Onion Browser — уникальный бесплатный браузер для устройств на iOS. Он имеет открытый начальный код и основан на Tor. Onion Browser обеспечивает больше сохранности и конфиденциальности при подключении к вебу без доп издержек. The Daily Dot, 14 октября года. Видеофайлы и видеопотоки блокируются по умолчанию и не поддерживаются Onion Browser. Ежели приложение не подключается, попытайтесь употреблять мосты. Ежели вы уже используете мост, попытайтесь иной типа моста. Вы также сможете принудительно закрыть и перезапустить приложение.
Помните, что конфиденциальные данные не постоянно уместно хранить на мобильном устройстве. На веб-сайте onionbrowser. I would take the ugly UI over this new fancy UI, since it worked better. I found on the settings a duckduckgo lite. From what I have seen, it behaves the same way that the PC Tor Browser does, offering many of the same features, security and anonymity.
These days, in an extremely mobile world, Tor on mobile is much more important than Tor on a computer, and I believe that most people believe the same. Literally the only issue I have with this browser, is the fact that if the app spends longer than a few seconds in the background, it will lose its connection to the Tor Network, forcing us to force quit the app and re-launch it. I understand the limitations and the technical stuff with iOS, and that is the reason for this, but if there were a workaround that could be implemented, that would be fantastic.
Because of the app losing its Tor connection, and requiring a force quit to reconnect, it causes me to lose anything and everything I am doing online, which is a real set back. Other than that, it is the best Tor Browser I have used. Use the official Tor browser on desktop. Without this browser being able to disable java script entirely, it totally defeats the purpose and is useless to anyone who values their safety and security on the darknet.
Разраб Mike Tigas указал, что в согласовании с политикой конфиденциальности приложения данные могут обрабатываться так, как описано ниже. La седьмой 7-й класс практического теоретического курса "Изучение сценариев оболочки" мы будем учить, как через Сценарий мы можем достигнуть легкого установка и настройка запрограммирован из узнаваемых и нужных Интернет-браузер Tor Browser , при этом, как постоянно, мы вкладываем драгоценное время осознание того, как работает любая строчка, любая команда, любая переменная, чтоб осознать и изучить сценарии оболочки.
Но для тех немногих, кто соображает, уточним, что это Браузер Tor. Он обеспечивает анонимный маршрут через прокси-серверы для наших интернет-коммуникаций и отлично предотвращает анализ наружного трафика. Таковым образом, с помощью Tor может быть установить соединение с хостом практически незаметно, то есть без того, чтоб он либо кто-нибудь иной имел возможность выяснить наш IP.
Но в Tor Browser , его создателям удалось все упростить, спроектировав крепкое и надежное приложение пакет в единой форме, то есть со всем нужным для немедленной работы в любом дистрибутиве. Tor Browser Он чрезвычайно прост в использовании, опосля установки и пуска для вас фактически нечего настраивать, ежели вы не чрезвычайно продвинутый юзер либо параноик в отношении сохранности и конфиденциальности.
Вот сценарий оболочки Bash:. Преимущество этих скриптов в том, что они разрешают Mozilla Firefox como el Tor Обзор r настроены таковым образом, что разрешить обновление того же , как это делается в окнах. То есть открытие Клавиша меню на панели чудо-кнопок, открытие меню справки значок вопросца и во всплывающем окне О програмке Он сканирует ожидающие обновления, и обновление выполняется прозрачно, как в Windows. Помните, что в случае сотворения Сценарий Пример: микроско- скрипт-тор-browser.
И наименее чем через 30 секунд у вас все будет в порядке. Опосля этого вы сможете передвигаться по хоть какому сайт с избранной вами версией браузера Tor Browser. До последующего поста, который будет о LibreOffice. Я оставляю вас с данной для нас новейшей публикацией и интересной задачей анализа и исследования.
Содержание статьи соответствует нашим принципам редакционная этика. Чтоб сказать о ошибке, нажмите тут. Ваш электронный адресок не будет размещен. Хотя браузер Firefox, приспособленный проектом TOR для работы с веб-сайтами с. Чтоб пользоваться преимуществами TOR и При этом не следует предоставлять компрометирующую информацию, есть рекомендации: 1. Никогда не посещайте одни и те же веб-сайты на одном компе сразу, чередуя обыденную и луковую сети.
Жертвуй, развивай, пользуйся, вноси собственный вклад!
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Linked Related Hot Network Questions. Question feed. Then you can install this addon for Firefox or the add-on for Chrome which will let you become a Snowflake proxy. It can also inform you about how many people you have helped in the last 24 hours. Users in China need to take a few steps to circumvent the Great Firewall and connect to the Tor network. First, get an updated version of Tor Browser: send an email to gettor torproject.
After installing Tor Browser, you will probably not be able to connect directly to the Tor network, because the Great Firewall is blocking Tor. Therefore, the second step will be to obtain a bridge that works in China.
If one of these options above is not working, check your Tor logs and try another option. Tor prevents eavesdroppers from learning sites that you visit. However, information sent unencrypted over the internet using plain HTTP can still be intercepted by exit relay operators or anyone observing the traffic between your exit relay and your destination website.
