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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OR Forward and reverse keys

It's my understanding that between the user and an OR there are two symmetric keys, one for sending data forward and another for receiving data. These keys are forged according to either TAP, which ...
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Tor encryption combination

I'm trying to understand exactly how Tor builds a circuit with encryption. I've read the Tor design literature and have a pretty good grasp on it, however I'm left with the following misunderstanding. ...
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223 views

torsocks over torsocks? (by accident)

Sometimes I'll $ torsocks --shell, then forget I'm in a torified shell and hours later do $ torsocks curl https://website.com. Does torsocks know not to do tor over tor? Is there some kind of idiot ...
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Does Tor choose nodes from nearby countries to create circuits?

I am from a European country, and usually the circuits created by Tor include nearby European countries (although Tor sometimes chooses nodes from remote countries, but this is very rare). My question ...
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956 views

Does tor browser open a new circuit for each unique website?

What is the limit of circuits. For example if I open 100 unique domains will TOR make 100 different circuits or does this have some upper limit?
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Same first node [duplicate]

In TOR Browser 6.5.2 if I do 'New Tor Circuit for this site', I get the same first node and IP address on the new circuit every time I hit new circuit. It always used to differ. If I quit out of TOR ...
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Auto - New Tor Circuit For This Site or New Identity

Building a JS chat for local network. Users are based on IP addresses. I want to open a URL in Tor Browser with a new circuit or a new identity after a set of defined seconds automatically. Is there ...
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How do I verify the Tor Circuit duration? [duplicate]

I'm thinking of having JavaScript code send messages to my server. How do I go about it? Is there a better way? Edit: How do I find out the exact duration for which a Tor circuit exists before ...
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633 views

Tor Circuits vs Channels vs Connection

With respect to Tor source code, what is the different between 1- Circuits 2- Channels 3- Connections And how do they relate to each other? Thanks.
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Fate of Tor circuits upon resuming an hibernated computer

When a user's computer (not a relay) having established Tor circuits goes down into operating system defined states of deep sleep (hibernates) - to be restarted (awoken) at a later time - is state ...
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256 views

Tor and Submarine communications cables

According to the papers leaked by Snowden, the NSA has the ability to intercept communications carried by submarine cables. My question is: does Tor also use these submarine cables? So, can Tor be ...
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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....
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Can I configure tor always to try to use three DIFFERENT countries?

I tried to find an answer to this question but I found none. I think it would be reasonable to be able to use always three DIFFERENT countries in a circuit if possible. Just as simple as that. And it ...
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Looking for Conflux code

I'm looking for source code of Conflux tool, published here. There's statement: 'We implemented the multipath construction and cell sequencing, buffering, and reordering in the Tor source code (...
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Cannot run control.py in order to find IP

I am following this post in order to find the tor exit node IP. Running the proposed script ( see below), I get the error: Traceback (most recent call last): File "/mnt/.rot//ip.py", line 6, in &...
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Tor's circuits behaving in an unusual manner

As I understand it, Tor uses the same circuit for about 10 minutes or as specified in the MaxCircuitDirtiness option in the torrc file. However, I noticed something strange while trying to use curl to ...
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Prevent Changing Exit Node

How to prevent changing exit node when browsing? (same IP address until browser restart) Note that it is not enough for me to specify just certain domains to have one IP - all domain visits must have ...
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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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Using Circuits in Parallel

Is there some easy method to use circuits in parallel in TOR using the STEM API. I wanted to use Website A for Circuit A and Website B for Circuit B. The problem is using threading the event listener ...
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Tor browser 6.5-A1 not showing circuit

i just updated Tor to the newest version (6.5-A1) and i have a problem. since the update, for every site, when i try to look at the circuit, i just see this: While it should be like this While its ...
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Entry Node exactly the same for days. 100 request to change and remains same [duplicate]

I'm worried. I connect to exact same entry node for days. Even after 100 new circuit requests, it hasn't moved. Am I being watched? How can I get TOR to connect to different first node?
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Tor Circuit failed to be created: destroyed

Okay, so I'm running a few experiments on Tor for a course project. I keep on changing different relays to see the effects on response time. But on some of the circuits, I keep on getting this ...
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439 views

How is Path Selection done in Tor?

Can anybody explain how path selection is done in Tor because the man page fail to specify in detail on how certain probabilities are calculated etc. In the man page there are a set of equations: ...
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Circuit failed to establish

I'm trying to build my own circuits using stem: These are three different error messages I get from time to time: Circuit failed to be created: DESTROYED Circuit failed to be created: TIMEOUT Unable ...
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Tor is only assigning circuits from a very limited subset of exit nodes

I am researching Tor, and as part of my research I was curious how many distinct exit relays a real-world client would include in building circuits. For my purposes, I am only interested in US exit ...
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What happens with TCP connections on SIGNAL NEWNYM?

