Learn how the internet works with a simple guide on DNS, IP addresses, and routing—explained clearly to show how online connections happen in seconds.

Routing is the process of determining where to send data packets that are destined for addresses outside the local network. Routers gather and maintain routing information to enable the transmission ...

The open systems interconnect (OSI) model provides the standardization of a communication system by breaking it into seven layers. From lowest to highest, these are physical,data link, network, ...

Global Unicast Addressing, Routing, and Subnetting: This section introduces the concepts behind unicast IPv6 addresses, IPv6 routing, and subnetting using IPv6, all in comparison to IPv4. IPv6 ...

Joel is an internationally recognized expert in the areas of security, networking and messaging. Follow him on X (formerly Twitter) @joelsnyder. Building enterprise networks with routers and switches ...

Internet Protocol (IP) has emerged over the past decade as the most deployed data communications transport protocol. To a certain extent, IP's unanimous adoption is due to its simple nature and open ...

To thoroughly understand routing, you need to understand routing tables. In this Daily Feature, Deb Shinder explains how routing tables are used, the information they contain, and how to view and ...