For the most in-depth resource on running a relay, see the Relay Setup Guide. Bridge operators can check which mechanism their bridge is using, on the Relay Search. Operators can also choose which distribution method their bridge uses. To change the method, modify the BridgeDistribution setting in the torrc file to one of these: https, moat, email, none, any.
Read more on the Bridges post-install guide. The simplest example is an attacker who owns a small number of Tor relays. There are also some downsides to running a Tor relay. It is an open research question whether the benefits outweigh the risks. A lot of that depends on the attacks you are most worried about. See portforward. If your relay is running on a internal net, you need to setup port forwarding.
Forwarding TCP connections is system dependent but the firewalled-clients FAQ entry offers some examples on how to do this. You may have to change "eth0" if you have a different external interface the one connected to the Internet. If you do decide to run more than one relay, please set the "MyFamily" config option in the torrc of each relay, listing all the relays comma-separated that are under your control:.
That way, Tor clients will know to avoid using more than one of your relays in a single circuit. If you are unable to guarantee that, Snowflake is a better way to contribute your resources to the Tor network. The parameters assigned in the AccountingMax and BandwidthRate apply to both client and relay functions of the Tor process. Thus you may find that you are unable to browse as soon as your Tor goes into hibernation, signaled by this entry in the log:.
The solution is to run two Tor processes - one relay and one client, each with its own config. One way to do this if you are starting from a working relay setup is as follows:. All outgoing connections must be allowed, so that each relay can communicate with every other relay.
In many jurisdictions, Tor relay operators are legally protected by the same common carrier regulations that prevent internet service providers from being held liable for third-party content that passes through their network. Exit relays that filter some traffic would likely forfeit those protections. Tor promotes free network access without interference. Exit relays must not filter the traffic that passes through them to the internet.
Exit relays found to be filtering traffic will get the BadExit flag once detected. Each Tor relay has an exit policy that specifies what sort of outbound connections are allowed or refused from that relay. The exit policies are propagated to Tor clients via the directory, so clients will automatically avoid picking exit relays that would refuse to exit to their intended destination.
This way each relay can decide the services, hosts, and networks it wants to allow connections to, based on abuse potential and its own situation. The default exit policy allows access to many popular services e. You can change your exit policy by editing your torrc file. This setting means that your relay will be used for relaying traffic inside the Tor network, but not for connections to external websites or other services.
If you do allow any exit connections, make sure name resolution works that is, your computer can resolve Internet addresses correctly. If you allow exit connections, some services that people connect to from your relay will connect back to collect more information about you. For example, some IRC servers connect back to your identd port to record which user made the connection. Also, users exiting from you might attract the attention of other users on the IRC server, website, etc.
Another reason is that groups who scan for open proxies on the Internet have learned that sometimes Tor relays expose their socks port to the world. We recommend that you bind your socksport to local networks only. In any case, you need to keep up to date with your security. See this article on security for Tor relays for more suggestions. BandwidthRate is the maximum long-term bandwidth allowed bytes per second. For example, you might want to choose "BandwidthRate 10 MBytes" for 10 megabytes per second a fast connection , or "BandwidthRate KBytes" for kilobytes per second a decent cable connection.
The minimum BandwidthRate setting is 75 kilobytes per second. BandwidthBurst is a pool of bytes used to fulfill requests during short periods of traffic above BandwidthRate but still keeps the average over a long period to BandwidthRate. For example, if you choose "BandwidthBurst KBytes" and also use that for your BandwidthRate, then you will never use more than kilobytes per second; but if you choose a higher BandwidthBurst like 5 MBytes , it will allow more bytes through until the pool is empty.
Otherwise, you could drop many packets during periods of maximum bandwidth usage - you may need to experiment with which values make your connection comfortable. Then set BandwidthBurst to the same as BandwidthRate. Linux-based Tor nodes have another option at their disposal: they can prioritize Tor traffic below other traffic on their machine, so that their own personal traffic is not impacted by Tor load.
Additionally, there are hibernation options where you can tell Tor to only serve a certain amount of bandwidth per time period such as GB per month. These are covered in the hibernation entry below. On relay search we show an amber dot next to the relay nickname when this is overloaded. This means that one or many of the following load metrics have been triggered:. Note that if a relay reaches an overloaded state we show it for 72 hours after the relay has recovered.
Consider tuning sysctl for your system for network, memory and CPU load. Consider enabling MetricsPort to understand what is happening. If you are experiencing TCP port exhaustion consider expanding your local port range. You can do that with. Keep in mind that tuning sysctl as described is not permanent and will be lost upon restart.
To understand the well-being of Tor relays and the Tor network it is vital to provide and have access to relay metrics. Relay overload information has been added to relay descriptors since 0. Tor provides access to the metrics port via a torrc configuration option called MetricsPort.
Please take extra precaution and care when opening this port, and close it when you are done debugging. You can enable the metrics port adding this to your torrc file:. Note: every user on that server will be able to access those relay metrics in the example above.
