我们家里有一台 ZyXEL VMG8324-B10A 路由器。我可以通过 ssh 登录并使用 command portforward --help，这会产生以下输出：
Usage: portforward config <ServiceName> --wanintf <atm0.1|atm1.1|ptm0.1|ptm0.2|ptm0.3|eth4.1|eth4.2|eth4.3|eth3G> [--wanip <wanip>]
--sipaddr <ServerIP Addr> --sport <Trigger Start Port> <Trigger End Port>
--transport <Translation Start Port> <Translation End Port>
--proto <tcp|udp|tcpudp> <enable|disable>
portforward delete <ServiceName> --sipaddr <ServerIP Addr>
portforward show
portforward --help
我要更改的转发规则类似于 ( portforward show)：
Service Wan ServerIP Trigger End Trans. Trans.
# Status Name Intf. WanIP Address StartPort Port StartPort EndPort Portocol
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2 enable PC HTTP [conn] [old-ip] 80 80 …