When I send the NEWNYM command tor will build new circuits. I'm wondering what happens with open TCP connections. Will tor wait a certain timeout to give them a chance to close, or do I break those ...
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Tor exit node is Forum spammer [closed]

When I researched the exit node for the tor circuit I was given, I saw that it was a forum spammer. Even after changing my identity , the new exit node was still listed as a forum spammer. Is this ...
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Tor circuit selection

Quick question - is it possible to 'exclude' or 'bypass' certain Tor Circuits? Example: At this moment it shows the circuit as France - Netherlands - France. What I am wondering is, can I tell Tor to ...
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TOR switched bridges

I open TOR with a bridge to a foreign country. During use when I opened a new tab the bridge switched to USA. I never saw this happen before. Is it suspicious or normal activity?
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Tor failed to establish a Tor network connection [duplicate]

Please help me! Tor gets as far as establishing a circuit, then fails. It says: Tor failed to establish a Tor network connection. Establishing a Tor circuit failed (connection timeout - 161.53.160....
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Tor circuit display in Tor Browser - how can it?

If all the nodes in a Tor circuit aren't supposed to know about each other, how can the Tor Browser display the whole circuit? If it knows all the addresses in the chain, can't someone else pull that ...
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Is a Tor or cloudflare update the reason I suddenly getting cloudflared to death?

All of a sudden almost every site, including this one cloudflares me, some I have to refresh the Tor circuit over 50 times to get it to work, and then it it dies within a few mins. The thing is, this ...
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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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I'm building lot's of circuits. What could cause this?

I run a relay. It has a SocksPort listening, but I don’t use it as a client for anything at the moment. It also hosts a hidden service. From time to time I get warnings like this: [warn] Your ...
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Can somebody force my Tor circuits to always start from his "guard node", to access my traffic?

The first node after "my browser" is always the same. I am worried to see that even when asking for "new identity" or "new circuit", it restarts always by the same IP address in France. I have no ...
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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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Tor circuit chaining

Is it possible to use multiple tor circuits chained together? tor_circuit --> tor_circuit --> ... --> tor_circuit I know of a solution on windows using tortilla for windows that allows ...
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Displaying the Tor circuit via terminal

I'm using Debian 7 server. I will try to use proxychains. Is it possible to see the current Tor circuit (IP addresses) via terminal?
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How does Tor client build circuits when using a bridge?

When using a bridge, if my own Tor client builds the circuit, how does it know relays IP addresses (middle and exit IP addresses and their public keys) ? Does it take them from the bridge?
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Login to site.com, request "New Tor circuit for this site", site.com still recognizes original login

Using TorBrowser, login with username and password on site.com (e.g., google, amazon, etc.), then ask TorBrowser for "New Tor circuit for this site." Why does site.com (sometimes) recognize this "new ...
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Can Tor's IP sharing be dangerous?

I am novice to Tor, but before using it I have gone through lot of websites. An article explained that Tor is dangerous the following reason: Consider an IP 1.2.2.2 which was assigned by Tor to user ...
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Tor Browser Bundle (TBB) new circuit versus new identity

I have experimented in the Tor Browser Bundle with the Tor Button's choices of "new circuit for this site" and "new identity". "New circuit" appears to affects only the open tab and creates a new ...
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How does Tor protect against flooding with artificially long circuits

Since the path and the length of a circuit can be chosen by a modified client an attacker could make it arbitrarily long and thus multiply the the impact of his traffic on the network by the amount of ...
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Suddenly my Tor hidden service isn't available

I created a Tor hidden service (a server binded to localhost port and torrc config'd to use the 127.0.0.1 xxxx) for clients to connect to. It was working great for a month or so, and now no one can ...
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745 views

How does TOR extend circuit to a third node?

I am reading the Tor: The Second-Generation Onion Router article and my question is that how TOR extends circuit to a third node? On page 7 of the article,left column, it says: To extend the ...
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Orbot is able to open a circuit, but browser check still doesn't confirm using Tor

According to the Orbot Log the program was able to open a circuit. But if I run a browser check, it still tells me that I am not using tor. I also uses a bridge, but the result stays the same. How ...
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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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First Circuit Server Constant (New Identity) [duplicate]

No matter what I am trying, I can't change the first server in the circuit. Neither "New Identity" nor "New Circuit" or closing the browser will change it. I tried two different tor instances from ...
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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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Programmatically changing Tor circuit

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