
42 ◾ Network Attacks and Defenses: A Hands-on Approach
At Host C, CommView sniffer is used to capture the four
exchanged packets. The analysis of the source and destination
MAC addresses of the four captured packets clearly indicates
that the exchanged ping traffic between Host A and Host B
has been forwarded to Host C.
The following screenshot reveals that an ICMP echo
packet (Packet #1) has been sent by Host A to Host C,
although the destination IP address of the packet is the IP
address of Host B.
The next screenshot shows that an ICMP echo packet
(Packet #2) has been forwarded by Host C to Host B,
although the source IP address of the pa ...