GFW upgrade fail - visitors to blocked sites redirected to porn

In the past, the Chinese authorities’ DNS poisoning system would direct Chinese internet users who were trying to access Facebook, Twitter and other blocked websites (without the use of a circumvention tool) to a set of fake IP addresses that are blocked in China or are non-existent. After waiting for some time, Chinese internet users would receive a timeout message if they were trying to access a blocked site.

However, with the new DNS poisoning system, in addition to those IP addresses used before, the Chinese authorities are using real IP addresses that actually host websites and are accessible in China. For example, https://support.dnspod.cn/Tools/tools/ shows that if a user tries to access Facebook from China, they might instead land on a random web page, e.g. http://178.62.75.99

Below is a screenshot by a Chinese user when he was trying to access our GreatFire.org website which was blocked in China. He was redirected to a goverment site in Korea. In essense, GFW is sending Chinese users to DDOS the Korea government's website.

One Chinese Internet user reported to us that when he tried to access Facebook in China, he was sent to a Russian website, unrelated to Facebook. Another user tweeted that he was redirected to an German adult site when he tried to access a website for a VPN.

某墙你这什么意思,DNS 污染返回给我一个德国工口站的 IP,满屏很黄很暴力弹弹弹(

— nil (@xierch) January 4, 2015

The redirection to adult content is especially ironic. The authorities often cite the “protection of minors” as one reason to justify internet censorship. But in this example, users who are trying to access perfectly legal but blocked content instead are sent to illegal (in China) adult content websites. Perhaps this is a mistake but it may not be. Does this signal that the censorship authorities are beyond the rule of law in China?

This upgrade of the GFW effectively disabled many anti-DNS-poisoning tools. Because GFW used only a small set of fake IP addresses, these tools could discard the fake IP addresses easily and access the correct IP addresses to bypass any block. Now this is no longer possible as legitimate IP address are used to poison other domains. In addition, the authorities may be experimenting with a new way of hiding censorship from the people by redirecting them to random sites that are accessible - making it seem that the problem rests with the host website.

Chinese internet users have grown accustomed to websites timing out - and many make the connection with censorship. Maybe the authorities think that, after a transition period, internet users will become accustomed to the new model of DNS poisoning as they have with websites timing out. We do not anticipate that Chinese netizens will react negatively to this change as many are already familiar with such tactics. The redirection strategy was already being used by some local ISPs in China to deliver advertising.

It is clear that the authorities treat the great firewall as a work-in-progress and are constantly tweaking and making changes to the censorship apparatus. We expect to see more changes in the coming months.

Comments

More Blog Posts

Subscribe to our mailing list
Show content from Blog | Google+ | Twitter | All. Subscribe to our blog using RSS.

Thu, Aug 10, 2023

1.4 million people used FreeBrowser to circumvent the Great Firewall of Turkmenistan

Since 2021, the authorities in Turkmenistan have taken exceptional measures to crack down on the use of circumvention tools. Citizens have been forced to swear on the Koran that they will not use a VPN. Circumvention tool websites have been systematically blocked. Arbitrary searches of mobile devices have also taken place and have even targeted school children and teachers.

The government has also blocked servers hosting VPNs which led to “near complete” internet shutdowns on several occasions in 2022. Current reports indicate that 66 hosting providers, 19 social networks and messaging platforms, and 10 leading content delivery networks (CDNs), are blocked in the country. The government presumably is unconcerned about the negative economic impact that such shutdowns can cause.

Fri, Mar 18, 2022

Well-intentioned decisions have just made it easier for Putin to control the Russian Internet

This article is in large part inspired by a recent article from Meduza (in Russian).

Since the beginning of the war in Ukraine, Russian users have had problems accessing government websites and online banking clients. Browsers began to mark these sites as unsafe and drop the connection. The reason is the revocation of digital security certificates by foreign certificate authorities (either as a direct consequence of sanctions or as an independent, good will move); without them, browsers do not trust sites and “protect” their users from them.

