Networking & Security
Networking fundamentals, DNS, SSL, firewalls, and server protection — from the basics to advanced security setups.
Linux Networking Linux Networking Explained: Interfaces, IP Addresses, Routes, and the Default Gateway A Linux server can have several network interfaces
An IP address identifies a network destination, but a server usually runs many networked applications at the same time. A web server, SSH service, database
When an application sends data across a network, it cannot assume that every packet will arrive intact, in order, or at all. IP can move packets between
When you type a domain name into a browser, you normally think about the website that appears. The network has to solve a different problem first: it needs
An IP address is one of the basic pieces of information that makes network communication possible. When a server sends a packet to another system, the
SSH keys are one of the safest and most practical ways to access a remote server. Instead of sending a reusable password, your computer proves that it
A server can have one IP address and still run a website, SSH, DNS, a database, and many other network services at the same time. How does incoming traffic
A server can have fast CPUs, plenty of RAM, NVMe storage, and a gigabit network connection — and still feel slow from another location. The missing piece
🌐 Networking & Security · Beginner Lesson You find two VPS plans. Both have 4 vCPU, 8 GB RAM, NVMe storage, and a 1 Gbps network port.
NETWORKING & SECURITY · LESSON You open a VPS pricing page and see three offers: 100 Mbps, 1 Gbps, and maybe even 10 Gbps. The natural reaction is