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obsidian-sync/问题排查/踩坑记录/docker 映射后无法远程访问服务.md

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排查过程： 1.检查防火墙和端口出入规则 firewalld和iptables 2.检查IP转发是否开启 出于安全考虑，Linux系统默认是禁止数据包转发的。所谓转发即当主机拥有多于一块的网卡时，其中一块收到数据包，根据数据包的目的ip地址将数据包发往本机另一块网卡，该网卡根据路由表继续发送数据包。这通常是路由器所要实现的功能。 要让Linux系统具有路由转发功能，需要配置一个Linux的内核参数net.ipv4.ip_forward。这个参数指定了Linux系统当前对路由转发功能的支持情况；其值为0时表示禁止进行IP转发；如果是1,则说明IP转发功能已经打开。 执行以下命令，如果为0说明没有开启

sysctl net.ipv4.ip_forward

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