f7的防火牆gui設置工具有bug，不能存儲其他端口的配置，但系統缺省端口是可以的，所以除了自己編輯system-config-securitylevel文件外，也可用gui工具的這個特點保存其他端口設置
就像Bugzilla Bug 240791所說
I can confirm this problem in Fedora 7 (Moonshine). Another workaround is to add the "Other port" you need and then check and uncheck one of the predefined service ports. Then you are finally asked if you want to save the config.
