Questions tagged [circuit]

A Tor circuit is a private network pathway built incrementally as a series of encrypted connections through relays on the network.

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19 views

What are the botnets that can be used on tor?

I am a student and want to study botnets on tor, so I would like to ask what are the botnets that can be used on tor, preferably controlled through C&C. It would be nice to have the source code of ...
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23 views

Where in the codebase does Tor detect outages?

It seems clear to me that Tor has some facility for discovering when connectivity within a circuit is lost. I'd like to find that point and add a log_debug into it, as the current Tor logging does ...
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What are the current default lengths in Hidden Service related circuits?

I have been trying to understand the process behind Hidden Services and something that is confusing me is the circuit lengths between different components in the Hidden Service Scenario. So far, I ...
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117 views

How TBB commands tor to use a "New Circuit for this Site"?

Tor Browser Bundle has "New Circuit for this Site" button (or Ctrl/Cmd + Shift + L shortcut), doing what it says: changing circuit for specific domain. The question is: how TBB do it? And ...
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Programmatically changing Tor circuit

Is it possible to change Tor circuit using Javascript or configuring it to change Tor circuit in a certain interval?
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Is it possible to completely control your Tor circuit?

I'm pretty new to the community. A "Tor" circuit usually consists of an entry guard, a middle node and an exit. I know that it's possible to change the entry guard manually, but can you also ...
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20 views

Does cross-site AJAX queries use the same circuit established for the origin domain?

If, within the Tor Browser, I'm visiting a.com, and the loaded website does an AJAX query to b.com, will the AJAX query use the circuit established for a.com, or will the browser establish a new ...
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569 views

Tor circuit for this site (-unknown-)

Whatever website I am on, it's never displayed in the "Tor circuit for this site" panel. It always says "(-unknown-)". Is this a problem?
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91 views

Signal NEWNYM vs 'New Tor Circuit for this site '

I'm currently using the NEWNYM signal to programmatically replicate the functionality of changing Tor circuits. However, it seems that this doesn't always function as intended and for certain sites ...
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Are relays chosen by location proximity, e.g. county, for circuit building?

Are relays chosen by location proximity, e.g. county, for circuit building? I know that there exists some rules but I didn't read anything about location. If the location of a client is not ...
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191 views

Does my internet speed matter?

Does my internet speed matter if I use same circuit, nodes/hops? There are 3 PC's: 1st one is connected to 100Mbps internet speed 2nd 500Mbps internet speed 3rd 1Gbps internet speed In case all of ...
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108 views

What if one entity controls all three Tor nodes?

If anybody is able to make themselves a Tor server, what is to stop a security agency from populating the list of Tor servers with many of their own? If they have enough servers there, then might they ...
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How to view Tor circuit while using Tor in Brave?

I know there are many, many security risks when using Tor with the Brave browser. In fact, Brave accidentally leaked users' browsing history to their DNS provider recently (https://twitter.com/...
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153 views

Where to find current circuit in tor browser?

Have been using tor browser in past, upgraded to latest version (10.0.12) and i found that tor button aka. onion icon addon is removed from tor browser since 9.0 - you can find it in changelog here: ...
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Fast/Slow relays in Tor

How does Tor classify fast/slow relays (as in what is the bandwidth bar)? Is the Tor Path Selection protocol biased towards selecting fast relays for circuit construction? (The answer here How does a ...
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How to change the entry node?

When Tor changes circuit it only changes middle node and exit node, the entry node stays the same since the Tor started, so I guess the entry node is limiting the traffic if you make too much traffic,...
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Implementing the tor protocol, based on tor sources and a few clarifications

Im trying to implement a simple C# application that is based on Tor protocol, without identity changes every few minutes etc. just to create a circuit and make a request. I created the onion hidden ...
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64 views

Reusing a Tor "dirty" circuit

I have a couple of questions related to Tor circuits. Let's say that there is a circuit that was used and marked "dirty" and has also expired (no active TCP stream). Can this circuit ever ...
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Determining circuit tor client is using

One can get a list of circuits available for the tor client to use via the ControlPort. Here is the link to a python script someone wrote to get the list of circuits enter link description here Is it ...
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If a client builds a full circuit to the rendezvous point, how can there be 6 hops between client and hidden service?

On https://2019.www.torproject.org/docs/onion-services it says that whenever the client or server contacts the rendezvous point or one introduction point, it always builds a full tor circuit. So, why ...
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Problem getting chutney to configure

I am trying to get chutney running with a basic network configuration and I keep getting a bootstrapping error. I can't figure out exactly why it's failing and I'm hoping someone can help me. Here is ...
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Who creates malicious Tor nodes, why, and how to they work?

I understand the concept of a malicious Tor node, but am confused on a few things. Who makes malicious Tor nodes? I assume non-Tor friendly governments and non-government threat actors. Why would ...
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Disconnect after X minutes inactivity?

I read somewhere its not a good idea to remain connected to TOR network for long periods of time because it gives an attackers more opportunity to de-anonymize. The machine I am using is unatttended ...
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1answer
65 views

Why can't a modified guard node compromise the network?

This is a newbie and probably a lame question but it popped up while I was reading the design doc: https://svn-archive.torproject.org/svn/projects/design-paper/tor-design.pdf If theoretically someone ...
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86 views

Automated script for selecting fast TOR circuit?

I noticed a significant variance in bandwidth with different TOR circuits. Some are fast enough for streaming HD videos, while others take ages just loading web pages unless Javascript is deactivated. ...
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479 views

How to view circuit details (including security keys) in Tor?

I wonder if its possible to find the session keys for Tor's circuit for a hidden service such as facebookcorewwwi.onion (or public site)? There are 4 keys used in connecting to a site: Key between ...
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173 views

Does Tor daemon build multiple circuit when multiple clients connects to it?

