Network Security: Firewalls, Encryption and Passwords

Network Security

1. Firewall

   • Firewalls are used to stop data being sent out or received by the computer.
     • This is helpful because it stops data coming into your computer from another computer. You do not want people having full acess to your computer as they could see and use all your data. If we didn't have it everybody would be able to acess all of your data and basically hack your account.

2. Encryption

   • Encrytion is used to scramble data being sent over a network so that it can't be read unless you have the "key"
     • This is helpful because it stops people being able to read the data. If it is important data then it is vital that it encrypted. If we didn't have this then anyone could read your information that could be secret. For example if you were sending your bank details to someone important and it wasn't encryted anyone could read it.

3. Passwords

   • Passwords are used to stop another person from logging onto your account.
     • This is helpful because if you didn't have passwords on your account then anyone could log in and they could delete your data. For example it could be your homework or

4. Physical security

5. User access levels