Network security 2

Network security 2

1. Physical security

   • First line of defence - preventing unauthorised people from entering buildings where network equipment is locked up
   • Keep access doors locked using keypads, fingerprint pads etc
   • Biometric security recognition can be used on mobile devices to authenticate users
   • Use swipe cards containing user's details to enter the building
   • Install closed circuit television to monitor interior and exterior of building
   • Install burglar alarms in all rooms
   • Fit radio frequency identification (RFID) chips to all equipment so an alarm will sound if the equipment is taken out of the building
   • Use chains and locks so equipment can't be stolen

2. Firewalls

   • Firewalls protect a network connected to a WAN such as the internet
   • They can be provided by hardware or software
   • They can be configured to prevent communications from entering the network
   • They can prevent programs and users from accessing the internet from within the network
   • Individual computers usually have a software firewall which have default rules installed onto them to protect the computer from common threats
   • A business with a LAN and a internet connection is likely to have a hardware based firewall because they have more flexibility in the rules that can be applied and data throughput is faster

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