🌐 Understanding Network Basics & Security 🔐
📚 Network Definition: A network is a collection of interconnected devices that can communicate and share resources.
🖥️ Components:
- Nodes: Devices like computers, printers, and servers.
- Links: Connections between nodes, such as cables or wireless signals.
🔒 Network Security:
Definition: Measures and controls to protect the integrity, confidentiality, and availability of network data.
🛡️ Techniques:
- Firewalls: 🧱 Barriers that monitor and control incoming and outgoing network traffic.
- Encryption: 🔑 Scrambling data to make it unreadable without a decryption key.
- Intrusion Detection Systems (IDS): 🚨 Tools that detect unauthorized access or anomalies.
- Virtual Private Networks (VPNs): 🌍 Secure connections over public networks.