Is there a way to know who is pinging my PC on my network? Is it possible to monitor all ICMP packets? How can I do that?
Yes, that is possible using tcpdump, which is a most powerful and widely used command-line packet sniffer (package analyzer) tool available on Linux.
In the terminal application of the computer you want to monitor :
sudo tcpdump -i ethX icmp and icmp[icmptype]=icmp-echo
Options:
-n avoid a (potentially slow) reverse DNS query
−i interface
icmp[icmptype]=icmp-echo To print all ICMP packets that are echo requests/replies
The it will start listening on ethX and waiting for arrived packets.
Example : I have 2 pc win7 10.1.1.8 , Ubuntu 10.1.1.57 which will monitor packets arrived :
On ubuntu :
Reference : nixCraft