In general, set a very strict access policy with MetricsPortPolicy and consider using your operating systems firewall features for defense in depth. Tor is sadly single threaded except for when the "onion skins" are processed. The "onion skins" are the cryptographic work that needs to be done on the famous "onion layers" in every circuits.
When tor processes the layers we use a thread pool and outsource all of that work to that pool. It can happen that this pool starts dropping work due to memory or CPU pressure and this will trigger an overload state. However, we realized during the 0. However, we still keep DNS metrics around to give the relay operator insight into what is going on with their relay. The relay might need more RAM or it is leaking memory. If you noticed that the tor process is leaking memory, please report the issue either via Tor gitLab or sending an email to the tor-relays mailing list.
Thus, let say tor thinks it can use 2GB in total then at 1. That is considered an overload state. To estimate the amount of memory it has available, when tor starts, it will use MaxMemInQueues or, if not set, will look at the total RAM available on the system and apply this algorithm:. Because tor takes the total memory on the system when it starts, if the overall system has many other applications running using RAM, it ends up eating too much memory.
These lines indicate the relay is running out of sockets. The solution is to increase ulimit -n for the tor process. Try to tune sysctl as described above. If this counter is incremented by some noticeable value over a short period of time, the relay is congested.
It is likely being used as a Guard by a big onion service or for an ongoing DDoS on the network. You can encrypt your email using network-report OpenPGP key. Instead, consider running your exit relay in a commercial facility that is supportive of Tor. Of course, you should avoid keeping any sensitive or personal information on the computer hosting your exit relay.
This tells Tor to avoid exiting through that relay. In effect, relays with this flag become non-exits. Please reach out to the bad-relays team so we can sort out the issue. The accounting options in the torrc file allow you to specify the maximum amount of bytes your relay uses for a time period. This specifies when the accounting should reset. For instance, to setup a total amount of bytes served for a week that resets every Wednesday at am , you would use:.
This specifies the maximum amount of data your relay will send during an accounting period, and the maximum amount of data your relay will receive during an account period. When the accounting period resets from AccountingStart , then the counters for AccountingMax are reset to 0. It will keep track of how quickly it used its quota in the last period, and choose a random point in the new interval to wake up.
This way we avoid having hundreds of relays working at the beginning of each month but none still up by the end. Just divide your monthly amount by For example, if you have 50 GB to offer each way, you might set your RelayBandwidthRate to KBytes: this way your relay will always be useful for at least half of each day.
Tor can handle relays with dynamic IP addresses just fine. Just leave the "Address" line in your torrc blank, and Tor will guess. Note: As of Tor 0. Eventually they will replace the old RSA identities, but that will happen in time, to ensure compatibility with older versions. All of this said, fast Tor relays do use a lot of ram. It is not unusual for a fast exit relay to use MB of memory. See our obfs4 setup guide to learn how to set up an obfs4 bridge. The default open ports are listed below but keep in mind that, any port or ports can be opened by the relay operator by configuring it in torrc or modifying the source code.
But there are a few exceptions:. If you open your DirPort, then Tor clients will ask you for a copy of the directory. This probably accounts for most of the difference between your "write" byte count and your "read" byte count. Another minor exception shows up when you operate as an exit node, and you read a few bytes from an exit connection for example, an instant messaging or ssh connection and wrap it up into an entire byte cell for transport through the Tor network.
Tor manages bandwidth across the entire network. It does a reasonable job for most relays. Tor wants low-latency web pages, which requires fast connections with headroom. BitTorrent wants bulk downloads, which requires using all the bandwidth. Most providers tell you the maximum speed of your local connection.
But Tor has users all over the world, and our users connect to one or two Guard relays at random. So we need to know how well each relay can connect to the entire world. So even if all relay operators set their advertised bandwidth to their local connection speed, we would still need bandwidth authorities to balance the load between different parts of the Internet.
This is good for clients: an overloaded relay has high latency. Then Tor would be almost as fast as the wider Internet. Sometimes, a relay is slow because its processor is slow or its connections are limited. Other times, it is the network that is slow: the relay has bad peering to most other tor relays, or is a long distance away.
Look up your relay on Metrics. Then mouse over the bandwidth heading to see the observed bandwidth and relay bandwidth rate. Here is some more detail and some examples: Drop in consensus weight and Rampup speed of Exit relay. If your relay thinks it is slow, or the bandwidth authorities think it is slow, you can test the bandwidth yourself:. Tor guesses its IP address by asking the computer for its hostname, and then resolving that hostname. Also, if you have many addresses, you might also want to set "OutboundBindAddress" so external connections come from the IP you intend to present to the world.
If your relay is relatively new then give it time. Tor decides which relays it uses heuristically based on reports from Bandwidth Authorities. The lifecycle of a new relay is explained in more depth in this blog post. If you want to use this feature, you can consult our more detailed guide on the topic.
Tor has partial support for IPv6 and we encourage every relay operator to enable IPv6 functionality in their torrc configuration files when IPv6 connectivity is available. For the time being Tor will require IPv4 addresses on relays, you can not run a Tor relay on a host with IPv6 addresses only.
