service tomcat stop
==== AUTHENTICATING FOR org.freedesktop.systemd1.manage-units ===
需要通過認證才能停止“tomcat.service”。
Authenticating as: www,,, (www)

解決辦法：

sudo tomcat stop/start

方法來自Thread: Starting, Stopping, Restarting Services result in authentication from org.freedeskto

Well, I also was running tcpdump when I did the stuff for my reply, and there was no external communication.
These commands are fairly fundamental, so I don't think you can disable them, nor should you. Just always use sudo so that the command itself is always run as root.