Nmap/ZenMap Switches Practice Test

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Which option performs an ICMP Ping?

-PS100,90

-PU100,90

-sU

-PI

ICMP Ping uses an ICMP Echo Request to check if a host is alive. In Nmap, the switch that implements this ICMP-based probe is -PI, which sends an ICMP Echo Request and waits for a reply. The other options use different probes: -PS sends TCP SYN probes to specified ports, -PU sends UDP probes to specified ports, and -sU performs a UDP port scan rather than a host reachability probe. So the ICMP Ping is performed by the -PI switch.

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