Exonerator is a web service that can check if an IP address was a relay at a given time. We can also provide a signed letter if needed. When you click on ". A list of our Onion Services is available at onion. You can identify v3 onion addresses by their 56 character length, e. In September , Tor started warning onion service operators and clients that v2 will be deprecated and obsolete in version 0. Tor Browser started warning users in June, In July , 0. In October , we will release new Tor client stable versions for all supported series that will disable v2.
V2 onion addresses are fundamentally insecure. If you have a v2 onion, we recommend you migrate now. This is a backward incompatible change: v2 onion services will not be reachable after September In torrc, to create a version 3 address, you simply need to create a new service just as you did your v2 service, with these two lines:.
Restart tor, and look on your directory for the new address. If you wish to keep running your version 2 service until it is deprecated to provide a transition path to your users, add this line to the configuration block of your version 2 service:.
If you have Onion-Location configured on your website, you need to set the header with your new v3 address. For technical documentation about running onion services, please read the Onion Services page in our Community portal. No, v2 onion connections will start failing nowish, first slowly, then suddenly. Already, introduction points are not in Tor 0.
Yes, it will work until the v2 onion address is unreachable. You may want to encourage users to update their bookmarks. Yes, we are continuously working on improving onion services security. For an overview about these proposals, read the detailed blog post How to stop the onion denial of service. When browsing an Onion Service, Tor Browser displays different onion icons in the address bar indicating the security of the current webpage.
An onion with a red slash means:. An onion with caution sign means:. Onion services allow people to browse but also to publish anonymously, including publishing anonymous websites. Onion services are also relied on for metadata-free chat and file sharing, safer interaction between journalists and their sources like with SecureDrop or OnionShare , safer software updates, and more secure ways to reach popular websites like Facebook.
These services use the special-use top level domain TLD. When accessing a website that uses an onion service, Tor Browser will show at the URL bar an icon of an onion displaying the state of your connection: secure and using an onion service. To learn more about onion services, read How do Onion Services work? An authenticated onion service is an onion service that requires you to provide an authentication token in this case, a private key before accessing the service.
You can get the access credentials from the onion service operator. Reach out to the operator and request access. Learn more about how to use onion authentication in Tor Browser. If you want to create an onion service with client authentication, please see the Client Authorization in the Community portal.
Websites that are only accessible over Tor are called "onions" and end in the TLD. You can access these websites by using Tor Browser. The addresses must be shared with you by the website host, as onions are not indexed in search engines in the typical way that vanilla websites are. If you suspect your application might behave like this, follow the instructions below to check. If you want to automatically disable all connections leaking DNS requests, set SafeSocks 1 in your torrc file.
There is nothing the Tor developers can do to trace Tor users. Vidalia is no longer maintained or supported. A large portion of the features Vidalia offered have now been integrated into Tor Browser itself. We are so sorry, but you have been infected with malware. The Tor Project did not create this malware. But please consider that our software is used every day for a wide variety of purposes by human rights activists, journalists, domestic violence survivors, whistleblowers, law enforcement officers, and many others.
Unfortunately, the protection that our software can provide to these groups of people can also be abused by criminals and malware authors. The Tor Project does not support or condone the use of our software for malicious purposes. Please see our community page for how to get involved! You can read all about that on our Trademark faq page. Tor is designed to defend human rights and privacy by preventing anyone from censoring things, even us. Tor relies on the support of users and volunteers around the world to help us improve our software and resources, so your feedback is extremely valuable to us and to all Tor users.
We recommend asking for help on the Tor Forum. You will need to create an account to submit a new topic. Before you ask, please review our discussion guidelines. At the moment, for the fastest response, please write in English. If you found a bug, please use GitLab. First, check if the bug is already known. We track all Tor Browser related issues at Tor Browser issue tracker.
Issues related to our websites should be filed under the Web issue tracker. The more specific your subject line is e. If none of these languages works for you, please write in any language you feel comfortable with, but keep in mind it will take us a bit longer to answer as we will need help with translation to understand it. You can always leave comments on the blog post related to the issue or feedback you want to report.
If there is not a blog post related to your issue, please contact us another way. We may not respond right away, but we do check the backlog and will get back to you when we can. For reporting issues or feedback using email lists, we recommend that you do so on the one that is related to what you would like to report.
A complete directory of our mailing lists can be found here. For feedback or issues related to Tor Browser, Tor network or other projects developed by Tor: tor-talk. For feedback or issues related to our websites: ux. For feedback or issues related to running a Tor relay: tor-relays. For feedback on content related to Tor Browser Manual or Support website: tor-community-team. If you want to encrypt your mail, you can get the GPG public key for the list by contacting tor-security-sendkey lists.
Here is the fingerprint:. We do take some safe measurements of how the network functions, which you can check out at Tor Metrics. After eleven beta releases, we discontinued support of Tor Messenger. Do you?
Contact us. A list of all of our software projects can be found on our projects page. For sharing files over Tor, OnionShare is a good option. OnionShare is an open source tool for securely and anonymously sending and receiving files using Tor onion services. It works by starting a web server directly on your computer and making it accessible as an unguessable Tor web address that others can load in Tor Browser to download files from you, or upload files to you.
