How to confirm server port is OPEN
<p>查看端口tcp映射是否导通方法：telnet+ip+port</p>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitfile/sign/a303967419ac3f47ed9d99337a7436d5" alt="" />
如果出现以下错误，需要打开新的功能更
<img src="https://www.showdoc.com.cn/server/api/attachment/visitfile/sign/84e3f67f32bd37deb2ea0b7c8cc4b2c0" alt="" />
<img src="https://www.showdoc.com.cn/server/api/attachment/visitfile/sign/7c7cc6955df3f4b449972e3b42b62a33" alt="" />
<img src="https://www.showdoc.com.cn/server/api/attachment/visitfile/sign/262d9d4cbed2291e35c9c6b49b0be4dd" alt="" />
<img src="https://www.showdoc.com.cn/server/api/attachment/visitfile/sign/933015b3e34a61469ea38daa97511337" alt="" /></p>
<p>重新输入，例如 telnet 47.75.76.228 6608
链接成功后
<img src="https://www.showdoc.com.cn/server/api/attachment/visitfile/sign/b047bc4f39754b9ad80cf3bfbcf9c43f" alt="" /></p>