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Questions tagged [obfs4]

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Tor not connecting anymore

recently I had to reinstall Tor over two home servers running on two different landlines (thus two different ISPs) and on both the connection fails at 10%. Both servers have been updated to Ubuntu 16....
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What is iat-mode at the end of obfs4's bridge lines?

By looking at a obfs4 bridge, we can see that it ends with iat-mode=x which x can be 0, 1 or 2. Bridge obfs4 1.2.3.4:9443 0F2C3218 cert=FH+9dukjekdfhcn iat-mode=0 What does this iat-mode indicates ...
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1answer
97 views

IS Obfs4 blocked in China now?

My private Obsf4 bridge is "obfs4 205.185.117.208:38571 4C1B1F2F9FF164243E18C571C3920493BA884C64 cert=DXGNrwW4IwFG4zUMzk7GIwP35OTH7iNQ8ZirOublem8eulgLB7vsHQD2V2E0bn2woTdsLQ iat-mode=0" When I tried ...
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1answer
46 views

Why did Tor Client from Browser in Windows cannot connect to Tor Network using a user-provided Tor Bridge Information

My goal: Establish Tor network from Tor Browser (in Windows 10) using a user-provided Tor Bridge. What I did so far: Following this Tor Wiki, I set an obfs4 Tor Bridge up in an Ubuntu 16.04 machine. ...
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Tor bridge with pluggable transports but 0 unique users

I am running a ftp bridge for a longer time now. Has been on obfs4 protocol before. https://metrics.torproject.org/rs.html#details/042A873687F3EC9C69CA1E9113A6C5A9BAC0FF95 It has been down for some ...
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0answers
77 views

Tor Bridge Setup Windows 10

I'm looking to setup a tor bridge on my personal laptop which runs Win10. I know this isn't the optimal hardware or OS to make setup easy, but tor is best when all kinds of users participate, so I ...
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1answer
86 views

No traffic on obfs4 bridge

I am running an obfs4 bridge on my raspberry pi since 10 days now and haven't seen a single client since then. My torrc looks like this: RunAsDaemon 1 ORPort 9001 ExitRelay 0 BridgeRelay 1 ...
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54 views

use obfs4proxy for plain TCP

There is an instruction on how to setup obfs4proxy client and server in https://github.com/madeye/obfs4-tunnel I was wondring if this setup can be used for plain TCP traffic p.s: I am not sure how ...
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0answers
316 views

How does obfs4 work?

First of all, I am already having a working setup of tor as a systemd service that uses obfs4, and using it as proxy by my applications like chrome and firefox, so this is not a question how to make ...
0
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1answer
197 views

Is there anything I should change in a torrc file for a obfs4 bridge

Here is my current torrc file with the contact details and name obscured. Is there anything wrong with it, missing, contradictory, or in need of improvement? After over 6 weeks of running it, ...
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1answer
160 views

First version of TOR with obfs4

I have an application that I run that is security minded. It runs Tor 0.2.5.1 and i was wondering if OBFS4 was added to tor before or after this version, does anyone know? (its daemon and runs in ...
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52 views

Can't start tor server

I try making an Obfs4 brige recently.After I installed tor and Obfs4proxy, I restart tor but fail.My system is Ubuntu 16.04
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141 views

I'm trying to operate a obs4 bridge, any help would be much appreciated

As of now I've been trying to setup a tor bridge, to no avail, for 3 days. Additionally it seems that the log readouts are from the previous day (this shows everytime I run the logs command). Thus far ...
0
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1answer
70 views

Circumvent methods when Directory Authorities censored [duplicate]

I recently become interested in researching about the Tor network and as I read, there are 9 directory authorities which are hard-coded into the Tor software and they are like phone-book which gives ...
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2answers
906 views

Tails 3.0 blocks connection to ANY obfs4 bridge

I've attempted to use six different obfs4 bridge relays and according to the tor log the connection is terminated. using obfs3 does work. any suggestions? Thanks in advance!!
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1answer
1k views

Tails/Tor not connecting to Network using multiple OBSF 3 OR 4 bridges

I have a tails install running off USB running on a laptop with Parrot linux installed. Tor connects fine without bridges. I used welcome screen to set up bridge list and cannot connect. Bridges have ...
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1answer
511 views

can obfs4 bridges bypass china firewall and turkey , iran's block?

can obfs4 bridges bypass china firewall and turkey, iran's block? I know some bridges may not work in those countrys.
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1answer
423 views

What are security implications of keeping same tor bridges versus rotating?

If a set of obfs4 is working fine should they be kept indefinitely as long as they're still working? How would periodically getting a new set of bridges improve security? Potentially compromise ...
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1answer
1k views

OBSF4 and scramblesuit

It seems I can't connect to OBSF4 or scramblesuit bridges with TAILS. I have no troubble with OBSF3 in Tails. Below is some of the error message. Can you guys help me out? Thanks. 10/08/2016 08:32:03....
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1answer
495 views

Using tor on FreeBSD

I followed this method on FreeBSD, however, I receive the following errors and I'm not sure why: The only change made on default tor config file is to uncomment the following line on /usr/local/etc/...
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0answers
18 views

Where can I get my private Obfs4 bridge? [duplicate]

I made a private Obfs4 bridge on my Ubuntu with openVZ on a VPS successfully recently, but I have no idea that what's my bridge and how to find it. I need help, please!
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1answer
899 views

How to use obfs4proxy.exe merely in a console?

