A PRACTICAL GUIDE TO TCP/IP
Understand the
network.
One layer at a time.
From your first packet to the cloud. Build a clear understanding of how networks work, and the confidence to make them work better.
Start with the fundamentalsYOUR LEARNING PATH
Make sense of every layer.
Start at the beginning, or follow your curiosity.
The OSI model
Follow a request through seven layers, from an application to the wire.
Explore chapterProtocols & ports
Learn what crosses the network and which protocol does the work.
Explore chapterIPv6 essentials
Read IPv6 addresses, understand prefixes and plan a dual-stack network.
Explore chapterNetwork security
Use explicit trust boundaries and verify the access each service needs.
Explore chapterCloud networking
Bring address plans, routing and trust boundaries into virtual infrastructure.
Explore chapterNetwork performance
Distinguish capacity, delay and loss before changing the network.
Explore chapterModern networking
Understand practical changes without confusing a roadmap with a guarantee.
Explore chapterTroubleshooting
Change one variable at a time, and let evidence choose the next step.
Explore chapter