Wireshark is a free source program for analyzing network packets of Ethernet and other networks. Wireshark is an essential tool for network administrators to troubleshoot network problems, but few can unlock its full potential. Having all the commands and useful functions in one place will definitely increase your work productivity. Developers find it convenient to use to debug protocol implementations, and network security engineers use it to test for security issues. QA engineers use it to test network applications. In general, the tool can be very useful in many other cases. The fact is that Wireshark gets access to a separate program for collecting packets from the network through the network card of the computer on which it is located. This program is based on the pcap protocol, which is implemented in libpcap for Unix, Linux, and macOS, as well as WinPCap for Windows. The installer for Wireshark will also install the necessary pcap program.
Wireshark filters reduce the number of packets you see in the Wireshark data viewer. This feature allows you to access packages that are relevant to your research. There are two types of filters: capture filters and display filters. Applying a filter to the packet capture process reduces the amount of traffic that Wireshark reads. However, to really appreciate its power, you have to start using it. So, in order to make this use easy, we have compiled a powerful Wireshark cheat sheet. All information is provided in this article in an accessible and understandable format that can be absorbed very quickly and easily.
Types of filters
Protocols – meaning
General filtering commands
Wireshark capture modes
Capture filter syntax
Display filter syntax
The main elements of the toolbar
Packet filtering (display filters)
Default columns in packet capture output
Sets an interface to capture all packets on the network segment to which it is associated.
Configures the wireless interface to capture all the traffic it can receive (Unix/Linux only)
Filters packets during capture.
Hides packages from the capture screen
ether, fddi, ip, arp, rarp, decnet, lat, sca, moprc, mopdl, tcp and udp
Use the same packet capture options as in the previous session.
Open the File Open dialog box to load the record for viewing.
Restart the active capture session.
It is very important.