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This command uses tcpdump to create a simple ICMP listener to test whether incoming ping (ICMP echo request) traffic is reaching my attacking machine. It’s useful for basic network connectivity testing and for verifying whether firewalls or routing configurations are blocking ICMP traffic.

Command Reference:

Interface: tun0

Filter: icmp and icmp[icmptype]=icmp-echo
Command: Copy References:

https://man7.org/linux/man-pages/man8/tcpdump.8.html