However, these actions, caused - or at least triggered by - a desire to punish Russia for their gruesome actions in Ukraine, will have long-lasting consequences for Russian netizens.

Digital certificates are needed to confirm that the site the user wants to visit is not fraudulent. The certificates contain encryption keys to establish a secure connection between the site and the user. It is very easy to understand whether a page on the Internet is protected by a certificate. One need just look at the address bar of the browser. If the address begins with the https:// prefix, and there is a lock symbol next to the address, the page is protected. By clicking on this lock, you can see the status of the connection, the name of the Certification Authority (CA) that issued the certificate, and its validity period.

There are several dozen commercial and non-commercial organizations in the world that have digital root certificates, but 3/4 of all certificates are issued by only five of the largest companies. Four of them are registered in the USA and one is registered in Belgium.

Mon, Aug 03, 2020

Announcing the Release of GreatFire AppMaker

GreatFire (https://en.greatfire.org/), a China-focused censorship monitoring organization, is proud to announce that we have developed and released a new anti-censorship tool that will enable any blocked media outlet, blogger, human rights group, or civil society organization to evade censors and get their content onto the phones of millions of readers and supporters in China and other countries that censor the Internet.

GreatFire has built an Android mobile app creator, called “GreatFire AppMaker”, that can be used by organizations to unblock their content for users in China and other countries. Organizations can visit a website (https://appmaker.greatfire.org/) which will compile an app that is branded with the organization’s own logo and will feature their own, formerly blocked content. The app will also contain a special, censorship-circumventing web browser so that users can access the uncensored World Wide Web. The apps will use multiple strategies, including machine learning, to evade advanced censorship tactics employed by the Chinese authorities.  This project will work equally well in other countries that have China-like censorship restrictions. For both organizations and end users, the apps will be free, fast, and extremely easy to use.

This project was inspired by China-based GreatFire’s first-hand experience with our own FreeBrowser app (https://freebrowser.org/en) and desire to help small NGOs who may not have the in-house expertise to circumvent Chinese censorship. GreatFire’s anti-censorship tools have worked in China when others do not. FreeBrowser directs Chinese internet users to normally censored stories from the app’s start page (http://manyvoices.news/).

Fri, Jul 24, 2020

Apple, anticompetition, and censorship

On July 20, 2020, GreatFire wrote to all 13 members of the Subcommittee on Antitrust, Commercial and Administrative Law of the U.S. House Committee on the Judiciary, requesting a thorough examination into Apple’s practice of censorship of its App Store, and an investigation into how the company collaborates with the Chinese authorities to maintain its unique position as one of the few foreign tech companies operating profitably in the Chinese digital market.  

This letter was sent a week before Apple CEO TIm Cook will be called for questioning in front of the Subcommittee on Antitrust, Commercial and Administrative Law. The CEOs of Amazon, Google and Facebook will also be questioned on July 27, as part of the Committee’s ongoing investigation into competition in the digital marketplace.

This hearing offers an opportunity to detail to the Subcommittee how Apple uses its closed operating ecosystem to not only abuse its market position but also to deprive certain users, most notably those in China, of their right to download and use apps related to privacy, secure communication, and censorship circumvention.

We hope that U.S. House representatives agree with our view that Apple should not be allowed to do elsewhere what would be considered as unacceptable in the U.S. Chinese citizens are not second class citizens. Private companies such as Apple compromise themselves and their self-proclaimed values of freedom and privacy when they collaborate with the Chinese government and its censors.

Mon, Jun 10, 2019

Apple Censoring Tibetan Information in China

Apple has a long history of censorship when it comes to information about Tibet. In 2009, it was revealed that several apps related to the Dalai Lama were not available in the China App Store. The developers of these apps were not notified that their apps were removed. When confronted with these instances of censorship, an Apple spokesperson simply said that the company “continues to comply with local laws”.

In December, 2017, at a conference in China, when asked about working with the Chinese authorities to censor the Apple App Store, Tim Cook proclaimed:

"Your choice is: do you participate, or do you stand on the sideline and yell at how things should be. And my own view very strongly is you show up and you participate, you get in the arena because nothing ever changes from the sideline."

