Network Security

Network Security

1. Passwords

2. User Access Levels

3. Physical Security

   • Something physically preventing someone from getting into a network, e.g. Locks, scanners

4. Encryption

5. Firewall

   • A firewall controls wich programs have permission to send and receive data packets to and from a computer through 'ports'.
     • This prevents malware or other malicious programs from gaining access or sending information about the computer as they do not have permission so cannot send it.
   • Key words
     • Control
     • Data Packets
     • Send & Receive
     • Program
     • Permission
     • Ports

6. WAN, wide area network

7. LAN, Local Area Network

8. Node, any device connected to a network