以windowsgsm工具为例

效果就是在社区不会搜索到你的服务器
手册原文写的是:
Sets the visibility of your server. 1 is default and will make the server visible in the browser. Set it to 0 to make the server invisible and only joinable via the ‘Join IP’-button. Setting public to 0 is a good option if you wish to run a local LAN server, where players can join via the local IP of the server.