By limiting the use of ping on a regular user. The Linux admin in ubuntu usually change the file access mode ping itself. This makes the limitations of ordinary users to test access to a network via the Terminal.

Entrance to the terminal, login as root user, type the following command:

#chmod u-s /bin/ping

Above we use the command chmod (change mode), which means the code to add or reduce the access of a file, directory and more.

later when the user pings to an address, there will be a notice like this > icmp open socket: Operation not Permitted

return to open access, login as root user, type

#chmod u+s /bin/ping

Good luck!

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