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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539 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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How Tor is build and how can someone build something Tor/overlay network or routers?

Things I know: I have been using Tor for like a few years now, and I have a good idea of how "Tor/Onion routing" works. I have gone through the Tor's original paper (by Nick and Roger) and ...
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How to modify the TOR connection timeout?

TOR seems to drop the initial choice and select a new guard node, when it fails to build a circuit/connect to a guard node within a certain time interval (which is in the order of 30-60 seconds). Can ...
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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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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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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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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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38 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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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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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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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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Tor Guard Selection

so I am trying to understand the Tor path selection in more details especially for the entry guard. So i read in the path-spec.txt that there is a bandwidth weighted entry guard selection where 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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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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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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How to run TOR with circuits shorter than the default 3-node circuits

Anonymity is not required for a certain task but a changing exit node is. Might save some public resources and get a shorter ping time by running TOR with 2-node or single-node circuits. How can this ...
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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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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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How to view list of circuit IP addresses and countries on Android?

In Tor browser for Windows, I can view the list of the current circuit's IP addresses and the countries in which they are located, by clicking on the little circled 'i' icon just to the left of the ...
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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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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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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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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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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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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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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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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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560 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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257 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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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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756 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....
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1answer
396 views

Changing in the relay selection in Tor source code

I want to change the Tor relay selection in the SOURCE CODE, I want to tell Tor to select my selected relays in each time it needs to build a circuit instead of randomly selected relays. I know that ...
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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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Tor connection comparison inquiry

I am new to Tor and I have been trying to understand its inner workings. I was wondering how many extra trips across the Internet are in a connection to Tor hidden service compared to directly ...
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2k views

Why Tor doesn't support UDP?

Tor relays reject UDP packets except DNS requests. What is the technical reason behind that UDP is not routed through Tor circuit? Are there limitations with UDP protocol that it cannot be routed ...
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Signal NEWNYM vs Stream isolation

Resources. This answer explains well what happens at NEWNYM request, and I also dig into the code, yet my lack of knowledge on low level networking prevents me to make a proper design decision if ...
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would torify use the same circuit as tbb when both are in operation?

Let's say I'm using both tbb and torify at the same time. For e.g. I'm using tor to browser/look at tor.stackexchange.com. At the same time I am running torify on a different url say https://aaa.bbb....
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Every entry node is in the USA [duplicate]

With this tor version (I can't tell you because it isn't shown anywhere in the browser) every entry node is from the USA only. I'm always trying to avoid any node from USA or little britain. But it ...
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“New Tor circuit for this site” does not work?

I'm using Tor for some time now. It seems that "New Tor circuit for this site" has stopped to work. I use Tor to access libgen.io. When Netherland is the last (before internet) node, no matter how ...
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Relay streaming a large file

I wanted to download a file of considerable size, let us say 10GB and I sent the GET request to a web server to download that file. I then would get downloaded through the Tor network, through the ...
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Hacking Tor through RAM

Is it possible to identify the middle router by extracting data from the RAM of the exit router?
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WARN: Failed to find node for hop 0 of our path. Discarding this circuit

Not exactly what to however I have recently moved to windows 10 and I can no longer use tor. When ever I try to connect, it never moves past 85% and spams 04/07/17 15:52:23 PM.600 [WARN] Failed to ...
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Hacking Tor in my spy/thriller novel

Question: What are plausible circumstances in which one could hack an individual Onion Router to discover the location of the previous router? Reason: I’m an aspiring writer, working on a spy-...
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Data saved in Onion Routers

I’m an aspiring writer, working on a spy-thriller novel with Tor as part of the plot. Is it hypothetically possible to hack an individual Onion Router to discover the location of the previous router? ...