1. More on the internet & the web Advantages & Disadvantages of the internet

2. Advantages

3. Disadvantages

4. Firewall A firewall is a security system that maintain a strong wall which makes sure that no one is able to access the files in your computer every time you are logged on to the internet.

5. Proxy server

6. The proxy server acts as a gatekeeper , filtering internet sites and deciding what files or messages should come in