Using Wireshark With Multiple Interfaces (by Tony Fortunato)
Top Three Network Problems that Kill Performance (by Chris Greer)

Network Overview And How It Impacts Your Analysis (by Tony Fortunato)

I thought this slide I use to demonstrate how network devices affect your packet and how you have to adjust for it depending on your location and the direction of the flow.

I like reviewing this and seperating the router and switch to better visualize the various function of network components.  Now that vendors have consolidated may network features into one physical device, it gets more difficult to figure out where things are going wrong.





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