随着Comcast封杀P2P的一声枪响,全球的ISP都不约而同地开始了自己破坏网络中立的行为,Google的专家Vint Cerf当地时间周三正式公布了可供普通用户使用的工具,它可以检测出ISP是否在网络上做了手脚,这一名叫M-Lab的技术套件由谷歌新美国基金会开放技术研究所,PlanetLab联盟和各种学术研究人员共同开发.

Google的“测量实验室”中提供的三项诊断工具中(注：现在已经增加到5个了)，就有一项是帮助用户诊断是否被网络服务供应商封堵了BT端口。另有两项工具是帮助用户检查流量是否被主动干预。它可以检测网络连接速度,分析网络路径和应用诊断,找出ISP限制的地方,例如封杀BT,阻挠或限定特定用户和应用程序.

据Google发言人声称：“测量实验室”提供的工具可以帮助用户掌握其网络状况，并帮助研究人员确认和侦测网络服务供应商的行为。

为此Google将在全球12个国家安置总计36台检测服务器，其合作伙伴包括新美国基金(New America Foundation)和普林斯顿大学PlanetLab Consortium。

谷歌认为网络中立性的讨论是必要的,透明度一直是互联网创新,健康,成功的关键.
该新闻来自cnbeta+其他网站信息+derek我的话   杂糅合成 :D
访问:Measurement Lab (M-Lab)

首先google的这个服务可谓是相当强大专业，因为用PT无法下载，没办法，只能去使用这项服务查查原因，在我查的过程中，顺便给大家讲讲用法，这项服务不适合英语不是很好滴用户，所以我不会翻译的太详细，太多内容了，不好意思~~~

之前在网上随便搜了一下，居然没有这个m-lab的详细介绍和使用，所以就发一篇文章~~~

打开google测量实验室
可以看到网页网页很简洁，google的一贯优良作风，表达的信息也显而易见，直接点击测试进去啦~~~我只测试了两项，另外三项
Use tools running on M-Lab to test your Internet connection.

工具一： Network Diagnostic Tool
Test your connection speed and receive sophisticated diagnosis of problems limiting speed.
测试连接接收速度，诊断限制速度的原因

工具二：Glasnost
Test whether BitTorrent is being blocked or throttled.
测试bt下载是否限制

工具三：Network Path and Application Diagnosis
Diagnose common problems that impact last-mile broadband networks.
诊断常见问题For一英里之内宽带网络的影响

工具四： DiffProbe (coming soon)
Determine whether an ISP is giving some traffic a lower priority than other traffic.
确定ISP商是否网络应用优先级进行限制（应该是这么翻译）

工具五NANO (coming soon)
Determine whether an ISP is degrading the performance of a certain subset of users, applications, or destinations.
确认ISP服务商是否恶意的对终端用户的程序应用，目的地限制？（能力有限，囧）

我选择了第一项Network Diagnostic Tool进入测试，结果说明网速方面没有问题，也没有墙挡住（我就不翻译了啊） :oops:

然后选择了第二项Glasnost：
测试结果如下，别怕长，还是很容易懂的，最后警告了我可能TCP协议下6882端口可能被限制，想象办法看能不能让PT重新下载~~~ :cry:

注：如果文章中有错误之处，请不吝指教，本人水平有限~~~

Is BitTorrent traffic on a well-known BitTorrent port (6882) throttled?

The BitTorrent upload (seeding) worked. Our tool was successful in uploading data using the BitTorrent protocol.

There’s no indication that your ISP rate limits your BitTorrent uploads. In our tests a TCP upload achieved at least 103 Kbps while a BitTorrent upload achieved at most 187 Kbps. You can find details here.

The BitTorrent download worked. Our tool was successful in downloading data using the BitTorrent protocol.

There’s no indication that your ISP rate limits your BitTorrent downloads. In our tests a TCP download achieved at least 234 Kbps while a BitTorrent download achieved at most 232 Kbps. You can find details here.

Is BitTorrent traffic on a non-standard BitTorrent port (10010) throttled?

The BitTorrent upload (seeding) worked. Our tool was successful in uploading data using the BitTorrent protocol.

There’s no indication that your ISP rate limits your BitTorrent uploads. In our tests a TCP download achieved at least 133 Kbps while a BitTorrent download achieved at most 194 Kbps. You can find details here.

The BitTorrent download worked. Our tool was successful in downloading data using the BitTorrent protocol.

Is TCP traffic on a well-known BitTorrent port (6882) throttled?

Warning: Division by zero in /var/www/bb/bittorrent-blocking.php on line 948

Your ISP possibly rate limits all downloads at port 6882. In our test, a TCP download on a BitTorrent port achieved at least 352 Kbps while a TCP download on a non-BitTorrent port achieved at least 0 Kbps. You can find details here.

There’s no indication that your ISP rate limits all uploads at port 6882. In our test, a TCP upload on a BitTorrent port achieved at least 209 Kbps while a TCP upload on a non-BitTorrent port achieved at least 133 Kbps. You can find details here.

题外话，有兴趣的看看：

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