Let's say I have a Tor Browser, nodejs and curl all sending requests using Tor's SOCKS5 proxy. Will requests from different clients routed through the same exit node? Or does each client get their own ...
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131 views

Why are entry nodes allowed to know that they are entry nodes?

Right now, a user can be deanonymized if an attacker controls the entry node and the exit node in a Tor circuit. The attacker can discover the IP of the originator, and the site they are accessing. It ...
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Integrating Tor Browser and Python to get the same circute

This is a cross post from my StackOverFlow question(also I little edited). Ok, my question is quite straightforward: I want to use Python to make automated requests with stem (or any other library ...
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283 views

Has Tor Browser stopped displaying circuits?

I started using Tor v4 most intrigued by the display of the circuit path it followed, 4 nodes from at least 2 countries and usually 3 or 4. Now at v9 I don't see it anymore. Has display of the ...
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How does a Tor client pick Tor nodes for circuit creation?

A Tor client initially contacts Directory Authorities to fetch the consensus (i.e. a file containing all relays of the Tor network at that time with details such as IP address, exit policy, public key ...
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Higher probability that nodes with higher bandwidth are selected for circuit

In the course of my master thesis I am currently trying to rebuild a simplified version of the selection algorithm from Tor. During my research, I found the following selection algorithm in some ...
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Why don't we have more than one entry node per tor circuit?

A typical tor circuit has Browser -> entryNode(A) -> relay(B) -> exitNode(C) -> Server This is prone to timing related attacks if both entryNode and exitNode are controlled by the ...
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382 views

Is it possible to team multiple circuits in the current Tor network?

The client-selected paths that carry traffic through the Tor relay network are called circuits. Tor clients switch circuits at ten minute intervals for better anonymity. However, latency and bandwidth ...
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229 views

The problem about stem's new_circuit and extend_circuit?

I have read the document of Stem. I notice that new_circuit() and extend_circuit() can create new circuit.However,I have two problems: I can't make sure when I create a new circuit, will the old ...
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827 views

Tor 8 no longer has Green Onion with option to change circuitcharley

My PC auto-updated to Tor 8 and I no longer have the green onion on the left side of the browser where I can check my circuit or change to a new circuit. Can I roll back to an earlier version of Tor ...
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60 views

Is it possible to make a program that will use different circuit for each request? Even if the requests are parallel?

I want to make a program that will use new circuit for each request (even if the requests are parallel) to avoid linkability. Is it possible?
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140 views

How to configure node restrictions in Tor Browser 8.5.6 for Android?

In Tor Browser for Windows, I can edit the torrc file for things like ExcludeNodes and ExitNodes. In Orbot for Android, there is a settings menu where these can be configured. In Tor Browser 8.5.6 ...
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177 views

displaying streams from onion service to rendezvous point

Using the Linux onioncircuits package or carml monitor, I see circuits for onions that I'm accessing (client-side circuits). I also see circuits for onions that I'm hosting, and accessing from another ...
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7k views

Is the Tor browser always using at Tor ciruit?

I'm using the Tor browser (4.5.3) and when I press the green onion I can see the current Tor circuit that's in use at the moment. Now, is the browser always using a Tor circuit? Because sometimes when ...
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608 views

Why does Torbutton circuit view not consistently show the correct exit node?

Making an arbitrary number of new identities will eventually cause the circuit view in Torbutton to show the wrong exit node. This is a screenshot I took to show the problem. Notice Torbutton thinks ...
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Why is the pub-key of diffie hellmann from Alice (OP) to Bob (OR) encrypted?

For building a circuit Alice contacts Bob (OR) and send her pub diffie-hellmann key encrypted with Bobs pub key. Bob sends his public-diffie-hellmann key and the session key hashed ("only" TLS ...
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2answers
86 views

What prevents CircID collision from happening?

When a Tor OP wants to extend a circuit, it sends a relay extend cell to the last node on it. This node then sends CREATE cell to the desired destination node, choosing a new CircID (used to identify ...
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138 views

Track Tor circuit via ISP logs

I have some question about the very basics of tor, as this keeps bugging me now for some time: As far as I know every tor node is only aware of the ip address of the following node. For example the ...
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2answers
2k views

Stem: How to get current in-use circuit?

I am able to list the circuits, but for some reason I'm never able to quite get a circuit alone consistently, there always appears to be many of them with state BUILT. This is especially true after I ...
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1answer
932 views

Differences between Onion Routing (Public Key) and Tor-Circuit (Session Key)

I have a hard time understanding how a message is transmitted, when the Public Keys are used and when the Session Keys. Tor Client connects to a directory server to get a list of active relays & ...
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1answer
434 views

Share circuit on localhost:9050 to the rest of the internal network

Might be a little off-topic but I don't know maybe it's more related to tor than networking. Basically, I have the following scenario I want to accomplish: home access point is 192.168.1.1, ...
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249 views

customizing tor browser bundle

I want to create a browser bundle that supports the following things: there is a standalone tor process that i launch it using the controller connection from the stem library and i manually connect ...
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circuit_build_no_more_hops: Bug: 2-hop circuit 0x7fd6935ce4c0 with purpose 5 has no guard state

For research, I need to create custom circuits using stem. I ran code, but a warning occurred in Tor application: [warn] circuit_build_no_more_hops: Bug: 2-hop circuit 0x7fd6935ce4c0 with purpose 5 ...
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1k views

How to list all tor circuits that have ever been established

I can get the current with this stem code. #!/bin/python from stem import CircStatus from stem.control import Controller with Controller.from_port(port = 9051) as controller: controller....