How to Allow a Ping in Ubuntu
The ping command is useful for debugging and testing networks for good levels of performance. You can allow a ping to be sent in Ubuntu even if the command is restricted, by running it with root-level permissions. Although the command can then be sent, you'll also need to know the name of the computer you're attempting to ping.
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Instructions
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Open a new Terminal window by clicking "Start" and selecting Applications, then Accessories and finally Terminal.
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Type "su root" without quotation marks, then press "Enter." Type your root password, then press "Enter" again.
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Type "ping host" where "host" is the IP address or network name of the computer you'd like to ping. For example, "ping google.com." Again, leave off the quotation marks.
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