Posts By Timothy

Whilst the CCNA Security exam recommends disabling CDP in the production environment, I felt it didn't really explain in depth why it's a good idea. I mean sure, they mention that information about the device is leaked, but what information exactly is leaked? I ran a wireshark capture to find out!     I think the above screenshot of the CDP message explains it…

I recently purchased TCP/IP Illustrated, Vol 1: The Protocols (Highly suggest picking this up, it's extremely insightful, and I hope to learn a LOT more about TCP in the near future) and have been diving into networking as a whole a lot more; one such piece of text I read was on the Windows 'nslookup' tool I hadn't previously known much…

Below is an article I found (Got side tracked when looking up if CEF supports IPv6 or if it punts additional IP headers to the CPU - next post perhaps?) about how and when the Cisco IPS inspects traffic. I found IDS and IPS was one of the more interesting topics covered in the CCNA Security Curriculum, so much in…

I'll start off by noting that I failed the 640-554 exam late last month. I found there was quite a bit of content which I either didn't cover as much as I thought I'd need to, or the material I used to study didn't cover the knowledge as deep as I needed. After knuckling down and studying into the topics…

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