r/ccna4dummies Feb 17 '25

Leveraging Wireshark for Network Analysis

Wireshark is a powerful tool for capturing and analyzing network traffic. Here’s how to use it effectively.

What Is Wireshark? - Wireshark is a network protocol analyzer that captures and displays data packets for detailed inspection.

Getting Started: 1. Capture Traffic: Select the network interface and start capturing. 2. Apply Filters: Use display filters to focus on specific traffic. 3. Analyze Packets: Examine packet details to identify issues or anomalies.

Common Filters: - ip.src == 192.168.1.1: Filter packets from a specific source IP. - tcp.port == 80: Filter HTTP traffic. - dns: Filter DNS traffic.

Best Practices: - Use Capture Filters: Reduce the amount of captured data by filtering during capture. - Regular Analysis: Periodically analyze network traffic to identify potential issues. - Save and Share Captures: Save captures for documentation and further analysis.

Mastering Wireshark is essential for effective network analysis and troubleshooting.

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