Is it possible to analyze ICMP packets with tcpdump?

The correct answer is A. Yes, tcpdump is not limited to TCP specific issues. Yes, it is possible to analyze ICMP packets with tcpdump. While tcpdump is often associated with capturing TCP packets, it is not limited to them and can capture and analyze any protocol that traverses the network, including ICMP, which operates at Layer 3 (Network Layer) of…

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Question

Options

AYes, tcpdump is not limited to TCP specific issues
BNo, use fw monitor instead
CNo, tcpdump works from layer 4. ICMP is located in the network layer (layer 3), therefore is not
DNo, since ICMP does not have any source or destination ports, but specification of port numbers is

How the community answered

(63 responses)

A
75% (47)
B
14% (9)
C
5% (3)
D
6% (4)

Explanation

Yes, it is possible to analyze ICMP packets with tcpdump. While tcpdump is often associated with capturing TCP packets, it is not limited to them and can capture and analyze any protocol that traverses the network, including ICMP, which operates at Layer 3 (Network Layer) of the OSI model. ICMP packets do not use ports, but tcpdump can filter and display these packets based on other criteria such as type and code fields.

Topics

#tcpdump#ICMP#packet capture#network troubleshooting

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