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Wireshark 101: Expressions Examples; HakTip 121 Video Lecture | Start Using Wireshark: Do Hacking like a Pro - Back-End Programming

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FAQs on Wireshark 101: Expressions Examples; HakTip 121 Video Lecture - Start Using Wireshark: Do Hacking like a Pro - Back-End Programming

1. What is Wireshark and how does it work?
Ans. Wireshark is a network protocol analyzer that captures and displays network traffic. It allows users to inspect packets and analyze network protocols. Wireshark works by capturing packets from a network interface or reading a packet capture file, decoding the packets, and providing detailed information about the network traffic.
2. What are Expressions in Wireshark and how are they used?
Ans. Expressions in Wireshark are used to filter and display specific network packets based on certain criteria. They can be used to filter packets by protocol, source or destination IP address, port number, and various other fields. Expressions use logical operators and comparison operators to define the filtering criteria.
3. Can you provide an example of an expression in Wireshark?
Ans. Sure! An example of an expression in Wireshark could be "ip.src == 192.168.0.1 && tcp.dstport == 80". This expression filters and displays packets that have a source IP address of 192.168.0.1 and a destination TCP port of 80.
4. How can I use expressions to filter HTTP traffic in Wireshark?
Ans. To filter HTTP traffic in Wireshark, you can use the expression "http" or "tcp.port == 80". The "http" expression filters packets that contain HTTP protocol, while the "tcp.port == 80" expression filters packets that use TCP port 80, which is commonly used for HTTP.
5. Is it possible to create custom expressions in Wireshark?
Ans. Yes, it is possible to create custom expressions in Wireshark. Wireshark provides a wide range of built-in fields that can be used in expressions. Additionally, users can define their own custom fields using display filters or by creating custom Lua dissectors. This allows for more advanced and specific filtering options based on the user's requirements.
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