Many exit nodes are configured to block certain types of file sharing traffic, such as BitTorrent. BitTorrent in particular is not anonymous over Tor. We do not recommend using Tor with BitTorrent. For further details, please see our blog post on the subject. Tor is funded by a number of different sponsors including US federal agencies, private foundations, and individual donors. Check out a list of all our sponsors and a series of blog posts on our financial reports. We feel that talking openly about our sponsors and funding model is the best way to maintain trust with our community.
We are always seeking more diversity in our funding sources, especially from foundations and individuals. Right now the path length is hard-coded at 3 plus the number of nodes in your path that are sensitive. Also, using paths longer than 3 could harm anonymity, first because it makes denial of security attacks easier, and second because it could act as an identifier if only a small number of users have the same path length as you.
Thank you for your support! You can find more information about donating on our donor FAQ. The tor-project channel is where Tor people discuss and coordinate daily Tor work. It has fewer members than tor and is more focused on the work at hand. You are also welcome to join this channel. To access tor-project, your nickname nick must be registered and verified. After registering your nickname, to gain access to the tor-project and other protected channels, your nickname must be verified.
You can toggle back and forth between channels by clicking on the different channel names at the top left of the IRC window. IRC has worked out well for us, and our community on IRC has been evolving over the years with new people joining in and new channels appearing for specific needs in the organization. The Tor community is opening up its day-to-day conversations by bridging our IRC community the Matrix network. For regular Tor users, it means that you can chat with us using a friendly App like Element.
The tor:matrix. To join the conversation with Tor contributors on Matrix, you need a Matrix account. Several providers can get you one. One of these is the Matrix. You can register an account on app. Once you have a Matrix account, you can either join the Tor Matrix Space to browse the Tor rooms, or directly join the tor:matrix. If your nick is already being used, you will get a message from the system and you should choose another nick. After a few seconds, you will automatically enter tor, which is a chatroom with Tor developers, relay operators and other community members.
There are some random people in tor as well. You can ask questions in the empty bar at the bottom of the screen. People may be able to answer right away, or there may be a bit of a delay some people are listed on the channel but are away from their keyboards and record channel activities to read later.
If you want to chat with someone specific, start your comment with their nick and they will typically receive a notification that someone is trying to contact them. For this reason, and because many people end up preferring it anyway, you should also consider using an IRC client. Yes, deb. Note: The symbol refers to running the code as root. This means you should have access to a user account with system administration privileges, e.
In the past they have not been reliably updated. That means you could be missing stability and security fixes. Instead, please use Tor Debian repository. The Tor Project maintains its own Debian package repository. The package repository offers amd64 , arm64 , and i binaries. Verify your operating system is capable of running the binary by inspecting the output of the following commend:. It should output either amd64 , arm64 , or i The repository does not support other CPU architectures.
You should either install the version Debian offers make sure to check out Debian backports, too, as that one has often a more up-to-date Tor package , or build Tor from source. To enable all package managers using the libapt-pkg library to access metadata and packages available in sources accessible over https Hypertext Transfer Protocol Secure.
If you want to try experimental packages, add these in addition to the lines from above Note, use whatever is the current experimental version instead of 0. We provide a Debian package to help you keep our signing key current. It is recommended you use it. Install it with the following commands:. Note: The symbol refers to be running the code as root. That means you should have access to a user account with system administration privileges, e.
Criminals can already do bad things. They can steal cell phones, use them, and throw them in a ditch; they can crack into computers in Korea or Brazil and use them to launch abusive activities; they can use spyware, viruses, and other techniques to take control of literally millions of Windows machines around the world. Tor aims to provide protection for ordinary people who want to follow the law.
Only criminals have privacy right now, and we need to fix that. Criminals and other bad people have the motivation to learn how to get good anonymity, and many have the motivation to pay well to achieve it. Being able to steal and reuse the identities of innocent victims identity theft makes it even easier. This is the worst of all possible worlds.
So yes, criminals can use Tor, but they already have better options, and it seems unlikely that taking Tor away from the world will stop them from doing their bad things. At the same time, Tor and other privacy measures can fight identity theft, physical crimes like stalking, and so on.
Distributed denial of service DDoS attacks typically rely on having a group of thousands of computers all sending floods of traffic to a victim. So ordinary DDoS attacks are not possible over Tor. So in general, attackers who control enough bandwidth to launch an effective DDoS attack can do it just fine without Tor. Spammers can use Tor to connect to open HTTP proxies and from there to SMTP servers ; to connect to badly written mail-sending CGI scripts; and to control their botnets — that is, to covertly communicate with armies of compromised computers that deliver the spam.
This is a shame, but notice that spammers are already doing great without Tor. Not much, in the grand scheme of things. Of course, like all privacy-oriented networks on the net, it attracts its share of jerks. Abuse complaints may come in a variety of forms. For example:. Some hosting providers are friendlier than others when it comes to Tor exits. For a listing see the good and bad ISPs wiki. For a complete set of template responses to different abuse complaint types, see the collection of templates.