In the ten years since Apple was first criticized for working with the Chinese authorities to silence already marginalized voices, what has changed? Apple continues to strictly follow the censorship orders of the Chinese authorities. When does Tim Cook expect that his company will help to bring about positive change in China?

Based on data generated from https://applecensorship.com, Apple has now censored 29 popular Tibetan mobile applications in the China App Store. Tibetan-themed apps dealing with news, religious study, tourism, and even games are being censored by Apple. A full list of the censored apps appear below.

Subscribe to our blog using RSS.

Comments

今天我访问http://encrypted.google.com 打开的是一个黄色网站.DNS设置的是comodo DNS

It’s certainly fresh to writing and seeing concepts which are truly helpful to get the direction.Excellent writing style
Have A Look Dean Winchester Jacket

中国遍地黄网,百度上到处都是儿童色情 天朝根本就不管黄色内容 而是打着扫黄的旗号封禁政治内容

It’s certainly fresh to writing and seeing concepts which are truly helpful to get the direction.Excellent writing style
happy holi images

this post is awesome, great msg for us, plz update ur blog for daily basis, i am regular visitor of this site, so keep posting for us,

click the below links to create backlink
best free backlink website
click here for msg movie

thanks for this post, keep it up for updating us, i am waiting for ur new article.

thanks again
IPL8 live stream 2015

Proxy server list Dreamy TRicks Proxy server list 2015

We hope youre used to this associated with vehicular mayhem to be cranked up that couple of notches, because In seconds and also fast and Furious 7 Torrent HD is at this moment under both weeks out roaring through cinemas. This can appearance nuts, along with cars parachuting above some sort of airplane and even leaping on home for you to building at the Etihad Podiums in Abu Dhabi, but it will be also confidence for you to make a funny amount of money at the bag company right after this debuts with Successful Friday.

It’s certainly fresh to writing and seeing concepts which are truly helpful to get the direction

mothers day sms in hindi
happy mothers day sms in hindi
happy mothers day in hindi

Proxy server list AllTechBaba Proxy server list 2015

Happy Holi to all of you guys.

http://www.teamunite.org/

Download and wish to your friends. Wish Facebook

Check out daily tech updates here!
Visit Techonloop.com

You should know why not use facebook auto liker, Lets check here...

There is a commonly held belief in China that if you have a VPN that works then you should keep quiet about it http://www.vakumpembesar.com/

Thanks For Share This Info
https://tricksbugs.com/

Nice Website. So Much Information available here. https://www.newadsense.com

Thanks for adding such an amazing information on your blog and have a look https://itechhacks.com/ and http://itubeapkpro.com/ Thanks

Your article is too good, appreciate your work, please update your site regularly read this also https://www.theexplode.com/free-proxy-sites/ (link is external)

Awesome Information Provided https://www.healthcareinsides.com

Appétit and also grilling enthusiast, likes smoker smokerify.com two digital air probes, which function as oven.

Thanks for this valuable information...

Please have a look at this...
https://www.techykeeday.com

Thanks

tap web link on it which is already offered down of post. leoplaycard You might have some applications on your smartphones

Thanks for the helpful information. I always visit here for news and some other intersesting facts. Keep up the work and keep posting great contents. https://www.ytechb.com/

Thank you for sharing the post! I thought those websites were hacked at that time. instagram viewer Thank you for clarify.

This spot have very nice article, keep working like that, Thank you for the same! - https://imobilebazaar.com/

There are so many matter with the censorship in China. I wonder where in the world has a strict censorship like this, not count South Korea :)
https://www.pictadesk.com/technology

Add new comment

Filtered HTML

  • Web page addresses and e-mail addresses turn into links automatically.
  • Allowed HTML tags: <a> <em> <strong> <cite> <blockquote> <code> <ul> <ol> <li> <dl> <dt> <dd>
  • Lines and paragraphs break automatically.

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
By submitting this form, you accept the Mollom privacy policy.