When application performance is slow, how do you know if it’s the network or the application? PacketBob* is gonna show you how to figure it out. This was a mail migration operation that was taking a long time. A glance over the capture and you might think the network is introducing some delays. If you understand […]
But more importantly, WHY you should do TCP sequence number analysis. Well, you know all those black and red packets in Wireshark? Sure, you’ve seen them, right? Scary, huh? What if someone says there’s a problem and you see a bunch of those packets in Wireshark. Is that the problem? This video will show an example of […]
Every case is different and your first steps depend on what the issue is. Let’s say someone complains of a performance issue and gives you a packet capture. That’s all you know. Where do you start? I’d probably try to get more information than spend time looking for something that I don’t know what I’m […]
Make sure you’ve read Understanding Throughput and TCP Windows before watching this video. I mean, you don’t HAVE to, but I recommend it. No one’s ever asked you why the network is slow, right? Hahahahahaaaaaaa haa ha. Ha. Oh man. What a funny joke. The better question is can you think of a day in which […]
Or prove that it is the network. If you’re a network engineer, how much time do you spend defending the network? Everyone points a finger at the network; it’s guilty until proven innocent. Everything looks good from your standpoint: monitoring, alerts, maybe some pings, download a file from a server…it all seems to check out. […]
In this video you will learn: How to connect to a server protected by a Cisco router ACL How to manipulate TCP flags of packets sent and received by your computer How I’m not a l33t h4x0r Ok, let’s go! Leave a comment: Do tell me what you liked and understood Do tell me what […]