Network - Private Network

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1 - About

A private network has no Internet access whereas a public one has.

A private network is also known as private subnet

A private subnet connect a host to the Internet without exposing their private IP address by routing their traffic through:

that are located in a public subnet.

A private network is a network that uses RFC 1918 IP address space.

To allow organizations to freely assign private IP addresses, the NIC has reserved certain address blocks for private use.

It can host the backend systems such as databases or application servers

Advertising

3 - Block

The following IP blocks are reserved for private IP addresses.

Class Starting IP Address Ending IP Address
A 10.0.0.0 10.255.255.255
B 172.16.0.0 172.31.255.255
C 192.168.0.0 192.168.255.255

In addition to above classful private addresses, 169.254.0.0 through 169.254.255.255 addresses are reserved for Zeroconf (or APIPA, Automatic Private IP Addressing) to automatically create the usable IP network without configuration.

4 - Documentation / Reference

network/private.txt · Last modified: 2019/05/27 20:48 by gerardnico