TAP Into Technology Blog: Wireshark (2)
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 come upon symptoms in the packets that...
[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 “Baselines” that would only take a few minutes to...
[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 statically configuring them isn’t...
[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 interesting scenarios and questions to figure out.
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 and throat to get complete picture of...
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 SharkFest before. So when my friend...