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centos7.x搭建Tor私人网桥

1. 下载并安装 Tor

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yum install tor -y

2. 安装 obfs4

通过python进行编译安装:

(1)安装 所需依赖软件模块:

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yum install make automake gcc python-pip python-devel libyaml-devel

(2)安装 obfs4proxy:

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pip install obfsproxy

通过go进行编译安装:

(1)下载go的obfs4项目:

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git clone http://www.github.com/Yawning/obfs4

(2)进入obfs4目录进行编译:

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go build -o obfs4proxy/obfs4proxy ./obfs4proxy

(3)复制bofs4proxy到系统工作目录下:

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cp ./obfs4proxy/obfs4proxy /usr/bin/obfs4proxy

3. 配置 Tor Bridges

编辑/etc/tor/torrc

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vim /etc/tor/torrc

定义一个 ORPort,不作为出口节点,设置成 Bridge:

Log notice file /var/log/tor/notices.log

RunAsDaemon 1

ORPort 6666

Exitpolicy reject :

BridgeRelay 1

ServerTransportPlugin obfs4 exec /usr/bin/obfs4proxy

ExtORPort auto

PublishServerDescriptor 0

重启tor服务:

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systemctl restart tor

查看tor服务状态

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systemctl status tor

4. 使用网桥

查看日志文件,命令:

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tail -F /var/log/tor/notices.log

内容如下:

[notice] Your Tor server’s identity key fingerprint is ‘Unnamed

530FA95A79B9145D315F15F01215BE2F3BE921EB’ [notice] Your Tor bridge’s

hashed identity key fingerprint is ‘Unnamed

83D1AC9EC2F15D7024278461DC91A8B2E9BBF43A’ [notice] Registered server

transport ‘obfs4’ at ‘[::]:46396’ [notice] Tor has successfully opened

a circuit. Looks like client functionality is working. [notice]

Bootstrapped 100%: Done [notice] Now checking whether ORPort

:6666 is reachable… (this may take up to 20 minutes –

look for log messages indicating success) [notice] Self-testing

indicates your ORPort is reachable from the outside. Excellent.

注意:记住输出中 obfs4 监听的端口(本例中是 46396)。并且还能找到你的 server identity fingerprint(本例中是 530FA95A79B9145D315F15F01215BE2F3BE921EB),也复制下来。

在 /var/lib/tor/pt_state/obfs4_bridgeline.txt 文件中可以看到类似如下的内容:

Bridge obfs4 :

cert=oG6a3K7CtearIloUp2OCUk60oNMgw+jVgCNhGumMkODS659UEgRRx7yxZuoEo9Crp9GGXg

iat-mode=0

根据日志中的信息获得最终的网桥配置: obfs4 :46396

530FA95A79B9145D315F15F01215BE2F3BE921EB

cert=6LMNcXh6MIfApbZiMksnS4Kj+2sffZ5pybSqtcOO5YoHgfrMpkBJqvLxhuR2Ppau0L2seg

iatmode=0

  1. 防火墙firewalld放行端口

编辑防火墙公共配置/etc/firewalld/zones/public.xml文件,命令:

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vim /etc/firewalld/zones/public.xml

内容如下(本例ORPort端口 => 6666, obfs4端口 => 46396):

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<port protocol="tcp" port="ORPort端口"/>
<port protocol="udp" port="ORPort端口"/>
<port protocol="tcp" port="obfs4端口"/>
<port protocol="udp" port="obfs4端口"/>

使防火墙配置生效,命令:

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firewall-cmd --complete-reload

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