常见问题
Analyzer是GreatFire的第一个项目，在2011年上线后，它一如以往的为大家提供测试服务直至今日。现在，我们做了一个新的项目叫做"Blocky"，欢迎大家试用这个全新的版本！如果您对此有任何意见和建议，请发送邮件到support@greatfire.org。
Our test system might store incorrect HTML title for some test results. One example is this URL(https://zh.greatfire.org/cn.nytimes.com/article/china/2012/07/31/c31qidong) on Aug 2nd. We have fully solved this problem by mm,dd,2012 Any URL in China was inaccessible in U.S testing node because server's IP was blocked by the GFW and the block works both ways. One example is this URL(https://en.greatfire.org/cn.yahoo.com) from April 5 to Aug 20. We... 更多
我们是非盈利性组织。我们也在探索各种能使本项目自给自足的方法。
是的！请关注我们的微博屏蔽关键字列表，你也可以在这里测试任意关键字。
再次声明，本站的服务可以很容易地应用于其他实施网络审查的国家和地区（包括美国）。但是目前，我们专注于中国的网络审查状况。
使用图片和暗语巧避中国网站的敏感词封锁百度，新浪微博等网站上有数以千计遭封锁的敏感词。你可通过以下方法让审查人员不好过，不容易发现敏感词：上传含敏感词的图片或使用其他方式描述同一个事件。【如暗语，谐音等，其他例子】。使用 HTTPS 规避国外网站的敏感词封锁如果你使用 https://www.google.com.hk，而不是 http://www.google.com.hk的话，GFW将无从监控你的搜索。因此，当你输入本站监测的数以千计被屏蔽的敏感词时，连接也不会被重置。类似地，使用 https://zh.wikipedia.org，你可浏览所有维基百科页面包括被... 更多
除了我们，没有其它网站能够实时的告诉人们，当前有哪些网站或关键词在中国被屏蔽。我们希望成为提供此类最新信息的首选场所。我们的目标是带给您中国防火墙网络封锁的最新资讯。
DNS即域名系统。这是一个全球性网络系统，能把域名（例如： domain.com）映射为IP地址（例如： 1.2.3.4）。DNS污染是指对域名系统的刻意干扰，使域名指向不正确的IP地址。发生这种状况时，用户无法访问目标网站，或者被重定向到某个不同的网站。DNS查询会根据查询请求来源国家的不同，而返回不同的IP地址。这种状况已经有合理的解释。因此，目前为止，本站无法判断某个网站是否受到跟网络审查有关的DNS污染，我们只能断定某网站没有受到DNS 污染，如果满足：在美国访问时，主机域名指向某个IP 地址，同时在中国访问时，主机域名指向同一个IP地址。如果域名指向不同的IP 地址，该网站有可能受到DNS污染。网站是否被dns污染，还有其他判断标准，如连接被重置，访问超时等。 
一个显著的例子是Skype。在中国大陆访问skype.com网站，用户会被重定向到另一个网站skype.tom.com。该网站实际上属于Skype在中国大陆的合作伙伴——TOM集团。TOM版Skype软件从界面上看非常类似原版Skype，且用户未被告知访问的网站被重定向。然而，TOM版Skype服从中国大陆的信息审查制度。也就是说，用户所有的个人隐私数据、通话和聊天内容都会被过滤、被服务器记录、并受到政府安全部门的监视。 如果某网站同时满足以下条件，我们就认为该网站通过被重定向的方式，遭受信息屏蔽：当用户从美国登录时，最终的URL网页请求（包含重定向之后的）指向的IP地址属于中国大陆之外的服务器。并且，当用户从中国大陆登录时，最终的URL网页请求（包含重定向之后的）指向的IP地址属于放置在中国大陆的服务器。 
中国政府要求所有服务器在中国大陆的网站都要实施自我审查。自我审查的形式多样，与监控外国网站相比，更加复杂，而且难以追踪。当用户在这些网站搜索特定关键字时，网页会显示某些信息，间接承认了自我审查的存在。例如百度，如上图所示，当用户搜索敏感的关键字时，网页会显示如下信息：根据相关法律法规和政策，部分搜索结果未予显示。然而，这并不意味着只有显示类似信息的搜索才受到监控。更合理的解释是显示类似警告信息的搜索所含的关键字特别敏感，相比其他搜索关键字，这类关键字受到更高层级的监控。若在某网站的内置搜索引擎搜索某关键字，而显示如下或类似的信息：根据相关法律法规和政策，部分搜索结果未予显示，则我们可以认为该网站实施自我审查。 
网络连接超时意味着用户的网站请求被中国防火墙（GFW）刻意干扰，无法得到目标网站的响应，从而无法加载目标网页。这时，浏览器会显示如下信息：网络连接超时。若没有翻墙（墙即GFW）工具，用户将无法判断这是网站服务器出现问题，还是GFW的干扰。因而，多数用户都把连接超时的问题归咎于目标网站自身。本站基于以下条件判断网站的连接超时是由GFW 所为：在美国访问目标网站，网站请求在15秒内得到服务器响应在中国访问目标网站，网站请求超过15秒无响应。 我们在2011年1月开始收集有关中国防火长城的信息，并建立网站 GreatFirewall.biz 公开发布这些信息。2011年10月，我们的域名改为 GreatFire.org。我们将继续努力，添加和改进各种被屏蔽的网站和搜索关键字等信息。建站初始，本站只对几百个网站进行测试，但现在，我们监测的网页地址已经超过10，000个。
Our data comes from the following sources:
1. User additions. Anyone can add a new URL for testing and it will be continuously tested by our system.
2. Collaboration with other projects. Any URL that's marked as blocked in China by these sources is automatically imported into our system: Autoproxy, China Digital Times and Herdict. Each keyword in our system - be it on on Baidu, Google, Weibo or Wikipedia - corresponds to a URL on that website which is tested for censorship similarly to how any other URL is tested. These keywords are mainly added by users. China... 更多
由于本站内容的敏感性，我们决定继续保持匿名状态。当然，你可以通过 greatfire dot org 或者推特帐号 @GreatFireChina 联系我们。
- 带给您中国防火墙封锁的最新资讯
评论
Hi Sir/Miss, I just did url test in your website and found that our website (www.wes.sg) is 100% blocked in China. Can i know why it has blocked and what should we do to make it unblock? Thanks a lot.
Facking china democracy
Your test says that pinterest is not blocked, but it's redirecting to a Chinese search engine (either www.sogou.cn or o66.cn). Only been for the last 12 hours or so. And the captcha's not working on images...
what is the difference between blocked and restricted?
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I am currently posting your and theFreeWeibo.org name on Weibo, will anyone in China be able to read it?
I wonder for what government this website is acting? Censorship in China is a particular object of maintaining stability and in order to develop its economic growth because of its historical and cultural features. it is indeed a developing country (so everything could not be perfect and can be perfect right now) with a very diverse cultural, religious and ethnic diversity (a billion and a half people!), but also because of its recent communist chapter. All countries in the world seeks to cultivate patriotism and stability in order to enrich and avoid the risk of civil war - can lead to an internal implosion and human massacres. Is this is what you want for China? and why do not you monitor the U.S.?
To alean:
Do you seriously believe the combination of censorship and one-party rule is the formula for stability longer term? I feel sorry for all Chinese for not having the freedom to speak our mind and having to accept lying as part of everyday life. Is this kind of "stable" life the best Chinese people can hope for?
Do you have open API or any other way I can use to download the uncensored data for research purpose?
Greatly appreciate what you did! really a good job!
Do you have open API or any other way I can use to download the uncensored data for research purpose?
Greatly appreciate what you did! really a good job!
当然,我是翻墙来这里的.
希望这个网站能从技术上推动民主
当然,我是翻墙来这里的.
希望这个网站能从技术上推动民主
当然,我是翻墙来这里的.
希望这个网站能从技术上推动民主
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Hi there.
I've just found my website www.amuletbhutan.com is 100% blocked. Is there any functionality on this site to that may be able to explain a reason for this?
HI! i performed the test on a web i created and i got a 50% blocked result. In the details i got the following data: "28 (CURLE_OPERATION_TIMEDOUT)".
What does it mean? Can i fix that?
Could you please tell me more about this? the url is http;//www.raulpardeilhan.com
Thank u very much!
my e-mail: nmartorelli@gmail.com
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我们都热爱我们的祖国，但是我们反对互联网审查和对于隐私的窃取。
我们都热爱我们的祖国，但是我们反对互联网审查和对于隐私的窃取。
请问下，目前在大陆还有没有哪个聊天软件能有效避免被言论管制？
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杀软一直avast，不能更新了，都没用过内置的vpn。今天想看看能否登上官网，竟然跳转到一黄网。要被爹妈看见，真是有嘴都说不清。对政府无语。
用自由门翻墙后看到关于你们的一篇文章，然后第一次来这里，我要说一声：谢谢！你们辛苦了！
我是来点赞的，不过说实话我不知道这网站有啥用呢。。翻墙没用上啊。。
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Thanks, really helped me alot, just have my blog (TSFZ UK) tested, it is 100% blocked...I don't understand why a blog about health & entertainment is not available..
Hi, I have put the widget on my homepage, but always see this error message: "Sorry, that seems to be an invalid URL." My URL is http://jinglei.ren.systems. Would you kindly accept these new domain extensions like mine? Many thanks!
Dear Sir:
this week I travel to China, and happen to learn that our co website: www.hkaac.net was 100% blocked
(Blocked URLS, as per your website test). Actually our website is purely a professional technical machine website. If you get any idea that why our website was fully blocked. Any suggest of remedy? Thank you very much for your kind attention.
We love our country, but we strongly against the Internet policy in China.
Hey I just found your page and I'm happy to know my website http://binaryeuropa.com/ is 0% censored in China.
Appreciate what y'all are doing. Good work. Feel like Xi is closing up the country in all senses. Yaks.
I'm Chinese. I really appreciate your amazing efforts and work, and truly thank you all for your contributions to everyone with access to this website.
傻逼，操尼玛
I have to say that you guys are freaking awesome!
艹尼玛的GFW，什么时候联合全世界hacker把他干掉
艹尼玛的GFW，什么时候联合全世界hacker把他干掉
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