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→troubleshooting steps for connection test
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<span style="color:red">WAN ● -------> ● LAN -------> ● server</span> | <span style="color:red">WAN ● -------> ● LAN -------> ● server</span> | ||
We met the trouble on WAN | We met the trouble on WAN (wide area network). If we do no have the administrative permission, the tests we can do as follows: | ||
* Testing on WAN: [http://downforeveryoneorjustme.com/ Down for everyone or just me?] more on [[Web_Ping#同時從世界各處測試網站連線 | Web Ping]] | * Testing on WAN: [http://downforeveryoneorjustme.com/ Down for everyone or just me?] more on [[Web_Ping#同時從世界各處測試網站連線 | Web Ping]] | ||
** Switch to different ISP? Is hardware firewall opened? | ** Switch to different ISP? Is hardware firewall opened? | ||