Tag: Networking
What Is the OSI Model? The Seven Network Layers
Learn the 7 layers of the OSI model, from physical to application, and why this networking standard still matters today.
Learn VPS: From Server Basics to Your First Deployment
New to servers? Learn what a VPS is, how it compares to shared hosting, and how to deploy your first website on one.
What Are Binary and Hexadecimal Number Systems?
New to binary and hexadecimal number systems? Learn how they work, how to convert IP addresses, and how hex powers CSS colors.
What Is an IP Address? IPv4 vs IPv6, Public vs Private
New to networking? Learn what an IP address is, how IPv4 and IPv6 differ, and the difference between public and private addresses.
How to Set Up an SFTP Server on Linux
Step-by-step guide to setting up a secure SFTP server on Linux with OpenSSH, including chroot-jailed users, key-based authentication, and troubleshooting tips.
What Is SSH? A Beginner's Guide to Secure Remote Login with SSH Keys
Learn what SSH is, how it works, and how to set up passwordless SSH login with SSH keys on Linux, macOS, and Windows, including hardening tips and troubleshooting.
What Is a Subnet? A Beginner's Guide to Subnetting
New to networking? Learn what a subnet is, how subnetting works, IP address classes, and why it matters for hosting and security.
Samba Server: How to Install and Configure on Ubuntu
Step-by-step guide to installing and configuring a Samba server on Ubuntu for cross-platform file sharing with Windows and Mac.
What Are the Well-Known Port Numbers?
Confused by TCP/UDP ports? Learn what well-known port numbers are, the port ranges, and a cheat sheet of common ports like 80, 443, and 22.
What Is Internet Protocol (IP)? A Beginner's Guide
New to networking? Learn what Internet Protocol (IP) is, how IP packets and headers work, and how IP routing moves data.
Benefits of IT Certifications
Why IT certifications are worth pursuing, what they cost, and where to find free training to prepare for exams like the CCNA.