If you run into any trouble while setting up your bridge, check out our help page. Note that an obfs4 bridge needs both an open OR *and* an open obfs4 port. We have guides for several Linux distributions, FreeBSD, OpenBSD, and docker. To set up an obfs4 bridge, check out our newly revised installation instructions.
Bridges are a great option if you can only run a Tor node from your home network, have only one static IP address, and don't have a huge amount of bandwidth to donate - we recommend giving your bridge at least 1 Mbit/sec and it should run 24/7. A bridge isn't likely to receive any abuse complaints, and since bridges are not listed in the public consensus, they are unlikely to be blocked by popular services. Setting Up a Bridgeīridges are relatively easy, low-risk, and low bandwidth to operate, but they have a big impact on people where the internet is under oppressive control. This is where we need your help.īy setting up an obfs4 bridge, you can help censored users connect to the open internet through Tor. We therefore need a constant trickle of new bridges that aren't blocked anywhere yet. It's not enough to have many bridges: eventually, all of them could find themselves in block lists. Unfortunately, these numbers have been stagnant for a while. We currently have approximately 1,000 bridges, 600 of which support the obfs4 obfuscation protocol. Censored users are able to select bridges from BridgeDB or directly in Tor Browser’s Network Settings. Not only are bridges private, they can also modify their network packets in a way that it's difficult for an observer to conclude that somebody is using Tor.
Bridges are private Tor relays that serve as stepping stones into the network. However, thanks to bridges, Tor users are still able to connect to the network when the public Tor relays are blocked. All of the relays that make up the Tor network are publicly listed, so that means one way to try to prevent people from using Tor is to blacklist the public IP addresses of all of the thousands of Tor relays.įor example, the governments of China, Iran, and Kazakhstan exercise information control by trying to block Tor. Freedom to publish, share, and access information online is critical for a healthy society, yet governments and entities around the world deny people this universal human right. We believe everyone should have private access to the open internet, but not everyone is able to enjoy the luxury Tor provides.
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