Ep 110 – Network Tools

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In this episode, the team discusses some of their favorite network tools and troubleshooting methodologies. They begin with foundational commands like ping and traceroute, highlighting how these help determine network connectivity and pinpoint latency issues, especially when utilizing options like extended ping for MTU troubleshooting or the -D flag for faster traceroutes. The conversation then moves to crucial, yet often overlooked, tools such as checking logs for correlating events and telnet for verifying port connectivity at Layer 4. A significant portion of the discussion is dedicated to Wireshark, lauded for its ability to analyze packet captures and offer deep visibility into network traffic, and NetFlow, praised for tracing traffic flows and confirming whether data is entering and exiting the network as expected. The hosts also touch on more specialized, physical troubleshooting, like using an oscilloscope to analyze raw electrical signals on Ethernet cables and the utility of tap aggregation for collecting and analyzing network traffic efficiently, emphasizing the importance of a structured approach, often following the OSI model, to diagnose and resolve network issues.

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