TAP Into Technology Blog

Are my Packets Lying? 4 Things to Look for in Packet Traces

Packets don’t lie – well, most of the time. They tell the truth unless they have been captured incorrectly. In those cases, packets can tell bold-faced lies. When digging through trace files, we can...

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[Video] VLAN Analysis with Wireshark 2.0

When I teach Wireshark classes, I commonly get asked, “What do I do when I get back to my desk?”, “What if I can’t span a port, or don’t have a TAP?” I typically show my attendees dozens of...

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[Video] How To Determine DHCP Option 60 Value Using Wireshark

There are an increasing number of network attached devices, and trying to keep them organized gets to be challenging. Since different devices might require different IP configuration settings and...

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[video] Observing The Impact Multiple Default Gateways With Wireshark

I was speaking with a client the other day and they were asking me how Microsoft behaves if a device has two default gateways. One thing I have to say about my job and clients, I always get...

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Protect Your Network: Know Your Baseline Traffic

Everyone knows that a standard doctor’s visit begins with a review of your vital signs. They take your blood pressure, check your breathing, read your pulse and take a look at your eyes, ears, nose...

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SharkFest Europe: A Common Interest to Better Learn How to Analyze Captured Network Traffic

For packet geeks like me, the annual Wireshark conference SharkFest is the place to be in order to meet and network with other packet geeks. However, for various reasons I haven't been able to attend...

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