What Is Packet Analysis Tool?

What is Packet Analysis Tool? When it comes to Packet Analysis Tool, SPOTO will talk about packet first. Packet is a data unit in TCP / IP protocol communication transmission. Usually, the data packet is divided into two parts, one is the control information (header) and the other is the data itself (payload). We can compare a data packet to a letter. The header is equivalent to an envelope, and the dataof the data packet is equivalent to the content of the letter.

What Is Packet Analysis? 

Then, packet analysis can be simply understood as reading the content of this letter, that is, packet analysis refers to the process of capturing and analyzing the online transmission data on the network. Packet Analysis technology can be used to understand the network characteristics,view the communication subject on the network,confirm who or which applications are occupying the network bandwidth,identify the peak time of network use,identify possible attacks or malicious acts,look for unsafe and abusive applications of network resources to achieve the goal.

What Is Packet Analysis Tool? 

After understanding packet analysis, it is easy to understand what packet analysis tool is. A simple understanding of packet analysis tool is actually a means to help us better capture and analyze online data transmission on the network. Some people will also call Packet Analysis Toolpacket sniffer.

Working Principle of Packet Analysis Tool 

The working principle of Packet Analysis Tool mainly involves the cooperation between software and hardware, which is divided into three steps: collection, transformation and analysis, but not all packet analysis tools will carry out these three complete steps. Next, let’s introduce these three steps in detail.

Collection is the collection of raw binary data from the network cable by Packet Analysis Tool. Generally, packet capture is completed by setting the selected network card to hybrid mode. In this mode, the network card will grab all the network traffic on a network segment, not just the packets sent to it. However, the collected binary data cannot be understood. The next step is to convert the captured binary data into a readable form. Some advanced command-line packet analysis tools can finish this step.After the conversion, the packets on the network will be displayed in a very basic parsing way, and then most of the analysis work will be left to the final user. Then, if there is a packet analysis tool for analyzing this step, it will analyze it. It will conduct a real in-depth analysis of the captured and converted data. It takes the captured network data as the input, identifies and verifies their protocols, and then starts to analyze the specific attributes of each protocol.

The above are the working principles of packet analysis tools.

Recommended Packet Analysis Tools 

SPOTO recommends several easy-to-use packet analysis tools here. Tcpdump, OmniPeek and Wireshark are all very good. We won’t introduce them specifically. In addition, if you want to choose a good packet analysis tool, you can consider the supported protocol, supported operating system and required cost. spotodumpscert dumps

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