If someone wants to block one bridge, and the whole netmask is used to block this particular bridge, and others are on the same address space, those other bridges will be blocked too, as a side effect.Īvoid running bridges on the same IP address of your (public) relay.
Sequential IP addresses make it easier for a group of bridges being blocked by entities that want filters against the whole network CIDR i.e. Operators running more than 2 bridges should avoid sequential IP addresses. Serving to the networking 24/7 is vital for bridges, as those who really need to workaround censorship depend on Tor being always available As this being the pluggable transport with higher probabilities of passing through global censorship, we opted to choose this one. IPv6 is definitely a plus, but it's not required. To join the bridges campaign, you must follow these requirements:Īlthough Tor bridges can operate behind dynamic IP addresses, this scenario is not that optimal while thinking about others who need to regularly configure the new IP addresses manually. Once you have set up your bridge, find your bridge line ( our post-install instructions explain how) and send an email to If you are running more than one bridge, it's preferable to send all of them once. If you run into any trouble while setting up your bridge, check out our help page and our new Forum. 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.
For example, if you run 10 obfs4 bridges for one year, you can get the Golden Gate bridge kit, including 1 Tor hoodie, 2 Tor T-shirts, and a sticker pack. To show our appreciation for your volunteer work, we're offering unique and exclusive Tor reward kits. We will wrap up the campaign on January 7, 2022. The goal of this campaign is to bring more than 200 obfs4 bridges online by the end of this year. 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 decreasing since the beginning of this year. We currently have approximately 1,200 bridges, 900 of which support the obfs4 obfuscation protocol.
#How tor bridge work free
Thanks to our community of bridge operators, users in China, Belarus, Iran, and Kazakhstan can connect to the Tor network and access the free and open Internet. When the Tor network is blocked, users can get a bridge to circumvent censorship. Bridges are private Tor relays that serve as stepping stones into the network.
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