You can also proactively reduce the amount of abuse you get by following these tips for running an exit node with minimal harassment and running a reduced exit policy. If you have a spare IP not used for other activities, you might consider running your Tor relay on it. A collection of templates for successfully responding to ISPs is collected here. Sometimes jerks make use of Tor to troll IRC channels.
This abuse results in IP-specific temporary bans "klines" in IRC lingo , as the network operators try to keep the troll off of their network. In reality, this is not the case — many such trolls routinely make use of the literally millions of open proxies and compromised computers around the Internet.
The IRC networks are fighting a losing battle of trying to block all these nodes, and an entire cottage industry of blocklists and counter-trolls has sprung up based on this flawed security model not unlike the antivirus industry. The Tor network is just a drop in the bucket here.
On the other hand, from the viewpoint of IRC server operators, security is not an all-or-nothing thing. By responding quickly to trolls or any other social attack, it may be possible to make the attack scenario less attractive to the attacker. And most individual IP addresses do equate to individual humans, on any given IRC network at any given time. The exceptions include NAT gateways which may be allocated access as special cases.
But the real answer is to implement application-level auth systems, to let in well-behaving users and keep out badly-behaving users. This needs to be based on some property of the human such as a password they know , not some property of the way their packets are transported.
Of course, not all IRC networks are trying to ban Tor nodes. After all, quite a few people use Tor to IRC in privacy in order to carry on legitimate communications without tying them to their real-world identity. Each IRC network needs to decide for itself if blocking a few more of the millions of IPs that bad people can use is worth losing the contributions from the well-behaved Tor users. If you explain the problem, and they conclude that Tor ought to be blocked, you may want to consider moving to a network that is more open to free speech.
Maybe inviting them to tor on irc. Finally, if you become aware of an IRC network that seems to be blocking Tor, or a single Tor exit node, please put that information on The Tor IRC block tracker so that others can share. At least one IRC network consults that page to unblock exit nodes that have been blocked inadvertently. There are some situations where it makes sense to block anonymous users for an Internet service.
But in many cases, there are easier solutions that can solve your problem while still allowing users to access your website securely. For example, you might have certain areas of the site, or certain privileges like posting, available only to people who are registered. This way you can have multi-tiered access and not have to ban every aspect of your service. For example, the Freenode IRC network had a problem with a coordinated group of abusers joining channels and subtly taking over the conversation; but when they labeled all users coming from Tor nodes as "anonymous users", removing the ability of the abusers to blend in, the abusers moved back to using their open proxies and bot networks.
Second, consider that hundreds of thousands of people use Tor every day simply for good data hygiene — for example, to protect against data-gathering advertising companies while going about their normal activities. Some Tor users may be legitimately connecting to your service right now to carry on normal activities.
You need to decide whether banning the Tor network is worth losing the contributions of these users, as well as potential future legitimate users. At this point, you should also ask yourself what you do about other services that aggregate many users behind a few IP addresses. Tor is not so different from AOL in this respect. Lastly, please remember that Tor relays have individual exit policies.
Many Tor relays do not allow exiting connections at all. Many of those that do allow some exit connections might already disallow connections to your service. When you go about banning nodes, you should parse the exit policies and only block the ones that allow these connections; and you should keep in mind that exit policies can change as well as the overall list of nodes in the network.
If you really want to do this, we provide a Tor exit relay list or a DNS-based list you can query. Some system administrators block ranges of IP addresses because of official policy or some abuse pattern, but some have also asked about allowing Tor exit relays because they want to permit access to their systems only using Tor. These scripts are usable for allowlisting as well. Some fans have suggested that we redesign Tor to include a backdoor.
There are two problems with this idea. First, it technically weakens the system too far. Having a central way to link users to their activities is a gaping hole for all sorts of attackers; and the policy mechanisms needed to ensure correct handling of this responsibility are enormous and unsolved. This ultimately means that it is the responsibility of site owners to protect themselves against compromise and security issues that can come from anywhere. This is just part of signing up for the benefits of the Internet.
You must be prepared to secure yourself against the bad elements, wherever they may come from. Tracking and increased surveillance are not the answer to preventing abuse. Traditional police techniques can still be very effective against Tor, such as investigating means, motive, and opportunity, interviewing suspects, writing style analysis, technical analysis of the content itself, sting operations, keyboard taps, and other physical investigations.
The Tor Project is also happy to work with everyone including law enforcement groups to train them how to use the Tor software to safely conduct investigations or anonymized activities online. The Tor Project does not host, control, nor have the ability to discover the owner or location of a. The name you see ending in. Onion services are designed to protect both the user and service provider from discovering who they are and where they are from.
The design of onion services means the owner and location of the. Traditional police techniques can still be very effective against them, such as interviewing suspects, writing style analysis, technical analysis of the content itself, sting operations, keyboard taps, and other physical investigations. We do not view links you report. We take abuse seriously. Activists and law enforcement use Tor to investigate abuse and help support survivors.
We work with them to help them understand how Tor can help their work. In some cases, technological mistakes are being made and we help to correct them. Our refusal to build backdoors and censorship into Tor is not because of a lack of concern. We refuse to weaken Tor because it would harm efforts to combat child abuse and human trafficking in the physical world, while removing safe spaces for victims online.
