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30/09/2025

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28/09/2025

What is a Server?
A server is a special computer that stores data and provides services (like websites, email, or files) to other computers called clients.

🖥️ Types of Server

⬛ Web Server
• Work: Runs websites.
• How:
– You type a website in your browser → Http Request goes to the server.
– Server sends back the page data → Http Response comes → The website shows on your screen.

⬛ Mail Server
• Work: Sends and receives emails.
• How:
– You send an email → Goes to the mail server through SMTP protocol.
– Another mail server receives it → Delivers to the receiver’s inbox.

⬛ DNS Server
• Work: Changes a website name into an IP address.
• How:
– You type example. com → DNS finds its IP Address (like 100. 101. 102. 103).
– Your browser then connects to the web server using that IP address.

⬛ Proxy Server
• Work: Acts as a gatekeeper between you and the internet.
• How:
– You first connect to the Proxy.
– Proxy sends your request to the internet or can block it.
– This gives more privacy and sometimes faster speed.

⬛ FTP Server
• Work: Upload or download large files.
• How:
– Connect using FTP software/browser.
– Easily transfer big files from one place to another.

⬛ Origin Server
• Work: The main server where real data is stored.
• How:
– When a visitor opens a website → First goes to Edge Server/CDN.
– If not found there, the original data comes from the Origin Server.

📌 Key Point
All servers are computers but each has a different job:
– Some give websites,
– Some run emails,
– Some change domain names to IPs,
– Some share files.

28/09/2025

Want to start your career in Networking & Cyber Security?
Good news! Here are 8 FREE certifications in 2025 that will help you learn from beginner to advanced 🔥

🔹 1. Cisco – Cisco Networking Academy
Learn the foundation of networking & security from the world leader.

🔹 2. Fortinet – NSE 1: Information Security Awareness
Understand how cyber threats work & how to stay safe.

🔹 3. Google Cloud – Networking Fundamentals
Get clear knowledge of cloud-based networking systems.

🔹 4. AWS – Cloud Security Fundamentals
Secure cloud environments & learn AWS basics.

🔹 5. Checkpoint – Cloud Security
Learn how to protect cloud platforms from hackers.

🔹 6. Juniper – Getting Started with Networking
Step-by-step guide for beginners in networking.

🔹 7. Open Networking – Networking Concepts & Fundamentals
Practical skills for real-world networking scenarios.

🔹 8. Splunk – Load Balancing Essentials
Understand traffic management & system performance.

💡 Why should you do these?
✔ Build a strong base in Networking & Cyber Security
✔ Globally recognized certifications
✔ Free resources = Zero investment, High value
✔ Adds weight to your CV & LinkedIn

👉 If you are a student, job seeker, or IT professional, these certifications are perfect for you in 2025.

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