I'm trying to use obfs4proxy compiled from Yawning/obfs4, but when I run it in the console, it says [ERROR]: obfs4proxy.exe - must be run as a managed transport I have seen this question. However, ...
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1answer
452 views

find needed details of my own private obfs4 Tor bridge

I've set up a private obfs4 Tor bridge following the official tutorial, PublishServerDescriptor set to 0. /var/log/tor/log shows positive entries so it should be configured correctly. The machine is ...
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1answer
2k views

Configure Obfs4 proxy with tor

I used obfs3 as socks proxy with Openvpn and it was very easy to configure and operate. I want to use obfs4 proxy. I am running Ubuntu 14.10, i have installed latest tor package version (Tor version ...
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1answer
763 views

How can I debug Tor connections to see where obfs4 fails?

Tor connects to private obfs4 bridge, but torbrowser fails I setup a private bridge (Tor 0.2.8.4) and tested it with Tor Browser (6.0.2) successfully. When I enabled obsf4 (0.0.3) in the bridge, ...
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0answers
435 views

Orbot works, but Tor doesn't

I use Tor a lot at work because we have a strict firewall here. Lately my Tor is not able to connect... but Orbot connects normally. I don't know what I supposed have to do... Obs.: Here just meek-...
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1answer
329 views

OBFS4 doesnt connect in iran [duplicate]

I'm using Tor Browser 6.5a1 in Iran. Problem is obfs4 doesn't connect. I already tried using obfs4 bridges but it wasn't helpful. 09/07/2016 07:29:09 ق.ظ.700 [NOTICE] DisableNetwork is set. Tor will ...
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2answers
1k views

problem with obfs4proxy and apparmor (solved)

Finally yesterday I installed ubuntu 16.04 and after that I installed tor and obfs4. I add this line at the end of torrc file: UseBridges 1 Bridge obfs4 82.243.119.185:990 ...
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2answers
643 views

I want to use a private obfs4 tor bridge, without tor

I got my own server somewhere out there in the free internet, and I would like to connect to it via obfs4 and use it as proxy to circumvent local censorship. As far as I know, obfs4 requires a tor ...
0
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1answer
338 views

Can current obfuscators defeat deep packet inspection mentioned in “Seeing through Network-Protocol Obfuscation”?

Wang, L., Dyer, K. P., Akella, A., Ristenpart, T., & Shrimpton, T. (2015, October). Seeing through Network-Protocol Obfuscation. In Proceedings of the 22nd ACM SIGSAC Conference on Computer ...
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2answers
2k views

Could not launch managed proxy executable at '/usr/bin/obfs4proxy' ('Operation not permitted')

For the life of me, I cannot get my tor bridge relay working with obfsproxy, or obfs4proxy. I am running Ubuntu 15.10 with tor v0.2.7.6 (git-605ae665009853bd). Tor starts and bootstraps fine and is ...
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0answers
2k views

How to use Obfs4Proxy [closed]

Right now I'm using obfs3,obfs2 and b64 with my OpenVPN server and sadly they are slow in my country (Iran) These obfuscation methods are slow at morning and they get fast at after noon (I don't know ...
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1answer
1k views

How would I go about making obfs4 a standalone proxy for usage with OpenVPN or other programs?

OpenVPN + obfs3 is a popular combination for censorship circumvention, but it's getting slow nowadays. Obfs4 works great with tor, but Yawning Angel seems to not have enough time to make obfs4 ...
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1answer
1k views

How can I start obfs4proxy.exe without starting Tor Browser?

Under WIN7 platform, when I start tor browser, there is a job running in taskmanager named `obfs4proxy.exe. How can i start it through command-line since I don't need tor browser? By the way, I can ...
2
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1answer
2k views

Tor on computer connects fine using bridges, portable Tor does not

So I'm trying use a java plugin for a game at work. Downloaded portable Firefox/Jportable have it configured with new Java. Wanted to open tor portable and use a separate Firefox portable to use game ...
5
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1answer
2k views

Tor 4.5.3 - obfs4 bridges can't connect to network [duplicate]

I faced a problem when Tor, which used to work for ages at campus of my friend (he updated it regularly), just stopped working one day. I did the following: Downloaded latest Tor at home. Configured ...
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0answers
2k views

Obfs4 bridges in Orbot

I can connect to obfs3 bridges just fine and even meek works, but obfs4 bridges seem to immediately reject my client. The debug log output is of no help. It's almost like Orbot isn't sending the ...
4
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1answer
1k views

Add bridges on expert bundle

I want to add bridges to my expert bundle but have no idea how to create and what to put in the torrc file. First of all, there is no torrc file in the expert bundle, so I assume I have to create it ...
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1answer
507 views

how to run obfs4 in ubuntu as a client?

I wanted to use OBFS4 as a client and not as a server in ubuntu 14.0.4,how can I do it? there were a topic like this on the forum but he wanted to use it as a server not client. thanks a lot.
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2answers
12k views

How to run an obfs4 bridge?

I want to help censored users. How can I run an obfs4 (Pluggable Transport) bridge on a Debian-like GNU/Linux machine?
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1answer
123 views

Can someone explain these bridge stats?

I have these stats: # cat /var/lib/tor/stats/bridge-stats bridge-stats-end 2015-02-13 04:17:28 (86400 s) bridge-ips cn=8,es=8,us=8 bridge-ip-versions v4=8,v6=0 bridge-ip-transports <OR>=8,obfs4=...