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Category Archives for "tutorial"

May 10

How to Do TCP Sequence Number Analysis

By Kary | tutorial

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 […]

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Jul 30

How to Troubleshoot Throughput and TCP Windows

By Kary | tutorial

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 […]

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Jul 07

How to Prove It’s Not the Network

By Kary | tutorial

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. […]

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May 25

How to Hack a Cisco Router ACL

By Kary | tutorial

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 […]

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