规避审查

Direct access to the Tor network may sometimes be blocked by your Internet Service Provider or by a government. Tor Browser includes some circumvention tools for getting around these blocks. These tools are called “pluggable transports”.

可插拔传输类型

Currently there are three pluggable transports available, but more are being developed.

obfs4	obfs4 makes Tor traffic look random, and also prevents censors from finding bridges by Internet scanning. obfs4 bridges are less likely to be blocked than its predecessor, obfs3 bridges.
meek	meek transports all make it look like you are browsing a major web site instead of using Tor. meek-azure makes it look like you are using a Microsoft web site.
Snowflake	Snowflake是对Flashproxy的改进。 它通过WebRTC发送您的流量，WebRTC是一种具有内置网络地址转换（NAT）穿透的对等（P2P）协议。

使用可插拔传输

To use a pluggable transport, click 'Configure' when starting Tor Browser for the first time. In the window that appears, from the drop-down menu, select whichever pluggable transport you'd like to use.

Or, if you have Tor Browser running, click on 'Preferences' in the hamburger menu and then on 'Tor' in the sidebar. In 'Bridges' section, check the box 'Use a bridge', and from the drop-down menu 'Select a built-in bridge', choose whichever pluggable transport you'd like to use.

Once you've selected the pluggable transport you'd like to use, click 'Connect' to save your settings.

我该使用哪种传输方式？

Each of the transports listed in Tor Launcher’s menu works in a different way, and their effectiveness depends on your individual circumstances.

If you are trying to circumvent a blocked connection for the first time, you should try the different transports: obfs4, snowflake, and meek-azure.

If you try all of these options, and none of them gets you online, you will need to enter bridge addresses manually.

Read the Bridges section to learn what bridges are and how to obtain them.