WHAT DOES A FIREWALL DO ?

A utility program that prevents unauthorised access to computers or a LAN from the Internet and controls what sites computers on the LAN can access.

A program that secretly records the user’s actions on the computer including passwords and personal details they type when accessing a secure site.

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Open source, off-the-shelf software and firewalls

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1OPEN SOURCE SOFTWARE IS SOFTWARE THAT HAS A OPEN SOURCE AND CAN BE CHANGED AND APPLIED TO THE SOFTWARE
1. AVerdadero
2. BFalso
2IS OFF THE SHELF SOFTWARE, SOFTWARE THAT IS COPYRIGHTED AND THE LICENCE SOLD UNDER A PATENTED OR TRADE MARKETED NAME
1. AVerdadero
2. BFalso
3WHAT DOES A FIREWALL DO ?
1. AA utility program that prevents unauthorised access to computers or a LAN
  from the Internet and controls what sites computers on the LAN can access.
2. BA program that secretly records the user’s actions on the computer
  including passwords and personal details they type when accessing a
  secure site.