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checking_if_icmp_is_blocked

To check which hosts have blocked ICMP, we can do this:

hping3 -1 192.168.1.x --rand-dest -I wlan0
# -1, specifies ICMP
# --rand-dest will test a random destination on the specified network
# -I, specifies the network interface

if the device replies then the ICMP is not blocked.