The process of analysis in Wireshark represents monitoring of different protocols and data inside a network.īefore we start with the process of analysis, make sure you know the type of traffic you are looking to analyze, and various types of devices that emit traffic: HTTP with Secure Sockets Layer – HTTPS (HTTP over SSL/TLS) If you want to learn about the most common ones, check out the following list: Port numberĭynamic Host Configuration Protocol – DHCP Different ports are used for different protocols. And public ports are ports from 49152-65535, they can be used by any service. Then, from 1024 to 49151 are registered ports – they are assigned by ICANN to a specific service. They can be divided into three different categories: ports from 0 – 1023 are well-known ports, and they are assigned to common services and protocols. Why would you want to do this? Because in that way, you can filter out all the packets you don’t want in your computer for different reasons. Some applications on the internet can open these ports, thus making your computer more exposed to hackers and viruses.īy using Wireshark, you can filter different packets based on their port number. In fact, there are over 65,000 different ports. There is a well-established system of ports used for different internet services, such as file transfer, e-mail, etc. Port filtering represents a form of protection for your computer since, by port filtering, you can choose to allow or block certain ports to prevent different operations within the network. These port numbers are used for TCP and UDP protocols, the best-known protocols for transmission. Port filtering represents a way of filtering packets (messages from different network protocols) based on their port number. If you want to learn more about Wireshark and how to filter by port, make sure you keep reading. By using it, you can check everything that’s going on within your network, troubleshoot different problems, analyze and filter your network traffic using various tools, etc. Wireshark represents the world’s most used protocol analyzer.
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