Network Security

Network Security

1. Firewall

   • Controls which programs can send and receive data packets.

2. Encryption

   • Scrambles your data to make it unreadable to others.
   • Cipher
     • This is a method of scrambling your data.
   • Key
     • This is the information which is needed for someone to unscramble ( or decrypt ) the data.
   • Decryption
     • This is when you unscramble the data using a key so that it can be understood

3. Passwords

   • Used to protect your data from UNAUTHORISED USERS.
   • Unauthorised Users
     • Users who are not allowed to access all or part of a computer system.

4. Physical Security

   • It is the protection of networks or program from physical circumstances which could cause a damage to the network.

5. User Access Levels

   • It is a part of an access for computer systems, which then allows a system administrator to set up a level of security.