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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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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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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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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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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453 views

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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2k views

Tor and circuits

I'm running Tor and need to know an IP address of my latest node. There is my config: # This file was generated by Tor; if you edit it, comments will not be preserved # The old torrc file was ...
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46 views

Pre-built circuits for a predicted port

According to the Tor documents, Tor builds 2 circuits for each predicted port. I checked the source code to find out how it can understand that it has already built one or two circuit for a predicted ...
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52 views

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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92 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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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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137 views

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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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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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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718 views

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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337 views

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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Weighted Bandwidth for Rendezvous Points

I wonder how the WeightedBandwidth for Rendezvous Points (RPs) is calculated. I know, its a bit complicated, because RPs are chosen in a lot of different ways: Tor tries to reuse existing circuit ...
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1answer
635 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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1answer
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Tor daemon is frozenn ( Rend stream is 120 seconds late.)

Good day, i have some problem with tor daemon on Linux. i use tor daemon to proxy access some site, but periodic tor is frozen, and can't proxy requests. in logs i seee only this. Oct 07 02:29:54 Tor[...
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1answer
27 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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1answer
54 views

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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1answer
26 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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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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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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28 views

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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35 views

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
73 views

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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60 views

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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30 views

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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515 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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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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1answer
80 views

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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1answer
202 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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139 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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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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634 views

Why does this website is taking infinite time to load on Tor Broswer?

http://www.hao123.com/ The above mentioned website is taking infinite time to load in the Tor Browser. However if I open it without using Tor, it loads instantaneously. Any guesses why this behavior? ...
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3k views

Tried for 120 seconds to get a connection to [scrubbed]:6667 (waiting for controller)

I'm running some experiments using the stem library where I change circuit paths fairly frequently. Every so often, I get a stream detached event and a Socks5Error: 'TTL Expired' in my Python script, ...
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26 views

Tor Browser's "new circuit": SSL session, DNS cache, and other details

If I understand correctly Tor Browser's "new circuit" attaches new connections to a new circuit while letting old connections finish in the old circuit. It does not clear out cookies, so ...