Secplicity Blog
Cybersecurity Headlines & Trends Explained
Understanding IPv4 Subnetting (Part 1)

This Security Fundamentals article explains what IPv4 subnets are, what a subnet mask is, and how you might use them within your own network.
What Is a Port? (and Why Should I Block It?)

A port is a made-up, or logical, endpoint for a connection, and ports allow the Internet to handle multiple applications over the same wires. Your system figures out how to treat data coming at it partially by looking at what port the data is destined for.
Understanding IP Addresses and Binary

An IP is a numeric identifier that represents a computer or device on a network. Your computer's IP is like your home's mailing address.
Internet Protocol for Beginners

Here's how IP routing works, and some suggestions for gaining deeper understanding of IP.