ConceptsIPv4

IPv4

Internet Protocol version 4: the long-dominant IP addressing scheme using 32-bit addresses written as four numbers (like 192.168.1.1). Its limited address space led to NAT and the development of IPv6.

Glossary definition

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Concept Neighborhood

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IP Addresses

The most substantial related concept here, covered by 8 lessons.

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Builds towardIPv4 is a foundation for these

IP Address

An IP address is a network address used to identify a device or service so traffic can be routed to it.

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IP AddressesStart here

lessons

IPv6

lessons

CIDR Notation

lessons

Private Address Space

lessons

Default Gateway

lesson

NAT

lesson

Show 1 more connection

PAT

lesson

Related Lessons

8 lessons cover this concept

Network Layers and Why They Matter

General Beginner

Network Identity: IP Addresses, MAC Addresses, and Attribution

General Beginner

Ports, Protocols, and Services

General Beginner

DNS Resolution and Name-to-Address Mapping

General Beginner

NAT, Routing, and Traffic Paths

General Beginner

Firewalls and Segmentation

General Beginner

Common Application Protocols and Defender Relevance

General Beginner

Thinking About Networks Like a Defender

General Beginner