Analyzing packets with Wireshark

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1. What is Wireshark? πŸ–₯️πŸ”

Wireshark is a network protocol analyzer used to capture and inspect network packets in real time.

  • Helps troubleshoot networks 🌐

  • Detects malicious traffic 🦠

  • Monitors protocols πŸ“‘

2. Why Use Wireshark? 🎯

  • Analyze network performance πŸ“Š

  • Detect intrusions & malware πŸ›‘️

  • Debug network protocols πŸ–₯️⚙️

  • Learn network communication patterns 🧠

3. Wireshark Basics πŸ› ️

Installation & Setup πŸ’»

  1. Download from Wireshark.org 🌐

  2. Install on your OS (Windows, Linux, Mac) πŸ–₯️

  3. Run as administrator/root for full packet capture πŸ§‘‍πŸ’»

Capture Packets πŸ“¦

  • Select the network interface (Wi-Fi, Ethernet)

  • Click Start Capture ▶️

  • Stop capture when done ⏹️

4. Packet Analysis Components 🧩

  1. Packet List Pane πŸ“œ – Shows captured packets sequentially.

  2. Packet Details Pane πŸ” – Expand each packet to see protocol layers (Ethernet, IP, TCP/UDP, HTTP, etc.)

  3. Packet Bytes Pane πŸ’Ύ – Shows raw packet data in hexadecimal and ASCII.

5. Common Filters in Wireshark 🎯

Filters help focus on specific traffic:

  • IP Address:

ip.addr == 192.168.1.10

  • Protocol:

tcp
udp
http

  • Port:

tcp.port == 80

  • Source/Destination:

ip.src == 192.168.1.1
ip.dst == 8.8.8.8

6. Useful Features πŸ› ️

  • Follow TCP Stream πŸ”— – View entire communication between two hosts

  • Color Coding 🌈 – Quickly identify packet types (green = HTTP, blue = DNS, etc.)

  • Statistics πŸ“Š – Protocol hierarchy, conversations, endpoints

  • Export Data πŸ’Ύ – Save captures for reports

7. Best Practices ✅

  • Capture only authorized networks ⚖️

  • Use filters to reduce noise 🧹

  • Regularly update Wireshark ⬆️

  • Analyze suspicious packets carefully πŸ‘€

  • Avoid capturing sensitive data without consent πŸ”’

πŸ’‘ Tip: Think of Wireshark like a microscope for your network πŸ§ͺπŸ”—you can see every packet moving in and out!

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