S3SS10N Wednesday – Implementing Custom Subnet Masks

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S3SS10N Wednesday – Implementing Custom Subnet Masks

Published: August 15, 2016 | By: Kelly Handerhan | Views: 5656
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This Weeks S3SS10N Wednesday


This session covers implementing custom subnet masks and offers participants a quick and efficient shortcut to achieve this. By assigning a number, you subtract to get an increment which shows the network broken down into numerical increments. You can use this to discover the lowest value for an IP address. Essentially, we use the default subnet number to determine how many octets are needed to create the subnet mask. With a Class A or Class B address, this is pretty straightforward. However, with a class C a little more work is involved. To make sub netting easier, it is helpful to first understand decimal to binary.

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About This S3SS10N Wednesday's Contributor

Kelly Handerhan
Skilled and certified in CISSP, CASP, and PMP, SME Kelly has taught several courses on Cybrary and is highly praised for her ability to effectively communicate important information in a relate-able and understandable way.
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7 Comments
  1. Thanks a million times.yjo you the best.

  2. Just Marvelous .
    Merci !!

  3. Excelente presentación, claro y sencillo para todos los que se inician en el mundo del subneteo

  4. Well presented – thanks

  5. Kelly, you are ace: why? Because I say so.
    Seriously though, thanks for this. It has made this clear to me, and while I hate the math, I can at least do it.

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