Meanwhile, criminals would still have access to botnets, stolen phones, hacked hosting accounts, the postal system, couriers, corrupt officials, and whatever technology emerges to trade content. They are early adopters of technology. In the face of this, it is dangerous for policymakers to assume that blocking and filtering is sufficient.
We are more interested in helping efforts to halt and prevent child abuse than helping politicians score points with constituents by hiding it. Finally, it is important to consider the world that children will encounter as adults when enacting policy in their name. Will they thank us if they are unable to voice their opinions safely as adults? What if they are trying to expose a failure of the state to protect other children?
If you need to check if a certain IP address was acting as a Tor exit node at a certain date and time, you can use the ExoneraTor tool to query the historic Tor relay lists and get an answer. No, but we can see what fraction of directories reported them, and then we can extrapolate the total number in the network. We put in the assumption that the average client makes 10 such requests per day.
We simply divide directory requests by 10 and consider the result as the number of users. Another way of looking at it, is that we assume that each request represents a client that stays online for one tenth of a day, so 2 hours and 24 minutes. Average number of concurrent users, estimated from data collected over a day. No, the relays that report these statistics aggregate requests by country of origin and over a period of 24 hours.
The statistics we would need to gather for the number of users per hour would be too detailed and might put users at risk. Then we count those users as one. The directories resolve IP addresses to country codes and report these numbers in aggregate form.
This is one of the reasons why tor ships with a GeoIP database. Very few bridges report data on transports or IP versions yet, and by default we consider requests to use the default OR protocol and IPv4. Once more bridges report these data, the numbers will become more accurate. Relays and bridges report some of the data in hour intervals which may end at any time of the day.
And after such an interval is over relays and bridges might take another 18 hours to report the data. We cut off the last two days from the graphs, because we want to avoid that the last data point in a graph indicates a recent trend change which is in fact just an artifact of the algorithm.
Please find the following tarball for more details:. We also use histories that only contain bytes written to answer directory requests, which is more precise than using general byte histories. We wrote a 13 page long technical report explaining the reasons for retiring the old approach.
We run an anomaly-based censorship-detection system that looks at estimated user numbers over a series of days and predicts the user number in the next days. If the actual number is higher or lower, this might indicate a possible censorship event or release of censorship. For more details, see our technical report. Attention: These instructions are to verify the tor source code.
Below we explain why it is important and how to verify that the tor source code you download is the one we have created and has not been modified by some attacker. Each file on our download page is accompanied by two files which are labelled "checksum" and "sig" with the same name as the package and the extension ". Once the signature has been validated see below on how to do it , the package integrity can be validated with:.
This will vary by web browser, but generally you can download this file by right-clicking the "sig" and "checksum" link and selecting the "save file as" option. For example, tor The following keys can sign the tarball. To verify the signature of the package you downloaded, you will need to download the corresponding. Now that we validated the signatures of the checksum, we need to verify the integrity of the package.
No, you cannot trust the network to pick the path. Malicious relays could route you through their colluding friends. This would give an adversary the ability to watch all of your traffic end to end. It would be nice to let relay operators say things like reject www. There are two problems, though. First, users could still get around these blocks. For example, they could request the IP address rather than the hostname when they exit from the Tor network.
This means operators would still need to learn all the IP addresses for the destinations in question. The second problem is that it would allow remote attackers to censor arbitrary sites. For example, if a Tor operator blocks www1.
This would be handy for a number of reasons: It would make Tor better able to handle new protocols like VoIP. It could solve the whole need to socksify applications. Exit relays would also not need to allocate a lot of file descriptors for all the exit connections. IP packets reveal OS characteristics. We would still need to do IP-level packet normalization, to stop things like TCP fingerprinting attacks. Given the diversity and complexity of TCP stacks, along with device fingerprinting attacks, it looks like our best bet is shipping our own user-space TCP stack.
Application-level streams still need scrubbing. We will still need user-side applications like Torbutton. Certain protocols will still leak information. Many potential abuse issues are resolved by the fact that Tor only transports valid TCP streams as opposed to arbitrary IP including malformed packets and IP floods. Exit policies become even more important as we become able to transport IP packets.
We also need to compactly describe exit policies in the Tor directory, so clients can predict which nodes will allow their packets to exit. Clients also need to predict all the packets they will want to send in a session before picking their exit node! The Tor-internal name spaces would need to be redesigned. We support onion service ". Requiring every Tor user to be a relay would help with scaling the network to handle all our users, and running a Tor relay may help your anonymity.
Providing service to these clients is a critical part of providing effective anonymity for everyone, since many Tor users are subject to these or similar constraints and including these clients increases the size of the anonymity set.
That said, we do want to encourage Tor users to run relays, so what we really want to do is simplify the process of setting up and maintaining a relay. First, we still need to get better at automatically estimating the right amount of bandwidth to allow. It might be that switching to UDP transport is the simplest answer here — which alas is not a very simple answer at all. Second, we need to work on scalability, both of the network how to stop requiring that all Tor relays be able to connect to all Tor relays and of the directory how to stop requiring that all Tor users know about all Tor relays.
