private IP address

private IP address

Introduction

What is a Private IP Address?

A private IP address is used within a private network (e.g., home, office) and is not accessible directly from the internet. It allows devices within the same network to communicate with each other

Why Private IPs?because public IP addresses are really simple to hack, so private enhances security by keeping internal devices hidden from the internet Example: 192.168.1.1 is a common private IP address used for routers

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01

Private IP Address Ranges

Private IP Address Ranges

Three Reserved Ranges: Class A: 10.0.0.0 to 10.255.255.255 (large networks). Class B: 172.16.0.0 to 172.31.255.255 (medium networks). Class C: 192.168.0.0 to 192.168.255.255 (small networks, like home networks). Example: 192.168.1.1 falls within the Class C range (192.168.0.0 to 192.168.255.255).

02

Why Use Private IP Addresses?

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Cost-Effective: Reduces the need for purchasing public IP addresses.

Efficiency: Allows reuse of IP addresses across different private networks.

Security: Private IPs are not directly accessible from the internet, reducing the risk of attacks.

recap

did you know?

Did you know? The IP address 127.0.0.1 is called the 'loopback address' it always refers to your own device Try typing it into your browser, and you'll see what happens

Remember, 192.168.1.1 is a private IP address because it falls within the Class C range (192.168.0.0 to 192.168.255.255), making it perfect for secure, internal networks!