'ed25519_master_id_key'?

secret_id_key is an RSA key and ed25519_master_id_key is a Ed25519 key used for Hidden Services v3. Here is what the spec says about it: https://gitweb.torproject.org/torspec.git/tree/rend-spec-v3.txt#...
user avatar
1 vote
Accepted

How to determine which version of tor a node is running

You can download the relay's server descriptor and read the platform line. You can access this at the http://1.2.3.4/tor/server/authority URL for a given relay's IP address if they have their DirPort ...
user avatar
  • 2,648
1 vote

How did Ross William Ulbricht get caught if he was inside the TOR network and did not leave through the exit node?

This defcon 22 talk covers most of the possible ways to get caught using Tor: All tor nodes are known (except bridges). ISP or system administrator can figure out who was using tor at a given time ...
user avatar
1 vote
Accepted

How can you reduce the chances of connecting to a malicious exit node?

The only possible way to avoid malicious exit nodes with a 100% certainty is by whitelisting the exit nodes you know for sure are not malicious (i.e. those that are under your control). The way to do ...
user avatar
1 vote

What is the purpose of the middle node?

Your guard node and especially your exit node have a lot of power. The guard node knows who you are, or at least some basic information about you such as your IP. The exit node sees all your DNS ...
user avatar
  • 11
1 vote

How to see how many people are transmitting traffic through my entry or relay node now (live)?

I believe what you're looking for is Nyx: https://nyx.torproject.org/
user avatar
  • 290
1 vote

Does the exit node see which second node transmitted the given traffic?

Each link in the "chain" of nodes that make up a circuit can see who the previous and next links are, but (absent misconfiguration or attack) no more than that. So the exit node know who sent it the ...
user avatar
  • 552
1 vote

Entry node on virtualbox with linux on usb?

Yes it will work and it will be the same as running it directly on a laptop. There are some caveats though: Tor expects nodes to be stable. If you are regularly rebooting your laptop or VM or ...
user avatar
  • 2,141
1 vote

Can we query a Relay to get its descriptors?

A Tor relay's descriptor is available at that relay as the resource '/tor/server/authority[.z]'. This is useful when you don't know the relay's fingerprint. Using IPredator as an example: http://197....
user avatar
  • 11
1 vote

I've successfully specified my exit node to be US, but Spotify Webplayer still detects a different country. How can I fix this?

Quite a usual situation even with VPN. The reason can be one of three: GeoIP fail - There're a lot of IP-to-location databases, free and paid ones... And even the best ones and even combining the ...
user avatar
  • 5,421
1 vote

What do ORs 'know'?

A node or onion router knows about other nodes what anybody can know. It's the public description of the network. It's the fingerprint, IP, exit policy and some configuration more, and the persistent ...
user avatar
  • 66
1 vote

From a metadata perspective, what does an entry node know about its clients?

Entry nodes generally know your IP address, the IP address of the next hop and and they can see traffic patterns. Tor sends so called cells, they have all the same size and are padded if necessary. ...
user avatar
  • 1,342

Only top scored, non community-wiki answers of a minimum length are eligible