How To Use Wireshark Network Analyzer

In this article we will use eth0 but you can choose another one if you wish.

How to use wireshark network analyzer. That s where wireshark s filters come in. Computers communicate using networks. Select file save as or choose an export option to record the capture. For an example if you want to see only dropped packets from these snoop data use tcp analysis lost segment filter just type these filter string in that wireshark tab and apply. How to use wireshark to analyze network performance.

Wireshark to a network engineer is similar to a microscope for a biologist. Don t click on the interface yet we will do so later once we have reviewed a few capture options. When you start typing wireshark will help you autocomplete your filter. The most useful capture options we will consider are. These networks could be on a local area network lan or exposed to the internet.

If you want to use wireshark to inspect your network and analyze all active traffic then you need to close down all active applications on your network. Wireshark lets you listen to a live network after you establish a connection to it and capture and inspect packets on the fly. To stop capturing press ctrl e. Once wireshark is installed launch the program to begin. The most basic way to apply a filter is by typing it into the filter box at the top of the window and clicking apply or pressing enter.

As a network engineer or ethical hacker you can use wireshark to debug and secure your networks. Network sniffers are programs that capture low level package data that is transmitted over a network. Select the shark fin on the left side of the wireshark toolbar press ctrl e or double click the network. For example type dns and you ll see only dns packets. An attacker can analyze this information to discover valuable information such as user ids and passwords.