Changes like this can have large impact on potential and actual anonymity. See Section 5 of the Challenges paper for details. Again, UDP transport would help here. Three different research papers describe ways to identify the relays in a circuit by running traffic through candidate relays and looking for dips in the traffic while the circuit is active.
These clogging attacks are not that scary in the Tor context so long as relays are never clients too. Here are our current thoughts on Tor incentives. Download Tor Browser to experience real private browsing without tracking, surveillance, or censorship.
To advance human rights and freedoms by creating and deploying free and open source anonymity and privacy technologies, supporting their unrestricted availability and use, and furthering their scientific and popular understanding. Sign up. Trademark, copyright notices, and rules for use by third parties can be found in our FAQ.
How can we help? Get in Touch Chat with us live! Join us on IRC. Edit this page - Suggest Feedback - Permalink. Can I donate for a relay rather than run my own? Am I totally anonymous if I use Tor? Use HTTPS versions of websites Tor will encrypt your traffic to and within the Tor network, but the encryption of your traffic to the final destination website depends on that website. When I use Tor Browser, will anyone be able to tell which websites I visit?
Which platforms is Tor Browser available for? Our website is blocked by a censor. Can Tor Browser help users access our website? About Tor What attacks remain against onion routing? What protections does Tor provide? Generally speaking, Tor aims to solve three privacy problems: First, Tor prevents websites and other services from learning your location, which they can use to build databases about your habits and interests. What is Tor? The name "Tor" can refer to several different components.
Why is it called Tor? Does Tor remove personal information from the data my application sends? How is Tor different from other proxies? Can I distribute Tor? What programs can I use with Tor? Is there a backdoor in Tor? There is absolutely no backdoor in Tor. What are Entry Guards? How do clients know what the directory authorities are?
How often does Tor change its paths? For Windows users: If you run Windows, download Gpg4win and run its installer. After importing the key, you can save it to a file identifying it by its fingerprint here : gpg --output. Verifying the signature To verify the signature of the package you downloaded, you will need to download the corresponding ".
For Windows users: gpgv --keyring. Workaround using a public key If you encounter errors you cannot fix, feel free to download and use this public key instead. How do I install Tor Browser? How do I uninstall Tor Browser? How do I update Tor Browser? What are the most common issues with the latest stable version of Tor Browser? Are there any paid versions of Tor Browser? You can report fake Tor Browsers on frontdesk torproject.
How can I make Tor run faster? Is Tor Browser slower than other browsers? Can I set Tor Browser as my default browser? Can I use Tor with a browser besides Tor Browser? Is it safe to run Tor Browser and another browser at the same time? Does using Tor Browser protect other applications on my computer?
Can I run multiple instances of Tor Browser? Why does my Tor Browser say something about Firefox not working? Why is Tor Browser built from Firefox and not some other browser? How can I export and import bookmarks in Tor Browser? The desktop is usually a good spot, but any place that is easy to remember will work. Click the Save button. The Export Bookmarks File window will close. Close the Library window. Click the Open button. The Import Bookmarks File window will close.
If you wish to backup Choose Backup A new window opens and you have to choose the location to save the file. The file has a. If you wish to restore Choose Restore and then select the bookmark file you wish to restore. Click okay to the pop up box that appears and hurray, you just restored your backup bookmark.
Import data from another browser Bookmarks can be transferred from Firefox to Tor Browser. Bug Edit this page - Suggest Feedback - Permalink. How do I view Tor Browser message log? What are grey bars on resized Tor Browser window? A website I am trying to reach is blocking access over Tor. Something like this might do the trick: "Hi!
Once completed, Tor Browser relaunches. You may also check for Tor Browser updates at any time. The About Tor Browser window launches separately and begins checking for updates. If there is an available update, it starts downloading immediately. Once completed, Tor Browser is up to date displays along with the version number. Watch the companion video to see how to update Tor Browser on a step by step basis.
To download the latest version of Tor Browser at any time, visit the Tor Project website. Henry Irvine, Contributing Technology Writer, translates more than a decade of internet technology experience in product and customer relationship management into practical help and how-to content. Hank on Twitter. Sign in. Login Username Password Lost your password?
Forgot Password Username or E-mail. How to update Tor Browser. Henry Irvine May 7, Tor. Henry Irvine. Tags Tor Browser How can I verify Tor Browser signature? To advance human rights and freedoms by creating and deploying free and open source anonymity and privacy technologies, supporting their unrestricted availability and use, and furthering their scientific and popular understanding.
Sign up. Trademark, copyright notices, and rules for use by third parties can be found in our FAQ. Download Tor Browser. Protect yourself against tracking, surveillance, and censorship. Download for Windows Signature. Download for macOS Signature. Download for Linux Signature. Download for Android. Read the latest release announcements. Select "Tor Network Settings" and "Use a bridge".
Продолжительность. hi roybl, tor browser is a modified firefox build. as far as i know for security reasons it will run in permanent private browsing mode so no history is. Информация об этой странице недоступна.