Network Security

Network Security

When using a standalone computer security is fairly straight forward
1. Password, keyboard lock, screensaver etc
2. When part of a network it is more complex
Large Number of workstations gives greater risk of abuse, particularly if network can be remotely accessed
Illegal access to the network could be catastrophic for the company
Corporate security is required at appropriate level with a disciplinary procedure to back it up
Viruses and illegal software spread faster over a network especially if all machines have DVD drives, USB ports, internet access and email
Preserving Security
1. Physical Controls
  1. Limit access to equipment
  2. restrict unauthorised personnel
2. Software
  1. Restrict access to resources
  2. Assign read only access/ read/edit or read/ write/ delete/ edit
3. Username and Password
  1. Allocated so others cannot access their files
  2. Avoid use of obvious options
Protecting Networks against Illegal Access
1. Firewall
  1. Only authorised data passes in and out through it
  2. Stops access of incoming viruses
2. Data Encryption
  1. Scrambling or coding data
  2. Only visable to people authorised to see it and have the key
  3. Ensures data is useful to anyone unauthorised to see it

Resource summary

	Created by scott.dowle over 11 years ago