Companies and organisations are increasingly using a range of alternative schemes/technologies to protect

their information systems and e-commerce facilities.

Such schemes/technologies include the use of:

n system firewalls,

n intrusion detection systems,

n data/information encryption facilities,

n digital certificates, and/or

n authentication and authorisation software.

Required

Describe each of the above schemes/technologies and explain how each of them assists in protecting a company’s/organisation’s information systems and e-commerce facilities.