Manual packet analysis

1. What are the 3 parts of a packet?
2. What is the hex value for the source port?
3. What is Wireshark used to analyze?
4. What are the 4 parts of a packet?
5. What is data packet structure?
6. What is a packet metadata?
7. What is size of TCP header?
8. How UDP is different from TCP?
9. How do I find the source number of a port?
10. What do the colors in Wireshark mean?

What are the 3 parts of a packet?

A network packet is divided into three parts; the header, payload, and trailer, each containing values that are characteristic of it.

What is the hex value for the source port?

Source port value in hex format is “0x0017” and the corresponding value in decimal format is port “23”.

What is Wireshark used to analyze?

Wireshark is a packet sniffer and analysis tool. It captures network traffic on the local network and stores that data for offline analysis. ... Wireshark allows you to filter the log either before the capture starts or during analysis, so you can narrow down and zero into what you are looking for in the network trace.

What are the 4 parts of a packet?

Here is what one of the four packets would contain: Each packet's header will contain the proper protocols, the originating address (the IP address of your computer), the destination address (the IP address of the computer where you are sending the e-mail) and the packet number (1, 2, 3 or 4 since there are 4 packets).

What is data packet structure?

A packet is also called a datagram, a segment, a block, a cell or a frame, depending on the protocol used for the transmission of data. ... The structure of a packet depends on the type of packet it is and on the protocol. Normally, a packet has a header and a payload.

What is a packet metadata?

What is the purpose of packet metadata? a. Metadata contains information about the protocols a specific computer uses to create and send packets.

What is size of TCP header?

TCP wraps each data packet with a header containing 10 mandatory fields totaling 20 bytes (or octets). Each header holds information about the connection and the current data being sent.

How UDP is different from TCP?

TCP is a connection-oriented protocol, whereas UDP is a connectionless protocol. A key difference between TCP and UDP is speed, as TCP is comparatively slower than UDP. Overall, UDP is a much faster, simpler, and efficient protocol, however, retransmission of lost data packets is only possible with TCP.

How do I find the source number of a port?

All you have to do is type “netstat -a” on Command Prompt and hit the Enter button. This will populate a list of your active TCP connections. The port numbers will be shown after the IP address and the two are separated by a colon.

What do the colors in Wireshark mean?

Wireshark uses colors to help you identify the types of traffic at a glance. By default, green is TCP traffic, dark blue is DNS traffic, light blue is UDP traffic, and black identifies TCP packets with problems — for example, they could have been delivered out-of-order.