<p>Even if check_icmp has the capabilities to work, it complains about needed root privilidges:</p>

<p>waja@bb:~$ /usr/lib/nagios/plugins/check_icmp -H google.com<br>
Warning: This plugin must be either run as root or setuid root.<br>
To run as root, you can use a tool like sudo.<br>
To set the setuid permissions, use the command:<br>
    chmod u+s yourpluginfile<br>
OK - google.com: rta 17.559ms, lost 0%|rta=17.559ms;200.000;500.000;0; pl=0%;40;80;; rtmax=17.635ms;;;; rtmin=17.387ms;;;; <br>
bb:~# getcap /usr/lib/nagios/plugins/check_icmp<br>
/usr/lib/nagios/plugins/check_icmp = cap_net_raw+ep</p>

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