Capturing Packets with tcpdump

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What is the first step to capture an HTTP PDU using Wireshark's Filter feature?

Analyze the first frame after launching Wireshark

Open Firefox browser and browse www.flipkart.com

Select 'any' interface and type in 'http' on the Filter toolbar (correct)

Make sure the filter is blank and follow a TCP stream

In Wireshark, what action should be taken after selecting the 'Follow TCP Stream' option?

View the packet details

Screenshot the entire window (correct)

Apply an HTTP filter

Start a new TCP stream capture

When capturing packets with tcpdump, what is a common command to specify an interface?

interface [interface] capture

capture -i [interface]

tcpdump -i [interface] (correct)

tcpdump -eth0

What information can be derived by analyzing the First Echo Request frame?

Source IP address Signup and view all the answers

What does the Time To Live (TTL) value indicate in packet communication?

Number of network hops a packet can traverse Signup and view all the answers

Why is it important to analyze both the HTTP request and response frames?

To understand the complete interaction between client and server Signup and view all the answers

What command should you use to capture all packets in any interface using tcpdump?

sudo tcpdump -i any Signup and view all the answers

How can you filter and capture only ICMP packets with tcpdump?

sudo tcpdump -i any -c5 icmp Signup and view all the answers

Which command captures HTTP content of a web request using tcpdump?

sudo tcpdump -i any -c10 -nn -A port 80 Signup and view all the answers

Why is the '-n' option used in the traceroute command?

To speed up the process by disabling IP address mapping with hostnames Signup and view all the answers

What does the '-I' option in traceroute command signify?

It enables ICMP usage for traceroute Signup and view all the answers

How can you capture packets to a file instead of displaying them on screen using tcpdump?

sudo tcpdump -i any -c10 -nn -w webserver.pcap port 80 Signup and view all the answers

What command is used to assign an IP address to a network interface?

sudo ifconfig interface_name 10.0.your_section.your_sno netmask 255.255.255.0 Signup and view all the answers

Which command is used to deactivate a network interface?

sudo ifconfig interface_name down Signup and view all the answers

What is analyzed in the Packet List Pane in Wireshark?

Time Signup and view all the answers

Which step should be taken to analyze frames with the first echo request and echo reply in Wireshark?

Select the first echo packet on the list and click on each of the four '+' in Packet Details Pane. Signup and view all the answers

What should you type in the terminal to show the current neighbor table in kernel?

ip neigh Signup and view all the answers

Which command is used to activate a network interface?

sudo ifconfig interface_name up Signup and view all the answers

Capturing Packets with tcpdump

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