SUBNETTING

📰 Medium · Cybersecurity

Learn subnetting basics and how to modify subnet masks to divide networks into smaller or larger logical networks

beginner Published 19 Jun 2026

Action Steps

Understand the relationship between decimal and binary numbers in IP addressing
Learn how to convert decimal numbers to binary
Practice calculating subnet masks using binary
Apply subnetting to divide a network into smaller or larger logical networks
Use online tools or calculators to simplify subnetting calculations

Who Needs to Know This

Network administrators and cybersecurity professionals can benefit from understanding subnetting to manage and secure networks effectively

Key Insight

💡 Subnetting is the process of modifying a subnet mask to divide a network into smaller or larger logical networks

Key Takeaways

Learn subnetting basics and how to modify subnet masks to divide networks into smaller or larger logical networks

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Title: SUBNETTING

URL Source: https://medium.com/@olaniyiseyi02/subnetting-c7fbcfc1bc46?source=rss------cybersecurity-5

Published Time: 2026-06-19T21:53:51Z

Markdown Content:
# SUBNETTING. Understanding Subnetting | by Olaniyi Oluwaseyi | Jun, 2026 | Medium

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# SUBNETTING

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**Understanding Subnetting**

Subnetting is the process of modifying a subnet mask to divide a network into smaller or larger logical networks depending on our needs.

Before diving deeper into subnetting, it is important to understand how decimal numbers relate to binary numbers, because subnetting calculations are performed using binary.

**Decimal and Binary in IP Addressing**

The numbers we usually see in an IP address (for example, 255.255.255.0) are written in decimal format. However, computers process network information in binary, which uses only 1s and 0s.

An IP address consists of four decimal sections, called octets.

Each octet contains 8 bits, and

8 bits = 1 byte

4 octets = 32 bits total in an IPv4 address

So an IPv4 address is made up of 32 bits or 4 bytes.

**Binary Conversion Using

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SUBNETTING

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